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

Page 10 of 22
Question #181
What is the role of firmware in hardware?
A. Application software
B. Low-level software controlling hardware
C. User interface
D. OS kernel only
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Correct Answer: Option B

Explanation:
Like BIOS/UEFI.
This question belongs to: Computer Computer Hardware
Question #182
VA panels offer better:
A. Both a and b
B. Speed than all
C. Contrast ratios than IPS
D. Viewing angles than TN
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Correct Answer: Option A

Explanation:
Good middle ground for contrast.
This question belongs to: Computer Computer Hardware
Question #183
Thunderbolt ports support:
A. Printing only
B. High-speed data, video, and power
C. Scanning
D. Audio only
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Correct Answer: Option B

Explanation:
Versatile connectivity.
This question belongs to: Computer Computer Hardware
Question #184
What is a common problem with older CRT monitors?
A. Low weight
B. Screen burn-in
C. Low power
D. High resolution always
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Correct Answer: Option B

Explanation:
Phosphor degradation over time.
This question belongs to: Computer Computer Hardware
Question #185
Which component uses magnetic fields for data storage?
A. Traditional HDD
B. SSD
C. Cache
D. RAM
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Correct Answer: Option A

Explanation:
Platters and read/write heads.
This question belongs to: Computer Computer Hardware
Question #186
The number of keys in a standard keyboard is usually:
A. 200
B. 75
C. 101 or 104
D. 50
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Correct Answer: Option C

Explanation:
Full-size keyboards.
This question belongs to: Computer Computer Hardware
Question #187
What is the purpose of a UPS?
A. Universal Printer System
B. User Processing Software
C. Ultra Power Saver
D. Uninterruptible Power Supply for backup
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Correct Answer: Option D

Explanation:
Provides temporary power during outages.
This question belongs to: Computer Computer Hardware
Question #188
Which is an advanced output device for 3D models?
A. Dot matrix
B. 3D Printer
C. Laser printer
D. Inkjet
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Correct Answer: Option B

Explanation:
Additive manufacturing technology.
This question belongs to: Computer Computer Hardware
Question #189
What does the term 'latency' refer to in hardware?
A. Resolution
B. Storage capacity
C. Clock speed
D. Delay in response time
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Correct Answer: Option D

Explanation:
Important for RAM, SSD, and networks.
This question belongs to: Computer Computer Hardware
Question #190
Wireless charging pads for devices use:
A. Electromagnetic induction
B. Bluetooth
C. Infrared
D. USB cables
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Correct Answer: Option A

Explanation:
Qi standard for phones.
This question belongs to: Computer Computer Hardware
Question #191
The primary difference between active and passive cooling is:
A. Active is cheaper
B. No difference
C. Passive is louder
D. Active uses fans, passive relies on heat sinks
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Correct Answer: Option D

Explanation:
For noise-sensitive environments.
This question belongs to: Computer Computer Hardware
Question #192
What input method is used in tablets?
A. Touchscreen and stylus
B. Trackball
C. Light pen
D. Mechanical keyboard only
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Correct Answer: Option A

Explanation:
Multi-touch capacitive screens.
This question belongs to: Computer Computer Hardware
Question #193
eMMC storage is commonly found in:
A. Printers
B. Budget smartphones and tablets
C. Servers
D. High-end desktops
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Correct Answer: Option B

Explanation:
Embedded MultiMediaCard.
This question belongs to: Computer Computer Hardware
Question #194
Which feature allows monitors to swivel and tilt?
A. Fixed base only
B. Both
C. VESA mount
D. Ergonomic stand
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Correct Answer: Option B

Explanation:
Improves user comfort.
This question belongs to: Computer Computer Hardware
Question #195
What is the main function of a network interface card (NIC)?
A. Connect to network
B. Print documents
C. Scan images
D. Process graphics
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Correct Answer: Option A

Explanation:
Wired or wireless connectivity.
This question belongs to: Computer Computer Hardware
Question #196
Piezoelectric technology is used in some:
A. Monitors
B. Inkjet printers
C. Keyboards
D. Laser printers
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Correct Answer: Option B

Explanation:
For precise ink droplet control.
This question belongs to: Computer Computer Hardware
Question #197
What does 'TBW' rating indicate for SSDs?
A. Thermal Bandwidth
B. Temporary Backup Write
C. Terabytes Written endurance
D. Total Bytes Width
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Correct Answer: Option C

Explanation:
Lifespan measure for flash memory.
This question belongs to: Computer Computer Hardware
Question #198
A common resolution for business projectors is:
A. SDTV
B. VGA only
C. Only 4K
D. XGA or WXGA
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Correct Answer: Option D

Explanation:
Suitable for presentations.
This question belongs to: Computer Computer Hardware
Question #199
Which component is crucial for overclocking stability?
A. Higher resolution monitor
B. Larger case only
C. Wireless peripherals
D. Good cooling and power delivery
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Correct Answer: Option D

Explanation:
Prevents instability.
This question belongs to: Computer Computer Hardware
Question #200
What is the use of a document camera?
A. Scanning to file only
B. Real-time display of physical documents
C. Printing
D. Audio recording
Discuss
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Correct Answer: Option B

Explanation:
Also called visualizer.
This question belongs to: Computer Computer Hardware

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