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.

430
Total Questions

Practice Questions

Page 21 of 22
Question #401
A laser mouse uses:
A. LED only
B. Laser for better surface compatibility
C. Ball
D. Mechanical
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option B

Explanation:
Precision tracking.
This question belongs to: Computer Computer Hardware
Question #402
The purpose of a case fan is:
A. GPU only
B. PSU only
C. Overall system airflow
D. CPU only
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option C

Explanation:
Balanced cooling.
This question belongs to: Computer Computer Hardware
Question #403
What is ' chroma subsampling' in video output?
A. Resolution scaling
B. Compression of color information
C. Brightness control
D. Refresh adjustment
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option B

Explanation:
Affects color accuracy in HDMI.
This question belongs to: Computer Computer Hardware
Question #404
Which device is used for large engineering drawings?
A. Plotter
B. Monitor
C. Standard printer
D. Scanner
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option A

Explanation:
Wide format output.
This question belongs to: Computer Computer Hardware
Question #405
The instruction cycle in CPU includes:
A. Store only
B. Fetch, decode, execute
C. Display only
D. Print only
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option B

Explanation:
Basic operation.
This question belongs to: Computer Computer Hardware
Question #406
What is the benefit of IPS glow?
A. It is a minor drawback actually, but IPS has good angles
B. Advantage
C. For TN
D. No glow
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option A

Explanation:
Trade-off for viewing angles.
This question belongs to: Computer Computer Hardware
Question #407
NFC is a short-range:
A. Display tech
B. Storage
C. Printing tech
D. Input/communication technology
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option D

Explanation:
For contactless payments etc.
This question belongs to: Computer Computer Hardware
Question #408
The SATA III speed is:
A. 1.5 Gbps
B. 10 Gbps
C. 1 Gbps
D. 6 Gbps
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option D

Explanation:
Standard for many drives.
This question belongs to: Computer Computer Hardware
Question #409
Dynamic contrast ratio in monitors is:
A. Color only
B. Static only
C. Fixed
D. Adjusted backlight for better perceived contrast
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option D

Explanation:
Marketing vs real contrast.
This question belongs to: Computer Computer Hardware
Question #410
A 3D mouse or space mouse is used for:
A. 3D modeling and navigation
B. Text entry
C. 2D only
D. Printing
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option A

Explanation:
CAD/CAM applications.
This question belongs to: Computer Computer Hardware
Question #411
What manages power states in hardware?
A. OS only
B. Printer driver
C. BIOS only
D. ACPI
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option D

Explanation:
Advanced Configuration and Power Interface.
This question belongs to: Computer Computer Hardware
Question #412
The main limitation of membrane keyboards is:
A. Higher cost
B. Less durable
C. Less tactile feedback than mechanical
D. Louder
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option C

Explanation:
Common in standard models.
This question belongs to: Computer Computer Hardware
Question #413
What is the purpose of a grounding strap when handling hardware?
A. Prevent electrostatic discharge damage
B. Increase speed
C. Cool components
D. Print labels
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option A

Explanation:
ESD protection.
This question belongs to: Computer Computer Hardware
Question #414
Mini-LED backlighting improves:
A. Power negatively
B. Local dimming and contrast in LCDs
C. Response time
D. Size
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option B

Explanation:
Better than traditional LED.
This question belongs to: Computer Computer Hardware
Question #415
An OMR scanner is used for:
A. Barcode
B. Reading marked bubbles in exams
C. Photo scanning
D. Text recognition
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option B

Explanation:
Competitive exam answer sheets.
This question belongs to: Computer Computer Hardware
Question #416
The cache hit ratio indicates:
A. Printer efficiency
B. Display quality
C. Memory failure
D. Efficiency of cache usage
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option D

Explanation:
Higher is better.
This question belongs to: Computer Computer Hardware
Question #417
What allows hot swapping of devices?
A. PS/2
B. USB, SATA with support
C. All ports
D. VGA
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option B

Explanation:
Without reboot.
This question belongs to: Computer Computer Hardware
Question #418
The color accuracy Delta E value should be low for:
A. Basic use
B. Gaming only
C. Professional monitors
D. Office text
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option C

Explanation:
Minimal color difference.
This question belongs to: Computer Computer Hardware
Question #419
A joystick with throttle is common in:
A. Strategy games
B. Racing games only
C. Puzzle games
D. Flight simulation
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option D

Explanation:
Aviation controls.
This question belongs to: Computer Computer Hardware
Question #420
What is the function of a northbridge in older systems?
A. High speed interconnect
B. Storage control
C. Slow I/O
D. Audio
Discuss
Get Complete Subject PDF for Computer

Correct Answer: Option A

Explanation:
Memory and graphics.
This question belongs to: Computer Computer Hardware

More Computer Topics

Computer Abbreviations MCQs
Computer Fundamentals MCQs
Computer Networking MCQs
Computer Software MCQs
CPU (Central Processing Unit) MCQs
Cyber Security MCQs
Database Management System (DBMS) MCQs
Internet and Web Technologies MCQs
Memory and Storage Devices MCQs
Microsoft Office MCQs
Operating Systems MCQs
Programming Languages MCQs
Today's Top Topics
Cyber Security 269 Computer Abbreviations 369 Operating Systems 510 Computer Software 347 CPU (Central Processing Unit) 327
Explore Subjects
Accountancy and Statistics 3179 Science 4430 Computer 5279 History GK 3374 Current Affairs 575
Practice Mix
The receipt ______ they gave is fake.
Identify the error: 'He is the most young of the team.'
Which view in PowerPoint displays thumbnails of all slides for easy rearrangement?
A sum of money at compound interest doubles in 5 years. In how many years will it become 4 times?
Which of the following is an example of educational software?