Computer Fundamentals MCQ - Section 1

Q1 Easy

What is the full form of CPU?

✅ Correct Answer: A — Central Processing Unit

💡 Explanation: CPU stands for Central Processing Unit. It is the primary component of a computer that executes instructions.

Q2 Easy

Which of the following is NOT an input device?

✅ Correct Answer: C — Monitor

💡 Explanation: Monitor is an output device. It displays information to the user. Keyboard, Mouse, and Scanner are all input devices.

Q3 Easy

RAM stands for?

✅ Correct Answer: B — Random Access Memory

💡 Explanation: RAM stands for Random Access Memory. It is the primary volatile memory of a computer.

Q4 Medium

Which generation of computer used transistors?

✅ Correct Answer: B — Second

💡 Explanation: Second generation computers (1956-1963) used transistors. First generation used vacuum tubes.

Q5 Easy

The smallest unit of data in a computer is:

✅ Correct Answer: C — Bit

💡 Explanation: A bit (binary digit) is the smallest unit of data in a computer. It can hold a value of 0 or 1.

Q6 Easy

1 Kilobyte (KB) is equal to how many bytes?

✅ Correct Answer: C — 1024

💡 Explanation: 1 Kilobyte = 1024 bytes. This is because computers use binary (base-2) number system, so 2^10 = 1024.

Q7 Medium

Which of the following is a volatile memory?

✅ Correct Answer: B — RAM

💡 Explanation: RAM (Random Access Memory) is volatile — it loses its content when power is turned off.

Q8 Medium

What does BIOS stand for?

✅ Correct Answer: A — Basic Input Output System

💡 Explanation: BIOS stands for Basic Input Output System. It is firmware that initializes hardware during the booting process.

Q9 Easy

Which port is commonly used to connect a printer to a computer?

✅ Correct Answer: B — USB

💡 Explanation: USB (Universal Serial Bus) port is the most commonly used port to connect printers to computers today.

Q10 Easy

Which of the following is an example of an operating system?

✅ Correct Answer: C — Ubuntu Linux

💡 Explanation: Ubuntu Linux is an operating system. Chrome, Excel, and Photoshop are application software.

Computer Fundamentals