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 4 of 22
Question #61
What is the resolution standard for Full HD monitors?
A. 1280x720
B. 1920x1080
C. 1024x768
D. 3840x2160
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Correct Answer: Option B

Explanation:
Full HD is 1920x1080 pixels.
This question belongs to: Computer Computer Hardware
Question #62
Which device is used to input handwritten data?
A. Stylus with graphics tablet
B. Flatbed scanner only
C. Optical mouse
D. Laser printer
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Correct Answer: Option A

Explanation:
Graphics tablets with stylus allow natural handwriting input.
This question belongs to: Computer Computer Hardware
Question #63
What is the purpose of CMOS in computers?
A. To store BIOS settings and system time
B. To process graphics
C. To connect USB devices
D. To provide power backup
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Correct Answer: Option A

Explanation:
CMOS battery-powered memory holds configuration.
This question belongs to: Computer Computer Hardware
Question #64
Bubble Jet is a technology associated with:
A. Dot matrix printers
B. Laser printers
C. 3D printers
D. Inkjet printers
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Correct Answer: Option D

Explanation:
Bubble Jet is a Canon inkjet printing technology.
This question belongs to: Computer Computer Hardware
Question #65
Which hardware component is essential for virtual memory?
A. Keyboard
B. Monitor
C. CPU
D. RAM and Hard Disk
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Correct Answer: Option D

Explanation:
Virtual memory uses HDD/SSD to extend RAM.
This question belongs to: Computer Computer Hardware
Question #66
What does HDMI stand for?
A. High Definition Multimedia Interface
B. Hybrid Display Monitor Input
C. High Data Multimedia Interface
D. High Density Memory Input
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Correct Answer: Option A

Explanation:
HDMI is used for high-quality audio and video transmission.
This question belongs to: Computer Computer Hardware
Question #67
A joystick is mainly used in:
A. Gaming and simulation
B. Printing
C. Office data entry
D. Document scanning
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Correct Answer: Option A

Explanation:
Joysticks provide precise control in games.
This question belongs to: Computer Computer Hardware
Question #68
Which is the fastest type of memory?
A. Hard Disk
B. Register in CPU
C. Main RAM
D. Cache
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Correct Answer: Option B

Explanation:
CPU registers are the fastest accessible memory.
This question belongs to: Computer Computer Hardware
Question #69
Laser printers use which type of memory for buffering print jobs?
A. ROM
B. No memory needed
C. Printer's internal RAM
D. Flash memory only
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Correct Answer: Option C

Explanation:
Printer RAM helps in handling complex print jobs.
This question belongs to: Computer Computer Hardware
Question #70
What is the main function of I/O ports?
A. Connecting input and output devices
B. Processing data
C. Storing programs
D. Cooling the system
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Correct Answer: Option A

Explanation:
Ports like USB, HDMI allow device connectivity.
This question belongs to: Computer Computer Hardware
Question #71
Which scanner is best for high-volume document scanning?
A. Drum
B. Handheld
C. Sheet-fed
D. Flatbed
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Correct Answer: Option C

Explanation:
Sheet-fed scanners are efficient for multiple pages.
This question belongs to: Computer Computer Hardware
Question #72
The term 'overclocking' refers to:
A. Installing new OS
B. Cleaning hardware
C. Formatting hard disk
D. Increasing CPU clock speed beyond specification
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Correct Answer: Option D

Explanation:
Overclocking boosts performance but risks heat issues.
This question belongs to: Computer Computer Hardware
Question #73
What type of output is produced by a plotter?
A. Scanned images
B. Audio files
C. Text documents
D. Vector graphics and large drawings
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Correct Answer: Option D

Explanation:
Plotters are used for CAD and engineering drawings.
This question belongs to: Computer Computer Hardware
Question #74
Which component has the highest storage hierarchy in terms of speed?
A. Tertiary storage
B. Secondary storage
C. Cache memory
D. Optical drive
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Correct Answer: Option C

Explanation:
Cache is closest to CPU in memory hierarchy.
This question belongs to: Computer Computer Hardware
Question #75
DVI port is primarily used for:
A. Digital video signal
B. Audio transmission
C. Network connection
D. Power supply
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Correct Answer: Option A

Explanation:
DVI connects monitors for digital video.
This question belongs to: Computer Computer Hardware
Question #76
Which input device uses reflected light for operation?
A. Mechanical mouse
B. Joystick
C. Optical mouse
D. Trackball
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Correct Answer: Option C

Explanation:
Optical mouse detects movement via light reflection.
This question belongs to: Computer Computer Hardware
Question #77
What is the capacity unit for modern RAM modules?
A. MB
B. GB
C. TB
D. KB
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Correct Answer: Option B

Explanation:
RAM is typically measured in gigabytes (e.g., 8GB, 16GB).
This question belongs to: Computer Computer Hardware
Question #78
Multifunction printers can perform:
A. Only printing
B. Only scanning
C. Print, scan, copy, and sometimes fax
D. Only projection
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Correct Answer: Option C

Explanation:
All-in-one printers combine multiple functions.
This question belongs to: Computer Computer Hardware
Question #79
The socket where CPU is installed is called:
A. PCI slot
B. CPU socket
C. Power socket
D. RAM slot
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Correct Answer: Option B

Explanation:
Motherboard has specific sockets for processors.
This question belongs to: Computer Computer Hardware
Question #80
What does refresh rate indicate in monitors?
A. Number of pixels
B. Color depth
C. How many times screen is redrawn per second
D. Power consumption
Discuss
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Correct Answer: Option C

Explanation:
Measured in Hz, higher reduces flicker (e.g., 144Hz).
This question belongs to: Computer Computer Hardware

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