Model Questions for practice in CHERM Grade 10 Technical Stream
Unit 1:
Introduction to Electronic Device
MCQ Based on Knowledge & Understanding
1.
Which of the following is considered matter?
A. Thoughts B.
Heat C. Water D. Light
2. Molecules
are made up of:
A. Only electrons B. Groups of atoms C. Only protons D. Only neutrons
3. Which
state of matter has a definite shape and volume?
A. Gas B.
Liquid C. Plasma D. Solid
4. Atoms are
composed of:
A. Electrons only B. Protons, electrons, neutrons
C. Only neutrons D. Only protons
5. KCL is
based on which law?
A. Conservation of energy B. Conservation of charge
C. Conservation of mass D.
Conservation of momentum
6. KVL
states that the algebraic sum of voltages in a closed loop is:
A. Equal to resistance B. Equal to current C. Zero D. Infinite
7. Pure
silicon is an example of:
A. Extrinsic semiconductor B. Insulator
C. Intrinsic semiconductor D. Superconductor
8. Majority
carriers in n-type semiconductors are:
A. Holes B.
Electrons C. Neutrons D. Photons
9. The PN
junction contact region without free charge carriers is called:
A. Impurity zone B. Neutral zone C.
Depletion region D. Voltage
region
10. Forward
bias means positive terminal connected to:
A. n-type B.
both sides C. p-type D. ground
11. The
smallest particle of an element that retains its properties is:
A. Molecule B.
Atom C. Electron D. Nucleus
12. The force
of attraction between molecules is called:
A. Magnetic force B.
Electrostatic force
C. Intermolecular force D. Nuclear force
13. A
semiconductor whose conductivity is controlled by adding impurities is called:
A. Intrinsic semiconductor B. Metallic conductor
C. Extrinsic semiconductor D. Superconductor
14. The
depletion region mainly contains:
A. Free electrons B. Free holes C. Ionized atoms D. Mobile charges
15. KCL deals
with:
A. Voltage B.
Resistance C. Current at a node D. Power in a circuit
MCQ Based
on Application-Based MCQs
16. A solid
turns into a liquid when temperature increases. This is because:
A. Intermolecular distance increases B. Molecules stop vibrating
C. Gravity decreases D.
Molecules become charged
17. A student
connects currents 3A entering and 2A leaving a node. According to KCL, the
remaining current must be:
A. 1 A entering B. 1 A leaving C. 5 A entering D. 5 A leaving
18. In a
circuit loop, if battery = 10V and drop = 6V & 4V, KVL is satisfied
because:
A. 10 = 6 + 4 B.
10 = 4 – 6 C. 10 = 6 × 4 D. 10 = 6 ÷ 4
19. Doping
silicon with boron creates a P-type semiconductor because:
A. It adds extra electrons B. It creates more holes
C. It decreases holes D. It
removes silicon atoms
20. When
voltage is applied across a semiconductor, electrons move:
A. To negative terminal B. Randomly C. Toward positive
terminal D. Nowhere
21. In
forward bias, current starts flowing mainly because:
A. Depletion region becomes wide B. Depletion region becomes thin
C. Holes stop moving D.
Electrons disappear
22. A PN
junction stops current under which condition?
A. Forward bias B. Zero bias C.
Reverse bias D. High temperature
23. A
material behaves like an insulator at 0K. This material is likely a:
A. Conductor B.
Intrinsic semiconductor C. Metal D. Alloy
24. If an
n-type semiconductor has many electrons, this is because the dopant is from:
A. Group II B.
Group III C. Group IV D. Group V
25. When
holes move from p-side to n-side, what current flows?
A. Drift B.
Diffusion C. Neutral D.
Random
26. A gas is
compressed at constant temperature. Its particles will:
A. Move faster B. Come closer C.
Stop moving D. Become solid
27. In a
node, if 8A enters and 3A + 2A leave, remaining current must:
A. 5 A enter B.
3 A enter C. 3 A leave D. 5 A leave
28. A diode
is used in a battery charger because:
A. It blocks AC in both directions B. It allows current in only one direction
C. It stores energy D.
It amplifies signals
29. A
thermistor in high temperature shows low resistance. This shows:
A. Negative temperature coefficient B. Positive temperature coefficient
C. Zero coefficient D.
No temperature effect
30. If a PN
junction diode is reverse biased, it can be used as:
A. Amplifier B.
Rectifier C. Switch (OFF state) D.
Battery
MCQ Based on Higher-Ability
31. If an
atom loses one electron during bonding, its charge becomes:
A. Neutral B.
Positive C. Negative D. Zero
32. When both
diffusion and drift currents become equal at a PN junction, the junction is in:
A. Breakdown B.
Reverse saturation C. Equilibrium D. Avalanche
33. An
intrinsic semiconductor’s conductivity increases with temperature because:
A. More electrons join the nucleus B. More electrons jump to conduction band
C. Holes disappear D.
Impurities increase
34. In a
circuit if KVL gives negative current, this means:
A. Current has no direction B. Current is wrong
C. Assumed direction was opposite D.
Battery is faulty
35. A
depletion layer forms because:
A. Carriers gather at the junction B. Carriers combine and vanish
C. Voltage is too low D.
Temperature is zero
36. Why does
an n-type semiconductor remain electrically neutral?
A. It loses electrons B. Every gained electron has a matching proton
C. Donor atoms become positively charged D.
Both B and C
37. In
reverse bias, current is extremely small because:
A. Only minority carriers cross the junction B. Only majority carriers
flow
C. Depletion layer disappears D.
Temperature drops instantly
38. A PN
junction diode conducts heavily after 0.7V in silicon because:
A. Intrinsic carriers vanish B.
Potential barrier completely breaks
C. Resistivity becomes infinite D.
Electrons freeze
39. If we
increase doping in an n-type semiconductor:
A. Majority carriers decrease B. Minority carriers increase
C. Conductivity increases D.
Resistance becomes infinite
40. A semiconductor device ideal for amplification is:
A. Resistor B.
Transistor C. Inductor D.
Capacitor
41. Increasing temperature in an intrinsic semiconductor will:
A. Increase ionization of atoms B. Reduce energy levels
C. Destroy covalent bonds D.
Make it a perfect insulator
42. When a diode is reverse biased heavily and suddenly breaks down, the
effect is called:
A. Forward conduction B. Zener effect C. Resistance drop D. Saturation
43. If a closed-loop voltage sum is not zero, this indicates:
A. Wrong polarity B. Measuring error C. Open circuit D. KVL is violated
44. For maximum diffusion current in a PN junction, the depletion region
should be:
A. Very wide B.
Very narrow C. Neutral D.
Infinite
45. A semiconductor behaves more like a conductor at high temperature
because:
A. Holes vanish B. Band gap decreases effectively
C. Lattice energy increases D. Charge
carriers decrease
|
ANSWER
KEY |
|||||||||||||||||
|
1 |
C |
6 |
C |
11 |
B |
16 |
B |
21 |
C |
26 |
D |
31 |
B |
36 |
D |
41 |
A |
|
2 |
B |
7 |
C |
12 |
C |
17 |
A |
22 |
B |
27 |
B |
32 |
C |
37 |
A |
42 |
B |
|
3 |
D |
8 |
B |
13 |
C |
18 |
B |
23 |
D |
28 |
B |
33 |
B |
38 |
B |
43 |
D |
|
4 |
B |
9 |
C |
14 |
C |
19 |
C |
24 |
B |
29 |
A |
34 |
C |
39 |
C |
44 |
B |
|
5 |
B |
10 |
C |
15 |
A |
20 |
B |
25 |
B |
30 |
C |
35 |
B |
40 |
B |
45 |
B |
Short Questions based on
Knowledge & Understanding
1.
What is meant by matter? Explain with two
examples.
2.
Define an atom. How is it different from a
molecule?
3.
What are intermolecular forces? Why are they
important?
4.
Describe the three states of matter based on
shape and volume.
5.
What is an intrinsic semiconductor? Give one
example.
6.
What is doping? Why is it done in
semiconductors?
7.
Explain what a depletion region is in a PN
junction.
8.
Write Kirchhoff’s Current Law (KCL) in your
own words.
9.
Write Kirchhoff’s Voltage Law (KVL) in your
own words.
10. What are
majority and minority carriers in a semiconductor?
Short Questions based on
Application-Based Questions
11. Why does
a solid melt when heated? Explain using molecular behavior.
12.
Apply KCL to explain what happens when more
current enters a node than leaves it.
13.
Use KVL to describe how we check if a loop in
a circuit is correct.
14.
Explain how a diode works in a mobile charger
circuit.
15.
Why does an n-type semiconductor conduct
better after adding donor impurities?
16.
Describe what happens to the depletion layer
when a diode is forward biased.
17.
Give a real-life example where reverse bias
is used and explain why.
18.
How does temperature affect the conductivity
of a semiconductor?
19.
Why is silicon preferred over germanium for
making electronic devices?
20.
Explain how a thermistor can be used as a
temperature sensor.
