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 15 of 22
Question #281
What is adaptive sync technology?
A. Fixed refresh
B. Color adjustment
C. Brightness control
D. Matches monitor refresh to GPU frame rate
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Correct Answer: Option D

Explanation:
Eliminates screen tearing.
This question belongs to: Computer Computer Hardware
Question #282
A graphic tablet with pressure sensitivity is useful for:
A. Typing
B. Digital art and design
C. Basic pointing
D. Scanning
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Correct Answer: Option B

Explanation:
Natural drawing experience.
This question belongs to: Computer Computer Hardware
Question #283
What does the acronym 'SoC' stand for in hardware?
A. System on Chip
B. Screen on Computer
C. Storage on Chip
D. System Output Control
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Correct Answer: Option A

Explanation:
Integrated CPU, GPU etc. in one chip.
This question belongs to: Computer Computer Hardware
Question #284
Which printer setting affects the quality vs speed trade-off?
A. Orientation
B. Paper size
C. Color mode
D. Print quality mode (draft, normal, best)
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Correct Answer: Option D

Explanation:
Higher quality slower.
This question belongs to: Computer Computer Hardware
Question #285
The front side bus (FSB) has been largely replaced by:
A. Slower buses
B. USB
C. HDMI
D. Direct CPU connections or QPI
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Correct Answer: Option D

Explanation:
Modern architectures.
This question belongs to: Computer Computer Hardware
Question #286
What is the benefit of anti-reflective coatings?
A. Lowers resolution
B. Increases glare
C. Changes colors
D. Reduces glare for better visibility
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Correct Answer: Option D

Explanation:
In bright environments.
This question belongs to: Computer Computer Hardware
Question #287
RFID tags are read using:
A. Radio frequency input devices
B. Optical scanners
C. Thermal sensors
D. Magnetic readers
Discuss
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Correct Answer: Option A

Explanation:
Contactless identification.
This question belongs to: Computer Computer Hardware
Question #288
The endurance of flash memory is limited by:
A. Read cycles
B. Size only
C. Write/erase cycles
D. Temperature only
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Correct Answer: Option C

Explanation:
Wear leveling helps extend life.
This question belongs to: Computer Computer Hardware
Question #289
What is a common connector for external monitors on laptops?
A. Parallel
B. Serial
C. HDMI or USB-C with DisplayPort
D. PS/2
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Correct Answer: Option C

Explanation:
Modern video output.
This question belongs to: Computer Computer Hardware
Question #290
Mechanical keyboards are popular among:
A. Silent environments exclusively
B. Budget users only
C. Typists and gamers for feedback
D. Mobile users
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Correct Answer: Option C

Explanation:
Tactile and durable.
This question belongs to: Computer Computer Hardware
Question #291
Which component manages interrupts in the system?
A. ALU
B. Interrupt controller or APIC
C. Graphics controller
D. Memory controller
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Correct Answer: Option B

Explanation:
Handles device requests.
This question belongs to: Computer Computer Hardware
Question #292
The best monitor for color-critical work is typically:
A. IPS with wide gamut and calibration support
B. Basic LED
C. TN panel
D. OLED for office
Discuss
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Correct Answer: Option A

Explanation:
Accurate reproduction.
This question belongs to: Computer Computer Hardware
Question #293
What is the primary function of a scanner's light source?
A. Store data
B. Print image
C. Illuminate document for sensor capture
D. Cool the device
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Correct Answer: Option C

Explanation:
CCD or CIS sensors need light.
This question belongs to: Computer Computer Hardware
Question #294
DDR5 RAM offers improvements in:
A. Lower capacity
B. Higher latency
C. Compatibility with old systems
D. Speed and efficiency over DDR4
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Correct Answer: Option D

Explanation:
Latest standard in 2026.
This question belongs to: Computer Computer Hardware
Question #295
Cloud-ready printers support:
A. No network
B. Direct printing from cloud services
C. Scanning to cloud only
D. Offline only
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Correct Answer: Option B

Explanation:
Convenient remote access.
This question belongs to: Computer Computer Hardware
Question #296
The integrated GPU is part of:
A. RAM
B. CPU in many processors
C. Storage
D. Motherboard chipset only
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Correct Answer: Option B

Explanation:
For basic graphics without discrete card.
This question belongs to: Computer Computer Hardware
Question #297
What causes moire patterns in scanned images?
A. Interference with printed patterns
B. Low resolution
C. High ink
D. Wrong color mode
Discuss
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Correct Answer: Option A

Explanation:
Descreening filters help.
This question belongs to: Computer Computer Hardware
Question #298
A hardware firewall can be a:
A. Monitor setting
B. Dedicated device or router feature
C. Printer option
D. Software only
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Correct Answer: Option B

Explanation:
Network protection.
This question belongs to: Computer Computer Hardware
Question #299
Which pointing device uses a ball for movement detection?
A. Trackball
B. Touchpad
C. Optical mouse
D. Stylus
Discuss
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Correct Answer: Option A

Explanation:
User moves the ball.
This question belongs to: Computer Computer Hardware
Question #300
What is the main advantage of liquid cooling over air cooling?
A. Easier installation
B. Lower cost
C. No maintenance
D. Better heat dissipation for high-end CPUs
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Correct Answer: Option D

Explanation:
For overclocking and quiet operation.
This question belongs to: Computer Computer Hardware

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