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. 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. Printer
B. Scanner
C. Speaker
D. Mouse
Discuss
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Correct Answer: Option B

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

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

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

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. Color accuracy
D. Professional photo editing
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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. CD drive
C. SSD
D. HDD
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. Laser only
B. Fingerprint reader
C. RGB lighting
D. Extra buttons only
Discuss
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Correct Answer: Option B

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

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

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. Error correction in servers
C. Laptops
D. Gaming PCs only
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Correct Answer: Option B

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

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

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. Hard disk controller
B. Speaker
C. Monitor
D. Keyboard
Discuss
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Correct Answer: Option A

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

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 reduce overheating
B. To scan documents
C. To improve typing
D. To increase battery life
Discuss
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Correct Answer: Option A

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. Laser
D. Inkjet
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. Compatibility with software
B. Color
C. Price only
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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