Short Questions based on Higher
Ability
21. Explain
why current direction in a circuit can appear negative in KVL calculations.
22.
Describe how equilibrium is established
inside a PN junction.
23.
Why does the conductivity of intrinsic
semiconductors increase rapidly with temperature?
24.
Explain the role of drift and diffusion
currents in a diode.
25.
Why does the depletion layer become very wide
during reverse bias?
26.
Discuss the difference between Zener
breakdown and avalanche breakdown.
27.
How does doping level affect the width of the
depletion region?
28.
Explain why semiconductors are neither
perfect insulators nor perfect conductors.
29.
How does the band gap determine the
electrical behavior of materials?
30.
Why is a transistor considered better than a
diode for amplification?
Long Questions based on
Knowledge & Understanding
31. Explain
in detail the meaning of matter. Describe how solids, liquids, and gases differ
in terms of molecular arrangement, movement, and force of attraction.
32.
Describe the structure of an atom with the
roles of electrons, protons, and neutrons. Draw a simple labelled diagram of an
atom.
33.
What are intermolecular forces? Explain how
these forces affect the states of matter with suitable examples.
34.
Compare the properties of solids, liquids,
and gases. Explain why gases are easily compressible while solids are not.
35.
Describe intrinsic and extrinsic
semiconductors. Explain how adding impurities changes electrical conductivity.
36.
Explain in detail what doping is. Describe
the process of making a p-type and n-type semiconductor with clear examples.
37.
What is a depletion region in a PN junction?
Explain how it is formed and why it plays an important role in diode operation.
38. State and
explain Kirchhoff’s Current Law (KCL). Provide an example of a simple circuit
showing how KCL is applied at a node.
39. State and
explain Kirchhoff’s Voltage Law (KVL). Use an example of a simple loop to show
how voltage distribution follows this law.
40.
Discuss the difference between majority and
minority charge carriers in semiconductors. Explain their role in conduction in
both p-type and n-type materials.
Long Questions based on Application-Based
41. Explain
why a solid changes into a liquid when heated. Describe the roles of
temperature, molecular motion, and intermolecular force.
42. Apply KCL
to a real-life circuit (such as a fan regulator or household wiring). Explain
how current distribution works at a junction.
43.
Use KVL to analyze a simple series circuit
with resistors and a battery. Explain how voltage drops across components
relate to the total supply.
44.
Explain how a diode works in a mobile charger
or adapter. Describe rectification and why current flows only in one direction.
45.
Describe how doping a semiconductor with
donor or acceptor atoms increases its conductivity. Provide examples of both.
46.
Explain the behavior of a PN junction diode
under forward bias. Describe how the depletion region changes and how current
begins to flow.
47.
Explain the behavior of a diode under reverse
bias. Use real-life applications like voltage protection or reverse polarity
protection.
48.
Describe how temperature affects the
performance of a semiconductor device. Provide practical examples such as
sensors and electronics heating.
49.
Explain why silicon is more commonly used
than germanium in electronic devices. Discuss factors like leakage current,
temperature stability, and availability.
50.
Describe how a thermistor works. Explain its
temperature-resistance relationship and how it is applied in devices like
thermostats or fire alarms.
Long Questions based on Higher
Ability
51. Explain
how both drift and diffusion currents exist in a PN junction. Describe how they
balance each other at equilibrium.
52.
When solving circuits using KVL, current may
come out as negative. Explain why this happens and what it means for the
assumed direction of current.
53.
Explain in detail why the conductivity of
intrinsic semiconductors increases sharply with temperature. Include concepts
of band gap and electron excitation.
54.
Describe how the depletion region changes
during forward bias and reverse bias. Explain what happens to electric field,
barrier potential, and charge movement.
55.
Discuss the difference between avalanche
breakdown and Zener breakdown in diodes. Explain when each type occurs and why
it happens.
56.
Explain how the level of doping affects the
width of the depletion layer, potential barrier, and conductivity of a
semiconductor.
57.
Describe why semiconductors are considered
intermediate between conductors and insulators. Explain using band theory and
energy gap concepts.
58.
Explain the role of the band gap in
determining whether a material will behave as a conductor, semiconductor, or
insulator. Provide examples.
59.
Discuss in detail how a transistor works as
an amplifier. Explain the role of the emitter, base, and collector along with
current gain.
60.
Explain how reverse saturation current flows
in a diode. Describe why this current is extremely small and how temperature
influences it.
Unit 2:
Introduction to Computer System
MCQ
Based on Knowledge & Understanding
1.
Which of the following is NOT one of the five
basic components of a computer system?
A. Input Unit B.
Control Unit C. Operating System D. Memory Unit
2.
The
device that converts human-readable data into machine-readable data is called:
A. Output unit B. Input unit C.
Printer D. Memory unit
3.
Which
type of memory is directly accessible by the CPU?
A. Secondary Memory B. Hard Disk C.
Primary Memory D. Flash Drive
4.
Which
component performs mathematical calculations in the CPU?
A. Control Unit B. ALU C. Output
Unit D. RAM
5.
ROM is
used mainly to store:
A. Photos B. Videos C. Boot instructions D.
Games
6.
Which
input device captures images from paper documents?
A. Keyboard B.
Scanner C. Mouse D. Monitor
7.
The
CPU is also known as the:
A. Heart of computer B. Brain of computer
C. Memory of computer D. Storage
of computer
8.
Which display technology uses electron beams
hitting a phosphor screen?
A. LCD B.
LED C. CRT D. Plasma
9.
Color
depth refers to:
A. Brightness of display B. Number of colors a pixel can show
C. Refresh rate D. Display size
10.
The refresh rate of a monitor is measured in:
A. Pixels B. Bytes C. Hertz D.
Bits
MCQ Based on Application-Based
MCQs
11.
If you move a mouse across a desk, what
happens on the screen?
A. Text appears B. The cursor moves
C. Computer shuts down D. Color
changes
12.
Which memory would a computer use while
running multiple programs at the same time?
A. ROM B. RAM C. DVD D.
USB
13.
A
student wants to convert a printed page to an editable text file. Which device
should they use?
A. Mouse B. Scanner C. Speaker D. Projector
14.
When
the CPU needs very fast access to frequently used data, it uses:
A. Registers B.
Hard Disk C. DVD D. USB drive
15.
If a
monitor flickers due to low refresh rate, what should be increased?
A. Resolution B.
Color depth C. Refresh rate D. Brightness
16.
To
store large movies and games permanently, which memory should be used?
A. RAM B.
ROM C. Secondary memory D. Cache memory
17.
If the
CPU cannot execute functions properly, which unit might be responsible for
issuing wrong signals?
A. Output unit B. Control unit C.
ALU D. Monitor
18.
LED
displays are commonly used in:
A. Printers B.
Traffic lights C. CD players D. Keyboards
19.
A user
wants to store photos digitally while traveling. Which input device will help?
A. Keyboard B.
Digital camera C. Scanner D. Joystick
20.
Which
display device is best suited for 3D gaming?
A. Plasma display B. CRT C.
3D Display D. DVST
MCQ Based on Higher
Ability
21.
Which
memory type is MOST crucial for speeding up CPU processing?
A. Cache memory B. ROM C.
Hard disk D. DVD
22.
Which
display method draws images using straight-line segments?
A. Raster scan B. Random scan C.
Shadow-mask D. DVST
23.
In a
shadow-mask CRT monitor, how many electron guns are used?
A. One B.
Two C. Three D. Four
24.
Which
technology provides the highest color accuracy due to RGB control for each
pixel?
A. Beam-penetration CRT B. LCD C. LED D.
Shadow-mask CRT
25.
What
happens if the refresh buffer (frame buffer) is damaged?
A. Keyboard stops working B.
Images cannot be displayed properly
C. CPU stops D.
RAM increases
26.
Which
display technology is MOST affected by loss of phosphor brightness over time?
A. LCD B.
Plasma C. LED D. 3D display
27.
Which
unit within the CPU interprets instructions and directs operations?
A. Memory Unit B. ALU C. Control
Unit D. Output Unit
28.
DVST
displays have a major disadvantage because:
A. They need refreshing B. They cannot erase
specific parts of the screen
C. They are too colorful D.
They are expensive
29.
A
computer with low resolution will display:
A. More pixels B.
Fewer pixels
C. Higher refresh rate D. Brighter images
30.
For
photorealistic images, which color depth is ideal?
A. 1-bit B.
8-bit C. 24-bit D. 4-bit
|
ANSWER KEY |
|||||||||||
|
1 |
C |
6 |
B |
11 |
B |
16 |
C |
21 |
A |
26 |
B |
|
2 |
B |
7 |
B |
12 |
B |
17 |
B |
22 |
B |
27 |
C |
|
3 |
C |
8 |
C |
13 |
B |
18 |
B |
23 |
C |
28 |
B |
|
4 |
B |
9 |
B |
14 |
A |
19 |
B |
24 |
D |
29 |
B |
|
5 |
C |
10 |
C |
15 |
C |
20 |
C |
25 |
C |
30 |
C |
Short Questions based on Knowledge
& Understanding
1.
