Computer Hardware Important Mcqs

41- Which device is used to connect a computer to a network ?

A. RAM
B. NIC
C. CPU
D. Hard Drive 

Answer : B. NIC (Network Interface Card)

42- Which part of the CPU performs arithmetic and logical operations ?

A. Arithmetic Logic Unit (ALU)
B. Control unit
C. Registers
D. Cache 

Answer : A. Arithmetic Logic Unit (ALU)

43- What is the function of RAM in a computer ?

A. Storing data permanently
B. Processing data
C. Storing data temporarily for quick access
D. Controlling input and output devices

Answer : C. Storing data temporarily for quick access

44- Which of the following is an example of an output device ?

A. Keyboard
B. Mouse
C. Scanner
D. Monitor

Answer : D. Monitor

45- What type of storage device uses magnetic disks to store data ?

A. SSD
B. Hard Disk Drive
C. Flash Drive
D. CD ROM

Answer : B. Hard Disk Drive

46- Which port is commonly used to connect external storage devices ?

A. VGA
B. USB
C. HDMI
D. PS/2

Answer : B. USB

47- Which of the following is not a primary function of the motherboard ?

A. Connecting hardware components
B. Providing power to the CPU
C. Displaying graphics on the monitor
D. Managing data flow between components

Answer : C. Displaying graphics on the monitor

48- Which memory is the fastest in a computer system ?

A. RAM
B. Hard Disk
C. SSD
D. Cache Memory

Answer : D. Cache Memory

49- Which type of expansion slot is commonly used for modern graphics cards ?

A. PCIe
B. AGP
C. ISA
D. VGA 

Answer : A. PCIe

50- What does HDMI stand for ?

A. High Definition Media Interface
B. High Data Multimedia Interface
C. Hyper Digital Monitor Interface
D. High Device Memory Integration

Answer : A. High Definition Media Interface

51- Which of the following is an example of volatile memory ?

A. ROM
B. RAM
C. Hard Drive
D. Flash Drive 

Answer : B. RAM

52- Which device is used as a pointing device in a computer ?

A. Printer
B. Keyboard
C. Scanner
D. Mouse

Answer : D. Mouse

53- Which component is responsible for converting AC power to DC power in a computer ?

A. CPU
B. Motherboard
C. PSU
D. RAM

Answer : C. Power Supply Unit (PSU)

54- Which of the following is used to cool the CPU ?

A. Heat Sink
B. PSU
C. Sound Card
D. Hard Drive 

Answer : A. Heat Sink

55- What is the primary function of a graphics card ?

A. To store data
B. To manage power supply
C. To render images and videos
D. To process input devices

Answer : C. To render images and videos

56- Which type of printer uses a ribbon for printing ?

A. Laser Printer
B. Inkjet Printer
C. Thermal Printer
D. Dot Matrix Printer

Answer : D. Dot Matrix Printer

57- Which storage device has no moving parts ?

A. Hard Disk Drive
B. Solid-State Drive
C. Floppy Disk
D. CD-ROM

Answer : B. Solid-State Drive (SSD)

58- Which component stores the computer's firmware ?

A. ROM
B. RAM
C. Hard Drive
D. SSD

Answer : A. ROM

59- Which connector is used to connect a computer to a wired network ?

A. HDMI
B. USB
C. VGA
D. Ethernet (RJ45)

Answer : D. Ethernet (RJ45)

60- Which type of cable is used to connect a monitor to a computer ?

A. RJ45
B. SATA
C. HDMI
D. USB

Answer : B. SATA

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