In today’s digital world, having a strong understanding of basic computer concepts is essential for students, professionals, and competitive exam aspirants. Whether you are preparing for exams like SSC, Banking, Railways, or simply want to improve your computer knowledge, practicing multiple-choice questions (MCQs) is one of the most effective ways to test and strengthen your understanding.
This quiz consists of 20 carefully selected questions covering fundamental topics such as computer basics, memory, input/output devices, operating systems, and data processing. Each question is designed not only to check your knowledge but also to challenge your concepts with tricky and exam-oriented options.
Attempt all the questions honestly and try to understand the explanations provided after each answer. This will help you identify your weak areas and improve accuracy in real exams.
Basic Computer Quiz Questions with Answers
Let’s test your computer knowledge and boost your preparation!
What is a computer?
A. A machine used only for typing documents.
B. An electronic device that processes data into information.
C. A device used only for internet browsing.
D. A machine that stores electricity.
An electronic device that processes data into information.
A computer is an electronic device that accepts input, processes data according to instructions, and produces meaningful output (information).
Which component is known as the “brain” of the computer?
A. Memory Unit
B. Control Unit
C. Central Processing Unit (CPU)
D. Arithmetic Logic Unit (ALU)
Central Processing Unit (CPU)
The CPU controls all operations of the computer.
Which of the following is volatile memory?
A. ROM
B. Hard Disk
C. RAM
D. CD-ROM
RAM
RAM loses data when power is off.
Which of the following is an example of system software?
A. MS Excel
B. Google Chrome
C. Adobe Photoshop
D. Windows Operating System
Windows Operating System
Windows is system software.
What is the primary function of an operating system?
A. To create documents
B. To browse the internet
C. To perform calculations
D. To manage hardware and software resources
To manage hardware and software resources
OS manages system resources.
Which device is used to convert hard copy into soft copy?
A. Scanner
B. Printer
C. Plotter
D. Monitor
Scanner
Scanner converts physical to digital.
Which of the following is not an input device?
A. Keyboard
B. Mouse
C. Monitor
D. Scanner
Monitor
Monitor is output device.
Which of the following is not a characteristic of a computer?
A. Speed
B. Accuracy
C. Automation
D. Intelligence
Intelligence
Computers do not have intelligence.
Which memory is fastest and volatile?
A. RAM
B. Cache Memory
C. ROM
D. Hard Disk
Cache Memory
Cache is fastest volatile memory.
Which statement is TRUE about ROM?
A. It is volatile
B. Data is lost
C. It stores permanent instructions
D. Temporary storage
It stores permanent instructions
ROM stores permanent data.
What happens during booting?
A. Files deleted
B. OS loaded into RAM
C. Hardware removed
D. None
OS loaded into RAM
Booting loads OS.
Which device is both input and output?
A. Touchscreen
B. Scanner
C. Printer
D. Monitor
Touchscreen
Touchscreen works both ways.
Which of the following is an example of secondary storage?
A. RAM
B. Cache
C. Hard Disk
D. None
Hard Disk
Hard disk stores data permanently.
What is the smallest unit of data?
A. Bit
B. Byte
C. Nibble
D. Word
Bit
Bit is smallest unit.
Which of the following is not an OS?
A. Linux
B. Windows
C. macOS
D. MS Word
MS Word
MS Word is application software.
Which of the following is an example of firmware?
A. BIOS
B. MS Excel
C. Windows
D. Chrome
BIOS
BIOS is firmware.
Which of the following component interprets instructions?
A. ALU
B. Control Unit
C. RAM
D. Cache
Control Unit
Control Unit fetches and interprets instructions.
Which of the following is fastest storage?
A. Hard disk
B. ROM
C. SSD
D. Cache
Cache
Cache is fastest among all storage types.
Which is fastest among these?
A. Register
B. Cache
C. RAM
D. SSD
Register
Register is fastest memory.
Which of the following devices gives soft copy output?