What are the five basic components of a
computer system? Explain each in one or two lines.
2.
What is the main difference between primary
memory and secondary memory?
3.
Define ROM. Why is it called non-volatile
memory?
4.
What is the function of the ALU inside a CPU?
5.
Explain the purpose of the control unit in
simple words.
6.
What is an input device? Write any two
examples with their use.
7.
What is color depth? Why is it important for
display quality?
8.
What is refresh rate? How is it measured?
9.
What is meant by “pixel” on a display screen?
10.
Write a short note on CRT monitors.
Short Questions based on Application-Based
Questions
11. How does
a mouse help a user interact with the computer? Explain with an example.
12.
Why do computers need RAM to run applications
smoothly?
13.
A student wants to convert printed notes to
digital text. Which device should they use and why?
14.
How does a digital camera act as an input
device?
15.
Why is secondary memory important for
long-term storage?
16.
How does increasing the refresh rate reduce
monitor flickering?
17.
Explain how the CPU uses registers during
processing.
18.
Give an example of where LED displays are
used and explain why they are preferred.
19.
How does screen resolution affect the clarity
of an image?
20.
Why is LCD preferred over CRT for portable
devices like laptops?
Short Questions based on Higher Ability
21. Explain
why cache memory improves CPU performance.
22.
Distinguish between raster scan and random
scan displays.
23.
Why does a shadow-mask CRT use three electron
guns?
24.
How does the frame buffer (refresh buffer)
help create images on the screen?
25.
Why is plasma display not suitable for
long-term static images?
26.
Explain how the banding of RGB colors helps
create millions of colors on screen.
27.
Why does DVST display have problems erasing
individual lines or images?
28.
How does low resolution affect digital
graphics quality?
29.
Explain why a 24-bit color depth is important
for photorealistic images.
30.
Compare LCD and CRT in terms of power
consumption, clarity, and safety.
Long Questions based on Knowledge
& Understanding
31. Explain
the five basic components of a computer system in detail. Describe
the function of the input unit, output unit, memory unit, ALU, and control unit
with suitable examples.
32.
Describe primary memory and its types. Explain
the difference between RAM and ROM, and why each type is important for the
computer.
33.
Explain the structure and working of the CPU. Describe
the roles of ALU, Control Unit, and registers with an illustration or simple
diagram.
34.
What is secondary memory? Describe
different types of secondary storage devices and explain why they are needed
even when primary memory exists.
35.
Describe the working of any three input
devices in detail. Include how each device converts human input
into machine-readable form.
36.
What is a display device? Explain
pixels, resolution, color depth, and refresh rate. Describe how these factors
affect the quality of a screen.
37.
Explain the working principle of a CRT
monitor. Describe electron guns, phosphor coating, and how images
are formed on the screen.
38.
Describe the difference between RAM, ROM,
cache memory, and registers. Explain the importance of each memory type
in computer processing.
39.
What is color depth? Explain
how different bit depths (8-bit, 16-bit, 24-bit) represent colors and affect
image quality.
40.
Describe the characteristics of LCD displays. Explain
how liquid crystals work with backlighting to produce images.
Long Questions based on Application-Based
Questions
41. Explain
how the CPU, memory, and input/output devices work together when a user runs a
computer program. Give an example to support your answer.
42.
Discuss how RAM affects the performance of a
computer. Explain what happens when RAM is full and how it impacts
multitasking.
43.
Explain the real-life use of scanners,
digital cameras, and barcode readers. Describe how each device helps convert
physical data into digital form.
44.
Describe the use of registers and cache
memory during program execution. Explain how they speed up the processing of
instructions.
45.
Compare CRT and LCD displays in terms of
working principles, advantages, and disadvantages. Include
size, power use, clarity, and safety.
46.
Explain how resolution and refresh rate
affect the usability of monitors in gaming, designing, and regular work.
47.
Describe the application of LED displays in
daily life. Explain why LEDs are used in traffic lights, signboards,
and display panels.
48.
Explain how primary and secondary memory work
together when saving and opening files. Provide a practical
example.
49.
Explain how digital projectors work and
describe situations where they are used effectively (schools, meetings,
theatres).
50.
Describe how a graphics card processes images
before sending them to the monitor. Include concepts like frame buffer and pixel
rendering.
Long Questions based on Higher
Ability
51. Describe
the differences between raster scan and random scan displays. Explain
how each method draws images on the screen and where each type is used.
52.
Explain the internal working of a shadow-mask
CRT. Describe why three electron guns are needed and how RGB
color mixing works.
53.
Discuss how LCD technology solves the
problems found in CRT displays. Include comparisons of flicker, radiation,
sharpness, and energy use.
54.
Explain how plasma displays produce images. Describe
the role of ionized gases, pixels, and phosphors, and discuss limitations like
burn-in.
55.
Describe the function of a frame buffer
(refresh buffer). Explain how it stores image data and how it
helps create smooth animation on monitors.
56.
Explain how resolution, color depth, and
refresh rate combine to affect image sharpness and color quality. Give
real examples.
57.
Discuss in detail why DVST technology is not
suitable for modern graphic applications. Include factors like slow
refresh, no selective erase, and image blur.
58.
Explain how increasing color depth creates
more realistic and richer images. Compare 8-bit, 16-bit, and 24-bit color
representations.
59.
Describe why LCD and LED displays have
replaced CRT and plasma in most devices today. Consider
power use, image quality, portability, and durability.
60.
Discuss the importance of display technology
in modern fields such as gaming, animation, medicine, and education. Explain
how high-quality displays improve user experience.
Unit 3: Overview
on System’s Core
MCQs based on Knowledge & Understanding
1.
What
is BIOS?
A. A type of
operating system B. Firmware
stored on the motherboard
C. A type of RAM D.
A network device
2.
Who first coined the term BIOS?
A. Bill Gates B. Gary Kildall C. Steve Jobs D. John Atanasoff
3.
Which of the following is NOT a motherboard
manufacturer?
A. AMI B. Foxconn C.
Ricoh D. Motorola
4.
Which function checks hardware before booting?
A. Bootstrap
Loader B. CMOS Setup C. POST D.
Driver Loader
5.
What does UEFI stand for?
A. Universal
Electronic Firmware Interface B. Unified Extensible Firmware Interface
C. Unique Enhanced File Interface D.
Unified Equipment Function Interface
6.
Which motherboard form factor is the smallest?
A. ATX B.
Micro-ATX C. Mini-ITX D. E-ATX
7.
What does the transformer in a power supply
do?
A. Store data B.
Change voltage
C. Cool the
system D. Control boot process
8.
What is the main storage component inside an
HDD?
A. Laser B.
Platter C. Webcam D.
Capacitor
9.
Which file system is commonly used by Windows?
A. HFS+ B.
Ext4 C. NTFS D. FAT12
10.
What
does disk partitioning do?
A. Increases RAM B. Divides a drive into
logical sections
C. Installs the OS D.
Repairs hardware
11.
Which
unit of a computer is responsible for performing arithmetic operations?
A. Control Unit B.
Memory Unit C. ALU D. Output Unit
12.
What is the basic unit of a digital image
called?
A. Dot B. Raster C. Byte D.
Pixel
13.
Which memory is used to store data temporarily
while the computer is running?
A. RAM B. ROM C.
CD-ROM D. Flash Drive
14.
The three primary colors used in CRT monitors
are:
A. Red, Yellow,
Blue B.
Red, Green, Blue
C. Red, Blue, Black D.
Green, Blue, Yellow
15.
LCD stands for:
A. Light Crystal
Display B. Liquid
Clear Display
C. Liquid Crystal Display D. Light Color Display
MCQs based on Application
16.
A
computer fails POST and gives multiple beeps. What does this indicate?
A. The OS is
corrupted B.
A hardware component is faulty
C. RAM is full D. The computer is overheating
17.
You
want a very small PC for a smart home project. Which motherboard type should
you choose?
A. ATX B.
Micro-ATX C. Mini-ITX D. E-ATX
18.
A user needs a partition larger than 32 GB
using FAT32. What tool is recommended?
A. BIOS setup B.
Device Manager
C. MiniTool Partition Manager D.
Task Manager
19.
Your PC is shutting down automatically due to
heat. Which power supply part helps this problem?
A. Transformer B. Cooling system
C. Filter capacitors D. Connector
20.
If a motherboard has the CPU placed near the
expansion slots, what issue may occur?
A. Over-voltage B. Difficulty inserting long cards
C. RAM corruption D. Slow
performance
21.
You need a drive that works on Windows, Mac,
and Linux. Which file system should you use?
A. NTFS B.
HFS+ C. Ext4 D. FAT32
22.
A technician wants to ensure faster boot times
and large HDD support. Which firmware is best?
A. Legacy BIOS B.
POST C. UEFI D. CMOS
23.
A computer needs more PCI slots. Which form
factor is ideal?
A. Mini-ITX B. Micro-ATX C. ATX D. LPX
24.
