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 15 of 22
Question #281
What is adaptive sync technology?
A. Fixed refresh
B. Brightness control
C. Color adjustment
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. Scanning
B. Digital art and design
C. Typing
D. Basic pointing
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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. Screen on Computer
B. System on Chip
C. Storage on Chip
D. System Output Control
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Correct Answer: Option B

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. Paper size
B. Orientation
C. Print quality mode (draft, normal, best)
D. Color mode
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Correct Answer: Option C

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

Explanation:
Modern architectures.
This question belongs to: Computer Computer Hardware
Question #286
What is the benefit of anti-reflective coatings?
A. Increases glare
B. Changes colors
C. Lowers resolution
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. Optical scanners
B. Thermal sensors
C. Radio frequency input devices
D. Magnetic readers
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Correct Answer: Option C

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

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. PS/2
B. Parallel
C. HDMI or USB-C with DisplayPort
D. Serial
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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. Mobile users
B. Silent environments exclusively
C. Budget users only
D. Typists and gamers for feedback
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Correct Answer: Option D

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

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. OLED for office
D. TN panel
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. Illuminate document for sensor capture
B. Print image
C. Store data
D. Cool the device
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Correct Answer: Option A

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

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. Storage
B. Motherboard chipset only
C. CPU in many processors
D. RAM
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Correct Answer: Option C

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

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

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. No maintenance
B. Lower cost
C. Better heat dissipation for high-end CPUs
D. Easier installation
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Correct Answer: Option C

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

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