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. 3840x2160
C. 1920x1080
D. 1024x768
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Correct Answer: Option C

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. Optical mouse
C. Flatbed scanner only
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 provide power backup
B. To store BIOS settings and system time
C. To process graphics
D. To connect USB devices
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Correct Answer: Option B

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

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 Data Multimedia Interface
B. Hybrid Display Monitor Input
C. High Density Memory Input
D. High Definition Multimedia Interface
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Correct Answer: Option D

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. Document scanning
C. Office data entry
D. Printing
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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. Register in CPU
B. Hard Disk
C. Cache
D. Main RAM
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Correct Answer: Option A

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. No memory needed
B. Flash memory only
C. ROM
D. Printer's internal RAM
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Correct Answer: Option D

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. Processing data
B. Cooling the system
C. Connecting input and output devices
D. Storing programs
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Correct Answer: Option C

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. Flatbed
B. Handheld
C. Sheet-fed
D. Drum
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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. Increasing CPU clock speed beyond specification
C. Cleaning hardware
D. Formatting hard disk
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Correct Answer: Option B

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. Vector graphics and large drawings
C. Audio files
D. Text documents
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Correct Answer: Option B

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. Optical drive
B. Tertiary storage
C. Cache memory
D. Secondary storage
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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. Power supply
B. Network connection
C. Digital video signal
D. Audio transmission
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Correct Answer: Option C

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. Trackball
B. Optical mouse
C. Joystick
D. Mechanical mouse
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Correct Answer: Option B

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. KB
B. GB
C. TB
D. MB
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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 scanning
B. Only printing
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. Power socket
C. RAM slot
D. CPU socket
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Correct Answer: Option D

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

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

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