You want to reinstall the OS but keep other
partitions. What should you perform?
A. Low-level
format B. High-level
format C. Partitioning D. BIOS reset
25.
You need to power a floppy drive. Which
connector is used?
A. Molex B.
P4 C. Berg D. Auxiliary
26.
What
happens when the resolution of a monitor is increased?
A. Icons become
smaller B. Icons become bigger
C. Screen becomes darker D. Display
becomes blurred
27.
A barcode reader is mainly used to:
A. Edit images B. Display
information
C. Scan printed codes D.
Print labels
28.
Which device converts physical documents into
digital form?
A. Projector B. Scanner C. Speaker D. LCD
monitor
29.
When RAM is insufficient, the computer becomes
slow because:
A. CPU stops
working B.
Monitor resolution reduces
C. Secondary memory is used instead D.
Input devices stop responding
30.
Graphics designers prefer high color depth
because it:
A. Reduces
sharpness B. Reduces clarity
C. Displays more colors D.
Increases file corruption
MCQs based on Higher-Ability / Critical
Thinking
31.
Why did ATX replace Baby AT?
A. To reduce
processor power B. To solve
expansion card clearance issues
C. To support floppy drives D.
To enable cloud computing
32.
Which improvement made UEFI more future-proof
than BIOS?
A. Uses magnetic
storage B.
Works without RAM
C. Supports large HDDs and secure boot D. Removes need for OS
33.
Why are outer tracks of HDD faster than inner
tracks?
A. Lower density B. Larger
circumference → more data per rotation
C. More magnetic coating D.
Wider sectors
34.
Why is low-level formatting not recommended
for users?
A. It installs
viruses B. It
permanently destroys data and reduces disk life
C. It breaks RAM D.
It disables BIOS
35.
Which motherboard type is most suitable for
high-end workstations requiring many GPUs?
A. Mini-ITX B. E-ATX C. Micro-ATX D. LPX
36.
Why do power supplies use rectifiers?
A. Convert AC to
DC B.
Store energy
C. Increase heat output D. Slow
down current
37.
Why is CMOS needed even when the PC is off?
A. It controls
display settings B.
It performs POST
C. It stores BIOS settings using battery power D.
It manages network settings
38.
What makes LPX and NLX obsolete today?
A. Too many expansions
slots B. Poor cooling and
upgradability
C. Heavy weight D.
Not compatible with USB
39.
Hard disk data is stored in binary using
magnetic spots. What ensures accuracy during rotation?
A. Platter
material B.
Read/write head precision and track alignment
C. Power supply voltage D.
BIOS configuration
40.
A
user wants maximum cross-platform access but needs large files over 4GB. Which
file system fits best?
A. FAT32 B.
NTFS C. HFS+ D. Ext2
41.
Raster
scan displays create images by:
A. Drawing only
outlines B. Scanning
the screen line by line
C. Flashing random dots D.
Using gas discharge
42.
Plasma displays create images using:
A. Ionized gas
cells B. Magnetic coils
C. Liquid crystals D. Electron
beams
43.
Which statement best explains color depth?
A. Number of
pixels displayed B. Number of
bits used to represent each color
C. Size of the image on the screen D.
Brightness of the screen
44.
OLED screens are better than LCD because they:
A. Use backlight B. Consume
more energy
C. Produce deeper blacks D. Need a projector
45.
Higher refresh rate helps in:
A. Reducing file
size B. Smoother motion on
screen
C. Sharper still images only D.
Decreasing pixel count
|
ANSWER KEY |
|||||||||||||||||
|
1 |
B |
6 |
C |
11 |
C |
16 |
B |
21 |
D |
26 |
A |
31 |
B |
36 |
A |
41 |
B |
|
2 |
B |
7 |
B |
12 |
D |
17 |
C |
22 |
C |
27 |
C |
32 |
C |
37 |
C |
42 |
A |
|
3 |
D |
8 |
B |
13 |
A |
18 |
C |
23 |
C |
28 |
B |
33 |
B |
38 |
B |
43 |
B |
|
4 |
C |
9 |
C |
14 |
B |
19 |
B |
24 |
B |
29 |
C |
34 |
B |
39 |
B |
44 |
C |
|
5 |
B |
10 |
B |
15 |
C |
20 |
B |
25 |
C |
30 |
C |
35 |
B |
40 |
B |
45 |
B |
Short Questions based on Knowledge &
Understanding
1.
What
are the five basic components of a computer system?
2.
Define
the input unit. What is its main function?
3.
How
does the input unit convert human-readable data into machine-readable data?
4.
What
is an output unit? Mention its main purpose.
5.
What
is the memory unit? What does it store?
6.
What
is the difference between primary memory and secondary memory?
7.
What
is RAM? List two characteristics of it.
8.
What
is ROM? Why is it called non-volatile memory?
9.
What
is cache memory?
10.
What
is the control unit and what does it manage?
11.
What
is the ALU? Mention any two tasks it performs.
12.
Define
a scanner. How does it convert images to digital form?
13.
What
is a digital camera? How is it different from an analog camera?
14.
What
is a display unit? List any three examples of display devices.
15.
What
is screen resolution? How is it expressed?
Short Questions based on Application-Based
16. Explain how a keyboard helps users enter text
and commands into a computer.
17.
How
does a mouse help in interacting with files and folders in a GUI environment?
18.
Describe
how a scanner could be used in offices or schools.
19.
How
does a digital camera convert light into pixel data?
20.
How
does RAM support multitasking in a computer?
21.
Give
one practical example where ROM is used during system startup.
22.
How
does cache memory help speed up computer performance?
23.
How
does the control unit help in executing instructions during program operation?
24.
How
does the ALU support calculations in accounting software?
25.
How
is a CRT monitor used as a display device in older computer systems?
26.
How
does the shadow-mask method help in displaying colored images on a screen?
27.
How
is an LED display useful in modern smartphones or televisions?
28.
Why
is LCD preferred in laptops and portable devices?
29.
Describe
how resolution affects the clarity of an image on a monitor.
30.
How
does refresh rate affect the viewing experience of fast-moving videos or games?
Short Questions based on Higher Ability
31. Why is the CPU referred to as the “brain of
the computer”?
32.
How
does the hierarchy of memory (registers, cache, RAM) impact system performance?
33.
Why
are registers considered the fastest type of memory?
34.
How
does raster scan technology work to display images on a CRT screen?
35.
How
is random scan display different from raster scan display?
36.
Explain
how the beam-penetration method produces different colors.
37.
Why
does the shadow-mask technique produce more realistic images than beam
penetration?
38.
How
does LCD technology use liquid crystals to modulate light?
39.
What
makes LEDs suitable for high-temperature applications?
40.
How
does a plasma display generate light using gas cells?
41.
Why
do DVST displays not require refreshing?
42.
What
limits DVST displays from being used for modern color graphics?
43.
How
does color depth influence the realism and file size of digital images?
44.
How
do refresh rate and screen flickering relate to each other?
45.
Why
do higher resolutions require more powerful video cards?
Long Questions based on Knowledge &
Understanding
46. Explain the five basic units of a computer
system with a neat diagram.
47.
Discuss
primary memory and secondary memory in detail. Explain their types and
differences.
48.
Describe
RAM and ROM. Explain their functions, characteristics, and importance in a
computer system.
49.
Explain
the functions of the CPU. Describe the roles of the ALU and Control Unit with
examples.
50.
What
is the memory unit? Explain cache memory, registers, RAM, and ROM with proper
descriptions.
51.
Define
input devices. Describe any five input devices and explain how they work.
52.
Define
output devices. Describe any five output devices and explain their uses.
53.
What
is a display unit? Explain CRT and LCD in detail with diagrams.
54.
Explain
the terms pixel, resolution, color depth, and refresh rate with suitable
examples.
55.
Describe
in detail how a scanner works. Explain its types and applications.
56.
Discuss
the different types of ROM and their uses.
57.
Explain
the concept of booting and the role of ROM in the booting process.
58.
Describe
the characteristics and uses of primary memory in a computer system.
59.
Explain
secondary storage devices. Describe any four with examples.
60.
What
is an ALU? Explain how arithmetic and logical operations are processed in a
computer.
Long Questions based on Application-Based
61. Explain how a keyboard, mouse, and scanner
are used together to complete tasks in an office environment.
62.
Describe
how the CPU, RAM, and storage devices work together when opening and editing a
document.
63.
Explain
the working process of a digital camera. Discuss how images are captured,
stored, and transferred.
64.
How
does RAM affect multitasking? Explain using examples of software usage.
65.
Describe
how resolution and color depth influence the quality of digital images. Give
real-life examples.
66.
Explain
how different display devices (CRT, LCD, LED) are used in education, business,
and entertainment.
67.
Describe
how the control unit manages the flow of data during program execution. Give a
practical example.
68.
Explain
how a scanner and OCR software can be used to digitize printed documents.
69.
Describe
the application of barcode readers in supermarkets. Explain the steps involved
in the billing process.
