Chapter 1 Computer System — Online MCQ Test
INFORMATICS PRACTICES · Grade 11 · CBSE(NCERT)
Practice Chapter 1 Computer System with a free chapter-wise online MCQ test.
This chapter covers: Provides a comprehensive overview of computer architecture and functioning. Covers the evolution of computers CPU memory (RAM and ROM) input and output devices data processing stor....
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter 1 Computer System — Important Questions & Answers
Which of the following is the main processing unit of a computer?
- A. RAM
- B. CPU
- C. Hard disk
- D. Keyboard
Answer: B. CPU
The CPU (Central Processing Unit) performs most of the processing and control functions of the computer.
The CPU (Central Processing Unit) performs most of the processing and control functions of the computer.
Which memory is volatile in nature?
- A. ROM
- B. Hard disk
- C. RAM
- D. CD-ROM
Answer: C. RAM
RAM is volatile memory, so its contents are lost when the power is turned off.
RAM is volatile memory, so its contents are lost when the power is turned off.
What does ROM stand for?
- A. Read Only Memory
- B. Random Only Memory
- C. Read Output Memory
- D. Run Only Memory
Answer: A. Read Only Memory
ROM stands for Read Only Memory and stores permanent instructions required for booting and basic operations.
ROM stands for Read Only Memory and stores permanent instructions required for booting and basic operations.
Which of the following is an input device?
- A. Monitor
- B. Printer
- C. Mouse
- D. Speaker
Answer: C. Mouse
A mouse is used to enter data and commands into the computer, so it is an input device.
A mouse is used to enter data and commands into the computer, so it is an input device.
Which computer generation used vacuum tubes?
- A. First generation
- B. Second generation
- C. Third generation
- D. Fourth generation
Answer: A. First generation
First generation computers used vacuum tubes as their main electronic component.
First generation computers used vacuum tubes as their main electronic component.
Which of the following is NOT an example of secondary storage?
- A. Hard disk
- B. SSD
- C. RAM
- D. Pen drive
Answer: C. RAM
RAM is primary memory, not secondary storage. Hard disk, SSD, and pen drive are all secondary storage devices.
RAM is primary memory, not secondary storage. Hard disk, SSD, and pen drive are all secondary storage devices.
A computer is called a 'data processor' because it:
- A. stores only images
- B. accepts data, processes it, and produces information
- C. works without software
- D. can only perform calculations
Answer: B. accepts data, processes it, and produces information
A computer takes raw data as input, processes it, and outputs meaningful information.
A computer takes raw data as input, processes it, and outputs meaningful information.
Which option correctly matches the device with its category?
- A. Printer — Input device
- B. Keyboard — Output device
- C. Mouse — Input device
- D. Monitor — Storage device
Answer: C. Mouse — Input device
A mouse sends user actions to the computer, so it is an input device. The other pairings are incorrect.
A mouse sends user actions to the computer, so it is an input device. The other pairings are incorrect.
During booting, the computer first uses information stored in:
- A. RAM, because it is permanent
- B. ROM, because it contains startup instructions
- C. Hard disk, because it is volatile
- D. Monitor, because it displays the BIOS
Answer: B. ROM, because it contains startup instructions
The startup instructions required for booting are stored in ROM or firmware memory.
The startup instructions required for booting are stored in ROM or firmware memory.
Which of the following is the most appropriate classification for antivirus software?
- A. System software
- B. Utility software under system software
- C. Hardware
- D. Input device
Answer: B. Utility software under system software
Antivirus software is a utility program that helps maintain and protect the computer system, so it falls under system software.
Antivirus software is a utility program that helps maintain and protect the computer system, so it falls under system software.