Chapter Exam

Chapter 1: Computer System — Online MCQ Test

Q: Which part of the CPU performs arithmetic and logical operations?

Answer: B. Arithmetic Logic Unit — The Arithmetic Logic Unit (ALU) performs calculations and logical comparisons. The Control Unit only directs and coordinates operations.

Q: Fill in the blank: ________ is a volatile primary memory used to store data and instructions currently being processed by the CPU.

Answer: C. RAM — RAM is volatile memory, meaning its contents are lost when power is switched off. It stores data and instructions needed during processing.

Q: A teacher scans printed answer sheets to convert them into digital images. Which type of device is primarily being used?

Answer: A. Input device — A scanner sends data from the physical world into the computer system. Therefore, it is classified as an input device.

Q: Which of the following correctly arranges memory types from fastest to slowest access speed?

Answer: B. Registers → Cache → RAM → Secondary storage — Registers are the fastest memory locations inside the CPU, followed by cache, then RAM, and then secondary storage. This order reflects the memory hierarchy.

Q: Which statement is NOT correct about computer memory?

Answer: C. Cache memory is slower than secondary storage — Cache memory is faster than RAM and much faster than secondary storage. Therefore, saying cache is slower than secondary storage is incorrect.

COMPUTER SCIENCE · Grade 11 · CBSE(NCERT)

Practice Chapter 1: Computer System with a free chapter-wise online MCQ test for CBSE(NCERT) Grade 11 COMPUTER SCIENCE. This chapter covers: Computer system hardware software CPU memory primary memory secondary memory input devices output devices operating system application software computer architecture data processin.... AI-generated questions from basic to board-exam level, with instant results and explanations.

Questions

20m

Time Limit

Attempts Left

10 random questions from this chapter (mixed difficulty)
Questions you've seen before won't repeat until the pool resets
You have 20 minutes — exam auto-submits when time is up
Maximum 3 attempts per chapter
Results and explanations shown immediately after submission

New here? Register free — includes 3 free chapter exams.

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

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

Which part of the CPU performs arithmetic and logical operations?

A. Control Unit
B. Arithmetic Logic Unit ✓
C. Primary Memory
D. Input Unit

Answer: B. Arithmetic Logic Unit
The Arithmetic Logic Unit (ALU) performs calculations and logical comparisons. The Control Unit only directs and coordinates operations.

Fill in the blank: ________ is a volatile primary memory used to store data and instructions currently being processed by the CPU.

A. ROM
B. Hard disk
C. RAM ✓
D. DVD

Answer: C. RAM
RAM is volatile memory, meaning its contents are lost when power is switched off. It stores data and instructions needed during processing.

A teacher scans printed answer sheets to convert them into digital images. Which type of device is primarily being used?

A. Input device ✓
B. Output device
C. Processing device
D. Storage device

Answer: A. Input device
A scanner sends data from the physical world into the computer system. Therefore, it is classified as an input device.

Which of the following correctly arranges memory types from fastest to slowest access speed?

A. Hard disk → RAM → Cache → Registers
B. Registers → Cache → RAM → Secondary storage ✓
C. RAM → Registers → Secondary storage → Cache
D. Cache → Hard disk → Registers → RAM

Answer: B. Registers → Cache → RAM → Secondary storage
Registers are the fastest memory locations inside the CPU, followed by cache, then RAM, and then secondary storage. This order reflects the memory hierarchy.

Which statement is NOT correct about computer memory?

A. RAM is volatile and stores data temporarily
B. ROM usually stores instructions needed to start the computer
C. Cache memory is slower than secondary storage ✓
D. Secondary memory is non-volatile and used for long-term storage

Answer: C. Cache memory is slower than secondary storage
Cache memory is faster than RAM and much faster than secondary storage. Therefore, saying cache is slower than secondary storage is incorrect.