70.
Explain
how a projector works and discuss its uses in classrooms and meetings.
71.
How
does cache memory improve the performance of a computer? Explain with a real
example.
72.
Describe
the role of display resolution and refresh rate while watching high-speed
videos or playing games.
73.
Explain
how a graphics card helps in rendering images, animations, and videos.
74.
Describe
how different output devices (printer, monitor, speakers) help users interact
with computer results.
75.
Explain
the step-by-step process of how a computer converts user input into meaningful
output.
Long Questions based on Higher Ability
76. Compare raster scan and random scan displays
in terms of working principle, image quality, and applications.
77.
Explain
the beam-penetration technique and shadow-mask technique in detail with
diagrams.
78.
Describe
how LCD technology works. Explain the roles of backlight, liquid crystals, and
color filters.
79.
Explain
how LED displays are different from LCD displays. Discuss advantages,
limitations, and uses.
80.
Describe
the structure and working principle of plasma displays.
81.
Explain
the memory hierarchy (registers, cache, RAM, secondary storage). Discuss how it
affects system performance.
82.
Explain
how higher refresh rates reduce flickering and improve user experience. Include
examples from gaming or video playback.
83.
Describe
how color depth affects image realism. Include the relationship between bits
per pixel and number of colors.
84.
Explain
why CRT monitors consume more power and produce more heat than LCD or LED
screens.
85.
Discuss
the limitations of DVST displays. Why are they not suitable for modern color
graphics?
86.
Explain
how a display system converts electrical signals into images on the screen.
87.
Describe
in detail how pixels, resolution, and aspect ratio combine to form high-quality
digital images.
88.
Explain
the working mechanism of a graphics pipeline used in modern display systems.
89.
Discuss
how technological advancements have improved display devices from CRT to OLED.
90.
Compare
LCD, LED, and plasma technologies based on working principle, image quality,
energy consumption, and usage.
Unit 4:
Troubleshooting techniques
MCQs
based on Knowledge &
Understanding
1.
What
is troubleshooting?
a) Playing games on a computer b)
Identifying and fixing problems
c) Installing software d)
Buying new hardware
2.
What
should be checked first during troubleshooting?
a) The most advanced settings b)
The motherboard
c) The most general possible problems d)
Windows registry
3.
Which
of the following is part of hardware troubleshooting?
a) Editing a Word file b)
Updating social media
c) Removing or replacing faulty RAM d)
Changing wallpaper
4.
Cleaning
dust from ports and fans helps to:
a) Increase internet speed b) Prevent
overheating and hardware failure
c) Install new software d)
Change display size
5.
What
does POST stand for?
a) Power of System Test b)
Power-On Self-Test
c) Program Output Start Time d) Primary Operating System Test
6.
The
BIOS is responsible for:
a) Installing games b)
Running antivirus scans
c) Starting the boot process d)
Increasing RAM
7.
Which
step is recommended when starting troubleshooting?
a) Delete system files b) Write down
your steps
c) Change all cables d) Replace the
hard disk
8.
What
should you do if you receive an error message?
a) Ignore it b) Write
it down carefully
c) Restart router d) Format the computer
9.
Restarting
the computer solves many issues because:
a) It upgrades RAM b) It
resets basic system functions
c) It cleans the CPU fan d) It
replaces drivers automatically
10.
The
PreBoot phase involves:
a) Installing drivers b)
POST and reading the MBR
c) Opening Microsoft Word d) Updating BIOS
11.
What
loads the Windows OS Loader?
a) Device Manager b)
Notepad
c) Windows Boot Manager d) Disk Cleanup
12.
Which
file does the OS loader run?
a) explorer.exe b) winload.exe c)
bootmgfw.efi d) cmd.exe
13.
A
BIOS ROM checksum error means:
a) Keyboard is unplugged b) BIOS data
is corrupted
c) Screen brightness is low d) Printer
is out of ink
14.
CMOS
battery failure results in:
a) No sound b)
Internet not working
c) Date and time reset errors d) Blue desktop background
15.
What
does Disk Cleanup do?
a) Installs antivirus b)
Deletes the OS
c) Removes unnecessary files d)
Formats the computer
MCQs
based on Application-Based
16.
If
a computer is slow, what should you try first?
a) Remove CPU b) Restart the computer
c) Replace the monitor d) Change password
17.
If
a monitor is not working, what is the easiest first step?
a) Format the PC b)
Check the cables
c) Install a printer d)
Replace CPU
18.
If
RAM is faulty, what should a technician do?
a) Update Chrome Browser b)
Remove/replace the faulty RAM
c) Increase brightness d)
Install games
19.
When
your PC repeatedly boots to recovery options, the solution is to:
a) Delete Windows b)
Remove the graphics card
c) Disable recovery loop using BCDEdit d) Clean the keyboard
20.
If
Bootmgr is missing, which tool can help repair it?
a) Paint b) Calculator c) Startup Repair d) Snipping Tool
21.
If
the system is stuck at BIOS phase, what helps identify the issue?
a) Watching movies b) Pressing NumLock to check
response
c) Installing fonts d)
Opening MS Word
22.
A
blinking cursor on a black screen usually means:
a) Keyboard not working b)
Boot loader problem
c) Screen brightness issue d) Low RAM
23.
To
repair boot code, which command is used?
a) chkdsk /s b) regedit c) BOOTREC /FIXMBR d) ipconfig
24.
If
the system hive is corrupt, one method is to:
a) Change wallpaper b)
Install Photoshop
c) Restore registry from RegBack folder d)
Upgrade the keyboard
25.
Which
tool fixes corrupted Windows system files?
a) Defragmenter b) Disk Cleanup c) SFC /scannow d) Task Manager
26.
If
the OS is not found, it may be because:
a) Desktop icons are large b) The
boot device is not set correctly
c) USB cable is dirty d)
Wallpaper is blue
27.
A
bad CMOS battery requires:
a) Changing antivirus b)
Updating Word
c) Replacing the battery and resetting date/time d) Removing the GPU
28.
If
a hard disk fails, what should be checked first?
a) Printer ink b) HDD
cable connection
c) Game settings d) Screen color
29.
If
the computer has many startup programs, it may:
a) Increase performance b)
Slow down boot time
c) Improve cooling d)
Increase screen brightness
30.
To
free up disk space, a user can:
a) Install more games b) Uninstall
unnecessary programs
c) Increase font size d) Change
keyboard layout
MCQs
based on Higher Ability
31.
If
the Boot Configuration Data is corrupted, what might happen?
a) Screen becomes colorful b) System fails to load Windows
c) Keyboard types slowly d)
Printer jams
32.
If
the kernel phase fails, you may see:
a) A blue wallpaper b)
Normal login screen
c) Stop error or spinning dots d)
Desktop icons disappear only
33.
Which
tool generates Srttrail.txt?
a) Disk Cleanup b) Startup Repair c)
Registry Editor d) Wordpad
34.
If
third-party drivers cause boot failure, an advanced user should:
a) Shutdown Wi-Fi b)
Change desktop theme
c) Remove upper/lower filters in registry d)
Install games
35.
What
does chkdsk /f /r do?
a) Deletes apps b) Fixes disk
errors and bad sectors
c) Installs Windows d) Changes BIOS
36.
A
corrupted system hive often results in:
a) Screen brightness issues b) Failure
of Windows to load properly
c) Faster performance d)
Higher volume
37.
If
the OS shows inaccessible boot device error, the issue may be:
a) Too many icons b)
Faulty boot drivers
c) Wallpaper issue d)
USB unplugged
38.
Reinstalling
Windows is useful when:
a) Computer is brand new b) You want
a new desktop theme
c) System is slow for years and has many issues d) You lost your Wi-Fi password
39.
Disk
defragmentation helps because it:
a) Installs antivirus b)
Removes registry entries
c) Organizes scattered data on hard disk d)
Formats HDD
40.
A
clean boot helps identify:
a) Slow internet b) Problematic services or software
c) Dust in CPU d) Screen color mismatch
41.
If
pending.xml causes boot issues, the fix is:
a) Delete all drivers b) Rename
pending.xml and remove registry value
c) Install Chrome d) Change
motherboard
42.
Checking
NumLock during boot identifies:
a) Printer problems b) BIOS freeze
issues
c) GPU issues d) Audio
problems
43.
DISM
/remove-package is used to:
a) Create shortcuts b)
Delete folders
c) Uninstall problematic Windows updates d)
Change boot logo
44.
To
fix Stop error related to corrupted drivers, you can:
a) Increase brightness b)
Delete MS Office
c) Disable faulty drivers using registry hive d) Change speaker volume
45.
