Computer

Basic Computer Components & Functions MCQs with Answers

What is the main function of the CPU?
a) Storing data
b) Processing instructions
c) Displaying output
d) Transmitting data

Which of the following is considered the brain of the computer?
a) RAM
b) Hard Drive
c) CPU
d) Monitor

What is the primary function of the RAM in a computer?
a) To store data permanently
b) To process instructions
c) To provide temporary data storage
d) To manage power consumption

Which component is responsible for storing data permanently on a computer?
a) CPU
b) RAM
c) Hard Drive
d) Power Supply

Which of these components helps in displaying output on a screen?
a) CPU
b) GPU
c) RAM
d) Motherboard

What is the primary function of the motherboard?
a) To provide a display for the user
b) To connect all components of the computer
c) To store data permanently
d) To cool the computer’s internal components

Which device is used to input data into a computer?
a) Printer
b) Monitor
c) Keyboard
d) Speaker

What does the power supply unit (PSU) provide for the computer?
a) Storage for data
b) Cooling for the CPU
c) Power to the internal components
d) Connection to the internet

Which of these is an input device?
a) Monitor
b) Keyboard
c) Printer
d) Speaker

What does a computer’s storage device do?
a) Process data
b) Display data
c) Store data permanently
d) Provide power

Which of the following is the main function of the operating system?
a) Process data
b) Manage hardware and software resources
c) Connect to the internet
d) Provide temporary storage

Which of these is an example of an output device?
a) Keyboard
b) Mouse
c) Printer
d) Scanner

Which of the following is the function of a cooling fan in a computer?
a) To store data
b) To cool the internal components
c) To display images
d) To process instructions

Which of these components is responsible for managing the computer’s memory?
a) RAM
b) CPU
c) Motherboard
d) Operating System

What is the function of the network card in a computer?
a) Store data
b) Process data
c) Enable communication with other computers
d) Display graphics

What type of device is a printer?
a) Input device
b) Output device
c) Storage device
d) Processing device

What does the BIOS (Basic Input/Output System) do?
a) Stores user files
b) Controls the communication between hardware and software
c) Provides power to the computer
d) Stores operating system files

What does the hard disk drive (HDD) store?
a) Temporary data
b) Permanent data
c) Power for the computer
d) Software applications only

What does the CPU’s ALU (Arithmetic Logic Unit) do?
a) Store data
b) Perform arithmetic and logic operations
c) Provide power to the computer
d) Manage the memory

Which of the following components is responsible for controlling the flow of data between the CPU and other parts of the computer?
a) RAM
b) Power Supply
c) Bus
d) GPU

Which of the following components is used to process graphical data?
a) CPU
b) GPU
c) RAM
d) Motherboard

Which of the following is responsible for managing the computer’s internal clock?
a) BIOS
b) CPU
c) RAM
d) Power Supply

Which part of the computer is responsible for handling data and instructions from external devices?
a) CPU
b) RAM
c) Input/Output Ports
d) Storage Drive

Which of the following is a permanent storage medium?
a) RAM
b) ROM
c) CPU
d) Cache

What is the main function of the cache memory in a computer?
a) Store data permanently
b) Store frequently accessed data to speed up processing
c) Provide backup power
d) Store system files

Which of these devices is used for permanent data storage?
a) RAM
b) SSD
c) CPU
d) GPU

Which of these is responsible for converting digital data into analog signals for transmission?
a) Modem
b) Monitor
c) CPU
d) Printer

What is the function of the computer’s clock speed?
a) It determines how much storage the computer has
b) It determines the speed at which the CPU processes instructions
c) It manages the data flow between devices
d) It stores operating system files

What is the role of the RAM in a computer’s performance?
a) It permanently stores data
b) It temporarily stores data to be accessed quickly
c) It manages the operating system
d) It connects the CPU with peripherals

What does the GPU (Graphics Processing Unit) do?
a) Stores data
b) Executes instructions
c) Handles graphical computations and rendering
d) Manages network connections

What does an optical drive (CD/DVD) do?
a) Stores volatile data
b) Reads and writes data on optical discs
c) Displays graphics on a screen
d) Sends data over a network

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