Computer Hardware MCQs

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Computer Hardware MCQs

Practice Computer Hardware MCQs with answers and detailed explanations covering input devices, output devices, scanners, printers, keyboards, monitors and computer hardware components frequently asked in competitive examinations.

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Total Questions

Practice Questions

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Question #141
What is the advantage of LED backlit monitors over CCFL?
A. Thinner, energy efficient, better contrast
B. Lower resolution
C. Higher cost only
D. Slower response
Discuss
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Correct Answer: Option A

Explanation:
LEDs are modern standard.
This question belongs to: Computer Computer Hardware
Question #142
OCR software is most useful after using:
A. Scanner
B. Mouse
C. Printer
D. Speaker
Discuss
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Correct Answer: Option A

Explanation:
To convert scanned images to text.
This question belongs to: Computer Computer Hardware
Question #143
The term 'throttling' in CPU refers to:
A. Formatting
B. Increasing speed
C. Reducing speed to prevent overheating
D. Connecting devices
Discuss
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Correct Answer: Option C

Explanation:
Thermal throttling protects hardware.
This question belongs to: Computer Computer Hardware
Question #144
Which is not a type of printer?
A. Daisy wheel
B. Drum printer
C. Chain printer
D. Cache printer
Discuss
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Correct Answer: Option D

Explanation:
Cache is memory, not a printer type.
This question belongs to: Computer Computer Hardware
Question #145
What connects expansion cards to motherboard?
A. Cables only
B. Slots like PCIe
C. Wireless signals
D. Power supply
Discuss
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Correct Answer: Option B

Explanation:
Expansion slots allow upgrades.
This question belongs to: Computer Computer Hardware
Question #146
TN panels in monitors are good for:
A. Wide viewing angles
B. Professional photo editing
C. Fast response time in gaming
D. Color accuracy
Discuss
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Correct Answer: Option C

Explanation:
TN panels offer speed but poorer angles.
This question belongs to: Computer Computer Hardware
Question #147
What is the primary storage in most modern laptops?
A. SSD
B. CD drive
C. HDD
D. Floppy
Discuss
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Correct Answer: Option A

Explanation:
SSDs are standard for performance.
This question belongs to: Computer Computer Hardware
Question #148
A biometric mouse may include:
A. Laser only
B. Extra buttons only
C. Fingerprint reader
D. RGB lighting
Discuss
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Correct Answer: Option C

Explanation:
For secure authentication.
This question belongs to: Computer Computer Hardware
Question #149
What does the 'northbridge' primarily connect?
A. Storage drives
B. CPU, RAM, GPU
C. Network cards
D. USB and audio
Discuss
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Correct Answer: Option B

Explanation:
High bandwidth components.
This question belongs to: Computer Computer Hardware
Question #150
The resolution 2560x1440 is known as:
A. WQHD or 1440p
B. 4K
C. SD
D. HD
Discuss
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Correct Answer: Option A

Explanation:
Wide Quad HD resolution.
This question belongs to: Computer Computer Hardware
Question #151
Which hardware is used for 3D scanning?
A. Inkjet printer
B. Specialized 3D scanners
C. Laser printer
D. Standard flatbed scanner
Discuss
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Correct Answer: Option B

Explanation:
3D scanners create digital models of objects.
This question belongs to: Computer Computer Hardware
Question #152
What is ECC memory used for?
A. Monitors
B. Laptops
C. Error correction in servers
D. Gaming PCs only
Discuss
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Correct Answer: Option C

Explanation:
Error-Correcting Code memory for reliability.
This question belongs to: Computer Computer Hardware
Question #153
The standard for wireless keyboard and mouse is:
A. HDMI
B. USB cable only
C. Infrared
D. Bluetooth or 2.4GHz dongle
Discuss
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Correct Answer: Option D

Explanation:
Modern wireless peripherals use these.
This question belongs to: Computer Computer Hardware
Question #154
What causes screen tearing?
A. Low resolution
B. Color calibration
C. Mismatch between frame rate and refresh rate
D. High brightness
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Correct Answer: Option C

Explanation:
V-Sync or adaptive sync technologies fix it.
This question belongs to: Computer Computer Hardware
Question #155
Which component has direct memory access (DMA)?
A. Speaker
B. Keyboard
C. Monitor
D. Hard disk controller
Discuss
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Correct Answer: Option D

Explanation:
DMA allows devices to access memory without CPU.
This question belongs to: Computer Computer Hardware
Question #156
All-in-one computers integrate:
A. Keyboard and mouse
B. Monitor, CPU, and peripherals in one unit
C. Only printer and scanner
D. External storage
Discuss
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Correct Answer: Option B

Explanation:
AIO PCs save space.
This question belongs to: Computer Computer Hardware
Question #157
What is the use of a cooling pad for laptops?
A. To increase battery life
B. To reduce overheating
C. To scan documents
D. To improve typing
Discuss
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Correct Answer: Option B

Explanation:
Extra fans help with heat dissipation.
This question belongs to: Computer Computer Hardware
Question #158
M.2 is a form factor for:
A. Monitors
B. Printers
C. RAM
D. SSDs and expansion cards
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Correct Answer: Option D

Explanation:
Compact high-speed storage interface.
This question belongs to: Computer Computer Hardware
Question #159
Which printer is suitable for continuous paper?
A. Dot matrix with tractor feed
B. 3D
C. Inkjet
D. Laser
Discuss
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Correct Answer: Option A

Explanation:
Tractor feed for fan-fold paper.
This question belongs to: Computer Computer Hardware
Question #160
The instruction set architecture of CPU determines:
A. Color
B. Price only
C. Physical size
D. Compatibility with software
Discuss
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Correct Answer: Option D

Explanation:
Like x86 or ARM.
This question belongs to: Computer Computer Hardware

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