A
system that repeatedly enters recovery may require:
a) Restarting Netflix b)
Disabling recoveryenabled using BCDEdit
c) Changing password d)
Replacing the screen
|
ANSWER KEY |
|||||||||||||||||
|
1 |
B |
6 |
C |
11 |
C |
16 |
B |
21 |
B |
26 |
B |
31 |
B |
36 |
B |
41 |
B |
|
2 |
C |
7 |
B |
12 |
B |
17 |
B |
22 |
B |
27 |
C |
32 |
C |
37 |
B |
42 |
B |
|
3 |
C |
8 |
B |
13 |
B |
18 |
B |
23 |
C |
28 |
B |
33 |
B |
38 |
C |
43 |
C |
|
4 |
B |
9 |
B |
14 |
C |
19 |
C |
24 |
C |
29 |
B |
34 |
C |
39 |
C |
44 |
C |
|
5 |
B |
10 |
B |
15 |
C |
20 |
C |
25 |
C |
30 |
B |
35 |
B |
40 |
B |
45 |
B |
Short Questions based on Knowledge &
Understanding
1.
Define
troubleshooting.
2.
What
is the main purpose of hardware troubleshooting?
3.
Name
two processes involved in hardware troubleshooting.
4.
What
does POST stand for in computer booting?
5.
Which
part of the computer is responsible for running POST?
6.
What
is the first step to take when starting troubleshooting?
7.
Why
is it important to write down steps during troubleshooting?
8.
Name
one common BIOS error message.
9.
What
does the Disk Cleanup tool do?
10.
What
does the System File Checker (SFC) tool do?
11.
What
does the PreBoot phase check?
12.
Which
file is loaded by the Windows OS Loader?
13.
Give
one example of a system slow down cause.
14.
What
is the role of the Windows Boot Manager?
15.
Mention
one symptom of a kernel phase boot problem.
Short Questions based on Application
16.
What
should you check first if a monitor is not displaying anything?
17.
How
can you fix a faulty RAM module?
18.
What
is the first step if your computer repeatedly enters recovery mode?
19.
Which
command repairs the master boot record (MBR)?
20.
How
would you fix a missing Bootmgr file?
21.
What
steps should you take if a hard disk shows failure?
22.
How
can you free up hard disk space to improve system speed?
23.
What
action helps resolve slow system performance due to many running programs?
24.
How
would you fix a corrupted system hive in Windows?
25.
How
can Safe Mode help troubleshoot kernel phase problems?
26.
Which
method helps identify faulty services affecting startup?
27.
What
command can uninstall a pending Windows update?
28.
How
can you check for bad sectors on a hard disk?
29.
How
can disabling unnecessary startup programs improve system performance?
30.
What
should you do if a CMOS battery fails?
Short Questions based on Higher Ability
31.
What
are possible causes of the “Operating System not found” error?
32.
How
do you identify if a system is stuck in the BIOS phase?
33.
Which
tools can help repair boot code errors?
34.
How
would you fix BCD-related errors?
35.
Describe
the steps to replace a corrupted Bootmgr file.
36.
How
can you restore Windows registry from RegBack?
37.
What
is the difference between Safe Mode and Last Known Good Configuration?
38.
How
do you troubleshoot a Stop error caused by third-party drivers?
39.
Which
command fixes both file system errors and bad sectors?
40.
What
are the symptoms of a kernel phase boot failure?
41.
How
does a clean boot help identify startup problems?
42.
Why
is it important to back up your system before advanced troubleshooting?
43.
How
can disk defragmentation improve computer performance?
44.
How
do you recover a system after pending.xml causes boot failure?
45.
Why
might reinstalling Windows be necessary after long-term use?
Long Questions based on Knowledge &
Understanding
46.
Explain
the meaning of troubleshooting and describe the difference between hardware and
software troubleshooting with examples.
47.
Describe
the general steps of computer troubleshooting and explain why writing down
steps is important.
48.
Explain
the role of BIOS in the booting process and list the possible phases where a
boot problem may occur.
49.
Define
system slowdowns and list five possible causes of a slow computer.
50.
Explain
what a kernel phase boot problem is and mention at least three symptoms that
indicate it.
Long Questions based on Application-Based
46.
A
computer fails to boot and shows a black screen with a blinking cursor. Explain
step by step how you would troubleshoot this problem.
47.
Your
hard disk shows failure and the system is not responding. Describe the process
to identify and fix the problem.
48.
A
user reports their computer is running very slowly. Explain at least five steps
you can take to improve the system’s performance.
49.
Explain
how you would use Safe Mode, Last Known Good Configuration, and Clean Boot to
troubleshoot a Windows boot problem.
50.
A
computer repeatedly boots into recovery mode. Explain the commands and steps
you would use to resolve this issue.
Long Questions based on Higher Ability
51.
Discuss
how to troubleshoot a computer that shows a “Stop error” (e.g.,
INACCESSIBLE_BOOT_DEVICE) during startup, including driver and registry
troubleshooting steps.
52.
Explain
the methods to repair boot codes and BCD errors, including the commands used in
each step.
53.
A
Windows 10 system is slow and unresponsive, and running SFC or Disk Cleanup
does not help. Describe advanced steps to optimize performance without
reinstalling Windows.
54.
Discuss
the process of replacing a corrupted Bootmgr file and restoring the system
registry using RegBack or system restore points.
55.
Explain
in detail the process of troubleshooting a computer that is stuck in the kernel
phase, including the use of Event Viewer, Safe Mode, and recovery tools.
Unit 5: Repair and Maintenance
MCQs based on Knowledge & Understanding
1.
What
is the main purpose of preventive maintenance?
a) Repair broken equipment b) Prevent
equipment failure
c) Upgrade software d)
Increase internet speed
2.
Which
of the following is NOT part of preventive maintenance?
a) Cleaning equipment b)
Lubrication
c) Overclocking CPU d) Replacing worn-out parts
3.
Preventive
maintenance helps in:
a) Increasing system downtime b)
Reducing maintenance costs
c) Breaking hardware d)
Increasing malware infections
4.
Wireless
network problems can be caused by:
a) Dust buildup b)
Interference from other devices
c) Proper cable connection d) Low
monitor resolution
5.
Which
step is recommended first when fixing wireless connection issues?
a) Update drivers b)
Restart devices
c) Change IP address d) Replace the
router
6.
Proper
installation of power equipment ensures:
a) Increased heat b)
Reduced lifespan
c) Reliable operation d) Slower CPU
7.
Which
maintenance action protects power devices from failure?
a) Using a higher voltage than required b)
Cleaning and inspecting equipment
c) Overclocking the CPU d)
Turning off antivirus
8.
What
causes video card failure?
a) Overheating b) Good airflow c) Clean cables d) Latest drivers
9.
Image
quality problems in monitors can occur due to:
a) Dust and dirt b) Proper
resolution settings
c) Updated drivers d)
Good ventilation
10.
Input/output
device connection issues can arise from:
a) Loose cables b) CPU cooling c) Virus protection d) Proper Wi-Fi password
11.
Lower
processor voltage results in:
a) Higher power consumption b)
Lower battery life
c) Lower power consumption d)
Overheating
12.
Which
cooling method involves circulating liquid to transfer heat?
a) Heat sink b) Fan c) Liquid cooling d)
Passive cooling
13.
Which
was the first experimental self-replicating virus?
a) Brain b) Morris c) Creeper system d) Elk Cloner
14.
Spyware
is a virus type that:
a) Deletes files b) Steals
data from your device
c) Slows CPU d) Overheats
hardware
15.
Windows
Defender is used for:
a) Cooling CPU b) Virus
detection and protection
c) Updating drivers d)
Cleaning monitors
MCQs based on Application
16. What should you do first when your computer
cannot connect to Wi-Fi?
a) Restart devices b)
Buy a new router
c) Replace wireless card d)
Change monitor
17.
How
can you prevent video card overheating?
a) Use additional cooling b)
Update the monitor
c) Change USB port d)
Increase voltage
18.
If
monitor image quality is blurry, you should:
a) Check resolution settings b)
Reinstall Windows
c) Restart CPU d)
Upgrade power supply
19.
To
fix input/output device issues, you should:
a) Check cables b) Overclock
CPU c) Change video card d) Reduce voltage
20.
Overclocking
a processor without proper cooling may cause:
a) Higher speed only b) Damage or
overheating
c) Virus protection d)
Improved network signal
21.
If
wireless network is still unstable after restarting devices, you should:
a) Update wireless driver b)
Replace power supply
c) Clean monitor d)
Reinstall antivirus
22.
What
is the correct method to maintain UPS batteries?
a) Never test b)
Regular testing and load check
c) Disconnect completely d)
Overclock CPU
23.
Dust
on a video card may cause:
a) Improved performance b)
Overheating
c) Lower resolution d)
Faster Wi-Fi
24.
What
action helps maintain image quality on monitors?
a) Clean monitor regularly b)
Overclock GPU
c) Increase voltage d)
Disable antivirus
25.
If
a USB device is not detected, you can:
a) Try a different port b)
Change Wi-Fi password
c) Update monitor resolution d) Reinstall
CPU
26.
Which
processor voltage setting is safest for mobile systems?
a) Highest available b)
Lowest suitable
c) Medium for desktop only d) Ignore
voltage
27.
Which
cooling method uses no fan?
a) Passive cooling b)
Liquid cooling c) Heat pipe d) Fan cooling
28.
