Chapter Exam

Chapter 1 Computer System — Online MCQ Test

Q: Which of the following is the main processing unit of a computer?

Answer: B. CPU — The CPU (Central Processing Unit) performs most of the processing and control functions of the computer.

Q: Which memory is volatile in nature?

Answer: C. RAM — RAM is volatile memory, so its contents are lost when the power is turned off.

Q: What does ROM stand for?

Answer: A. Read Only Memory — ROM stands for Read Only Memory and stores permanent instructions required for booting and basic operations.

Q: Which of the following is an input device?

Answer: C. Mouse — A mouse is used to enter data and commands into the computer, so it is an input device.

Q: Which computer generation used vacuum tubes?

Answer: A. First generation — First generation computers used vacuum tubes as their main electronic component.

Q: Which of the following is NOT an example of secondary storage?

Answer: C. RAM — RAM is primary memory, not secondary storage. Hard disk, SSD, and pen drive are all secondary storage devices.

Q: Which option correctly matches the device with its category?

Answer: C. Mouse — Input device — A mouse sends user actions to the computer, so it is an input device. The other pairings are incorrect.

Q: During booting, the computer first uses information stored in:

Answer: B. ROM, because it contains startup instructions — The startup instructions required for booting are stored in ROM or firmware memory.

Q: Which of the following is the most appropriate classification for antivirus software?

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.

INFORMATICS PRACTICES · Grade 11 · CBSE(NCERT)

Practice Chapter 1 Computer System with a free chapter-wise online MCQ test for CBSE(NCERT) Grade 11 INFORMATICS PRACTICES. 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.

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Chapter 1 Computer System — Important Questions & Answers (FAQ)

Frequently asked questions from CBSE(NCERT) Grade 11 INFORMATICS PRACTICES — Chapter 1 Computer System, with answers and explanations. These are sample questions; the exam has its own separate question set.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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