Computer Hardware MCQs

Computer

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

Page 8 of 22
Question #141
What is the advantage of LED backlit monitors over CCFL?
A. Thinner, energy efficient, better contrast
B. Lower resolution
C. Slower response
D. Higher cost only
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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. Mouse
B. Speaker
C. Printer
D. Scanner
Discuss
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Correct Answer: Option D

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. Reducing speed to prevent overheating
C. Increasing speed
D. Connecting devices
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Correct Answer: Option B

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

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. Power supply
C. Slots like PCIe
D. Wireless signals
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Correct Answer: Option C

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. Fast response time in gaming
C. Professional photo editing
D. Color accuracy
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Correct Answer: Option B

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. Floppy
B. HDD
C. SSD
D. CD drive
Discuss
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Correct Answer: Option C

Explanation:
SSDs are standard for performance.
This question belongs to: Computer Computer Hardware
Question #148
A biometric mouse may include:
A. Extra buttons only
B. RGB lighting
C. Fingerprint reader
D. Laser only
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. CPU, RAM, GPU
B. USB and audio
C. Storage drives
D. Network cards
Discuss
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Correct Answer: Option A

Explanation:
High bandwidth components.
This question belongs to: Computer Computer Hardware
Question #150
The resolution 2560x1440 is known as:
A. WQHD or 1440p
B. SD
C. HD
D. 4K
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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. Standard flatbed scanner
D. Laser printer
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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. Gaming PCs only
B. Laptops
C. Monitors
D. Error correction in servers
Discuss
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Correct Answer: Option D

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. Bluetooth or 2.4GHz dongle
C. Infrared
D. USB cable only
Discuss
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Correct Answer: Option B

Explanation:
Modern wireless peripherals use these.
This question belongs to: Computer Computer Hardware
Question #154
What causes screen tearing?
A. Low resolution
B. High brightness
C. Mismatch between frame rate and refresh rate
D. Color calibration
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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. Keyboard
B. Speaker
C. Monitor
D. Hard disk controller
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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. Only printer and scanner
B. Keyboard and mouse
C. Monitor, CPU, and peripherals in one unit
D. External storage
Discuss
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Correct Answer: Option C

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 improve typing
C. To scan documents
D. To reduce overheating
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Correct Answer: Option D

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. SSDs and expansion cards
C. Printers
D. RAM
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Correct Answer: Option B

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

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

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

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