The
first MS-DOS virus was:
a) Brain b) Morris c) Creeper d) Rabbit
29.
To
prevent ransomware, you should:
a) Back up files regularly b)
Overclock CPU
c) Remove video card d)
Increase Wi-Fi signal
30.
Which
action is important for network security?
a) Use WPA/WPA2 encryption b)
Share SSID publicly
c) Disable antivirus d)
Clean power supply
MCQs based on Higher Ability
31. Which method best ensures long-term power
protection?
a) Inspect and replace damaged components regularly
b) Ignore UPS maintenance c) Overclock
CPU d) Remove surge protectors
32.
A
video card shows artifacts on screen. First action should be:
a) Check airflow and clean dust b)
Change power supply
c) Reinstall antivirus d)
Restart Wi-Fi
33.
Which
cooling method is similar to a refrigerator?
a) Heat sink b)
Phase-change cooling c) Fan d) Thermal pad
34.
If
a CPU is overheating under load, you should:
a) Add or improve cooling b) Remove
thermal paste
c) Disconnect monitor d)
Reinstall USB drivers
35.
Trojan
horse viruses:
a) Erase files automatically b) Hide
in harmless programs to steal data
c) Overheat CPU d)
Slow network
36.
If
an input device is not working, and changing ports fails, you should:
a) Try a different device b)
Overclock processor
c) Clean monitor d)
Update Wi-Fi
37.
Phase-change
cooling works by:
a) Circulating liquid only b)
Converting gas to liquid and back
c) Using heat sink only d)
Slowing CPU
38.
A
virus that affects Apple devices in early years was:
a) Brain b) Elk Cloner c) Creeper d) Morris
39.
How
should antivirus scans be scheduled?
a) Run once a year b)
Run regularly, preferably when computer is idle
c) Only when virus suspected d)
Never
40.
Lower
processor voltage affects battery life by:
a) Reducing efficiency b)
Increasing power consumption
c) Extending battery life d)
Causing failure
41.
Worms
spread by:
a) Overheating CPU b) Transferring
infected files
c) Cleaning monitor d) Updating
drivers
42.
Which
method is essential to prevent identity theft online?
a) Use strong, unique passwords b)
Disable Wi-Fi
c) Disconnect power supply d)
Overclock CPU
43. The first widely spreading internet virus was:
a) Creeper b) Morris c) Brain d)
Rabbit
44. Ransomware primarily:
a) Steals data b) Blocks
devices until ransom is paid
c) Overheats CPU d)
Disables Wi-Fi
45. Best way to protect personal files from virus damage is:
a) Back up files in multiple locations b)
Disable antivirus
c) Clean monitor daily d)
Use unsecured Wi-Fi
|
ANSWER KEY |
|||||||||||||||||
|
1 |
B |
6 |
C |
11 |
C |
16 |
A |
21 |
A |
26 |
B |
31 |
A |
36 |
A |
41 |
B |
|
2 |
C |
7 |
B |
12 |
C |
17 |
A |
22 |
B |
27 |
A |
32 |
A |
37 |
B |
42 |
A |
|
3 |
B |
8 |
A |
13 |
C |
18 |
A |
23 |
B |
28 |
A |
33 |
B |
38 |
B |
43 |
B |
|
4 |
B |
9 |
A |
14 |
B |
19 |
A |
24 |
A |
29 |
A |
34 |
A |
39 |
B |
44 |
B |
|
5 |
B |
10 |
A |
15 |
B |
20 |
B |
25 |
A |
30 |
A |
35 |
B |
40 |
C |
45 |
A |
Short Questions based on Knowledge &
Understanding
1.
What is
preventive maintenance?
2.
Name one goal of
preventive maintenance.
3.
Give one example
of preventive maintenance activity.
4.
Why is
preventive maintenance important?
5.
What can cause
wireless network connection issues?
6.
Name one step to
fix a weak Wi-Fi signal.
7.
Why should power
sources be inspected regularly?
8.
Give one method
to protect power devices.
9.
What can cause a
video card to fail?
10. How can overheating of a video card be prevented?
11. Name one reason for poor monitor image quality.
12. What is an example of an input device connection problem?
13. Why is lower processor voltage beneficial?
14. Name one CPU cooling method.
15. What is the first computer virus called?
Short Questions based on Application
16.
What
would you do first if Wi-Fi stops working?
17.
How
can you maintain a video card’s lifespan?
18.
What
should you check if a monitor shows blurry images?
19.
How
can input/output device connection issues be solved?
20.
What
happens if you overclock a CPU without cooling?
21.
Which
action helps fix persistent wireless network issues?
22.
How
should UPS batteries be maintained?
23.
What
is the effect of dust on a video card?
24.
How
do you improve monitor image quality?
25.
If
a USB device is not detected, what can you try?
26.
How
do mobile processors benefit from lower voltage?
27.
Which
cooling method uses no fans?
28.
Which
virus targeted MS-DOS computers first?
29.
How
can ransomware be prevented?
30.
Name
one way to secure a Wi-Fi network.
Short Questions based on Higher Ability
31.
How
can you ensure long-term power protection?
32.
What
should you do if a video card shows graphical artifacts?
33.
Name
a CPU cooling method similar to a refrigerator.
34.
What
should you do if a CPU overheats under load?
35.
How
do Trojan horse viruses work?
36.
If
changing USB ports does not fix a device, what next?
37.
How
does phase-change cooling work?
38.
Name
an early virus that affected Apple devices.
39.
When
should antivirus scans ideally run?
40.
How
does lower processor voltage affect battery life?
41.
How
do worms spread?
42.
How
can identity theft be prevented online?
43.
Which
virus was the first to spread widely on the internet?
44.
What
is the main effect of ransomware?
45.
What
is the best way to protect personal files from viruses?
Long Questions based on Knowledge &
Understanding
46. Explain the concept of preventive maintenance
and its importance in maintaining system performance.
47.
Discuss
the goals of preventive maintenance and how it helps in reducing costs and
downtime.
48.
Describe
the steps involved in troubleshooting and fixing wireless network connection
issues.
49.
Explain
the importance of power source and power protection maintenance and the key
practices involved.
50.
Discuss
common causes of video card failure and the preventive measures to ensure its
proper operation.
51.
Explain
the possible causes of image quality problems on monitors and how to maintain
optimal display quality.
52.
Describe
the common input and output device connection issues and their solutions.
53.
Explain
the significance of processor voltage levels and how modern processors benefit
from lower voltages.
54.
Discuss
the various CPU cooling methods and their importance in system stability and
performance.
55.
Explain
the concept of computer viruses and describe the first known computer virus.
Long Questions based on Application
56. A company reports frequent Wi-Fi
disconnections. Outline the step-by-step process to troubleshoot and fix these
network issues.
57.
A
video card in a desktop computer is overheating. Describe the measures you
would take to prevent failure and ensure optimal performance.
58.
A
monitor is displaying blurry images and incorrect resolution. Explain the steps
to identify and fix the issue.
59.
A
USB printer is not working on a system. Describe how you would check and
resolve the input/output device connection problems.
60.
Explain
how you would maintain UPS and other power protection devices to ensure
continuous operation during power failures.
61.
A
mobile processor uses lower voltage than a desktop processor. Discuss how this
affects power consumption and battery life.
62.
Describe
how thermal paste and heat sinks help in maintaining CPU temperature and system
stability.
63.
Your
computer is infected with a virus. Explain the steps you would take to detect,
remove, and prevent future infections.
64.
Explain
how social engineering can compromise system security and the precautions to
prevent it.
65.
You
are installing a new processor on an older motherboard without automatic
voltage setting. Explain how you would ensure the correct voltage
configuration.
Long Questions based on Higher Ability
66. Compare and contrast the different types of
computer viruses and malware, including their methods of infection and effects
on systems.
67.
Discuss
the advantages and disadvantages of different CPU cooling methods, including
heat sinks, fans, liquid cooling, and phase-change cooling.
68.
Analyze
the impact of improper video card maintenance on system performance and
describe a comprehensive maintenance plan.
69.
Evaluate
the effects of power failures on computer systems and describe a complete
preventive maintenance strategy for power sources and UPS systems.
70.
Explain
the significance of processor voltage regulation in system performance and
longevity, providing examples of single-plane and dual-plane processors.
71.
Discuss
how network security practices, such as WPA encryption and secure passwords,
prevent unauthorized access and virus infections.
72.
Evaluate
different strategies for virus protection and prevention, considering both
software solutions and user behavior.
73.
Discuss
the long-term effects of running a system with overheating CPUs or improperly
cooled components, including potential failures and data loss.
74.
Analyze
the causes of poor monitor display quality and propose a maintenance plan to
ensure optimal visual performance.
75.
Explain
the role of antivirus updates, backups, and secure browsing habits in
maintaining overall system security and performance.
MCQs based on Knowledge & Understanding
1.
What is the main
purpose of data backup?
A. To increase
computer speed B. To create copies
of data for protection
C. To delete old files D.
To install software
2.
Which backup
method copies ALL data every time?
A. Incremental
backup B. Differential backup
C. Full backup D.
Random backup
3.
What is a major
disadvantage of full backups?
A. They require
very small storage B. They
are very fast
C. They require more storage and time D.
They cannot restore files
4.
Which backup
method copies only the data changed since the LAST BACKUP of any kind?
A. Full B. Incremental C. Differential D. Cloud
5.
What does tape
storage commonly use today?
A. SSD B. DLT and LTO C. Optical disk D.
Flash card
6.
Which storage
type gives users flexibility from 15GB to several terabytes?
A. Tape B. Cloud storage C. Flash drive D. CD/DVD
7.
Blu-Ray disks
can store up to how much data?
A. 5GB B. 18TB C. 100GB D. 1TB
8.
SD and micro-SD
cards can store up to:
A. 128TB B. 1GB C. 80GB D.
18TB
9.
What does
‘mirroring’ in RAID refer to?
A. Splitting
data between disks B. Creating
identical copies on multiple disks
C. Erasing data D.
Compressing data
10. What does RAID stand for?
A. Reliable
Array of Internal Devices B.
Random Access Integrated Drives
C. Redundant Array of Independent Disks D.
Rotating Accessible Internal Data
MCQs based on Application
11. Which backup method should be used daily in organizations
with very large data?
A. Full backup B. Incremental backup C. Differential backup D. No backup
12. If a user needs fast recovery and only changed files
since the last FULL backup, which method is best?
A. Incremental B. Differential C. RAID 0 D. JBOD
13. Which backup media is MOST suitable for small offices
needing 18TB capacity?
A. Tape B. External portable drive C. CD/DVD D. Cloud
14. A company wants long-term backup with minimum media
usage. Which rotation scheme is most suitable?
A. Father/Son B. Incremental
Rotation
C. Tower of Hanoi D.
Grandfather–Father–Son
15. A business wants off-site backup that can be accessed
with an internet connection. Which method is best?
A. Tape library B. Blu-Ray C. Cloud storage D.
USB
16. Which RAID level improves speed but provides NO
redundancy?
A. RAID 1 B. RAID 10 C. RAID 0 D.
RAID 5
17. Which Windows feature helps recover deleted files?
A. System
Restore B.
Device Manager
C. Windows File Recovery D.
Task Manager
18. A user needs to restore system settings to an earlier
date. Which feature should be used?
A. Startup
Repair B. System Restore C. Disk Cleanup D. BIOS reset
19. If a cloud provider goes offline, what is the drawback?
A. Data
disappears forever B. You
cannot access your backups temporarily
C. The cloud storage becomes full D.
Tape backup starts automatically
20. Which media is best for backing up just a few computers?
A. Optical disks B. Tape library C. RAID 3 D. JBOD
MCQs based on Higher Ability
21. Which RAID level provides speed, redundancy, and
distributed parity?
A. RAID 0 B. RAID 1 C. RAID 5 D.
JBOD
22. Which RAID level combines striping and mirroring?
A. RAID 10 B. RAID 3 C. RAID 5 D.
Big
23. Which media rotation scheme provides the longest recovery
window using minimal media?
A.
Grandfather-Father-Son B.
Tower of Hanoi
C. Father-Son D.
Incremental rotation
24. Which RAID level can recover from only ONE drive failure
in the mirrored set?
A. RAID 0 B. RAID 10 C. JBOD D.
Big
25. What is a disadvantage of the Tower of Hanoi rotation
method?
A. Very small
recovery window B. Wear and tear on
frequently used media
C. Too many tapes needed D.
No long-term recovery
26. Which method writes data on one drive until it is full,
then moves to the next drive?
A. RAID 1 B. Big (Spanning) C. RAID 0 D. Clone
27. Which RAID mode has a spare drive ready to rebuild
automatically?
A. RAID 5 B. RAID 0 C. Clone (RAID 1 + Spare) D. RAID 3
28. What is the main purpose of parity in RAID?
A. Speed up
backup B.
Calculate data for rebuilding
C. Remove duplicate data D.
Format disks
29. Which rotation scheme uses three monthly tapes aside from
weekly tapes?
A. Father/Son B. Tower
of Hanoi
C. Grandfather-Father-Son D.
Incremental rotation
30. Which RAID mode provides large size and fastest speed but
NO protection?
A. RAID 1 B.
RAID 3 C. RAID 0 D. RAID 5
|
ANSWER KEY |
||||||||||||
|
1 |
B |
6 |
B |
11 |
B |
16 |
C |
21 |
C |
26 |
B |
31 |
|
2 |
C |
7 |
C |
12 |
B |
17 |
C |
22 |
A |
27 |
C |
32 |
|
3 |
C |
8 |
A |
13 |
B |
18 |
B |
23 |
B |
28 |
B |
33 |
|
4 |
B |
9 |
B |
14 |
C |
19 |
B |
24 |
B |
29 |
C |
34 |
|
5 |
B |
10 |
C |
15 |
C |
20 |
B |
25 |
B |
30 |
C |
35 |
Short Questions based on Knowledge & Understanding
1.
What is backup
and recovery, and why is it important for organizations?
2.
Define a full
backup and explain one major advantage of using it.
3.
What is an
incremental backup? State one benefit of this method.
4.
What does a
differential backup copy, and when is it used?
5.
List any four
examples of backup devices or media.
6.
Describe tape
backup and mention why LTO tapes are commonly used today.
7.
What is cloud
storage, and how does it help with data backup?
8.
Explain what
optical drives are and why they are not ideal for business use.
9.
Define RAID and
explain what mirroring means.
10. What is the purpose of parity in RAID systems?
Short Questions based on Application
11. When should an organization choose incremental backups
instead of full backups?
12. How can portable external hard drives be used effectively
in small office backup systems?
13. Describe one risk of relying only on cloud storage for
backup.
14. How can a business decide the best backup schedule for
its data?
15. How does the Tower of Hanoi backup rotation help when
limited media sets are available?
16. Explain how RAID 1 can help protect business data during
a single drive failure.
17. Describe a situation where Startup Repair may be needed
in Windows recovery.
Short Questions based on Higher Ability
18. Compare full, incremental, and differential backups in
terms of speed and storage usage.
19. Explain why tape libraries are still used in large data
centers despite newer technologies.
20. Analyze the benefits and drawbacks of using cloud storage
as a primary backup method.
21. Evaluate the differences between RAID 5 and RAID 10 in
terms of performance and redundancy.
22. What makes the Tower of Hanoi rotation suitable for
long-term recovery planning?
23. Why is RAID not considered a replacement for traditional
backup systems?
24. Explain how recovery techniques like System Restore and
File Recovery help maintain system reliability.
25. Assess the impact of media wear and tear in the Tower of
Hanoi rotation method.
26. Discuss why a business might choose incremental rotation
over other backup rotation methods.
27. Compare the advantages of SSDs, HDDs, and flash storage
for backup purposes.
Long Questions based on Knowledge & Understanding
28. What does the backup and recovery mean? Discuss why
organizations rely on these processes and describe the common causes of data
loss.
29. Describe the three main backup methods (full,
incremental, and differential). Explain how each method works and compare their
advantages and disadvantages.
30. What do you mean by backup devices and media? Describe at
least five types of storage media and explain their storage capacity and usage.
31. Discuss the characteristics, advantages, and limitations
of tape backup systems.
32. Explain cloud storage as a backup medium. Describe its
storage flexibility and the benefits and risks associated with using cloud
services.
33. Compare optical drives, portable drives, flash storage,
and SD/micro-SD cards in terms of capacity, cost, and usability for backup.
34. Describe RAID technology in detail. Explain the roles of
striping, mirroring, and parity in different RAID levels.
35. Discuss the importance of recovery techniques in Windows.
Explain how System Restore, Startup Repair, and Windows File Recovery help
maintain system stability.
Long Questions based on Application
36. An organization handles large volumes of data daily.
Explain how it should choose between full, incremental, and differential backup
methods, providing real examples.
37. A small office has limited budget but needs secure
backups. Compare portable drives, optical drives, and cloud storage and
recommend the best option with justification.
38. A user needs to restore a Windows computer that is
failing to boot. Explain how Startup Repair and System Restore can be used
step-by-step in recovery.
39. A large data center needs high speed and redundancy in
storage. Compare RAID 5 and RAID 10 and justify which one fits better for such
an environment.
Long Questions based on Higher Ability
40. Explain the good and bad sides of full, incremental, and
differential backups, and suggest the best mixed backup plan for a medium-sized
company.
41. Compare tape backups and cloud storage in terms of cost,
durability, speed, and reliability over many years.
42. Explain how different media rotation methods reduce data
loss.
43. Explain why RAID alone cannot fully protect data and give
examples where RAID fails but backups can save the data.
44. Describe the main Windows recovery tools and explain how
well they help restore a system after problems or failures.
45. Explain what parity is in RAID 3 and RAID 5, how it helps
in data recovery, and how it affects performance.
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