What is the decimal equivalent of octal 72? MCQ with Answer and Explanation

What is the decimal equivalent of octal 72?

A. 60

B. 61

C. 58

D. 59

Answer: Option C

Octal 72 = 7*8 + 2 = 56+2 = 58.

This question belongs to: Computer Computer Fundamentals

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Question #1 Report Error

What is the binary equivalent of hexadecimal 3A?

A. 101010

B. 111011

C. 110010

D. 111010

Correct Answer: Option D

Explanation:
3A = 3 (0011) and A (1010) => 00111010 = 111010 (without leading zeros).

This question belongs to: Computer Computer Fundamentals

Question #2 Report Error

A type of memory whose contents are permanently etched during manufacturing and cannot be easily rewritten or wiped when power is turned off is:

A. Virtual Memory

B. RAM

C. ROM

D. Cache Memory

Correct Answer: Option C

Explanation:
ROM (Read-Only Memory) is non-volatile; its embedded code remains safe and intact even when the machine loses power completely.

This question belongs to: Computer Computer Fundamentals

Question #3 Report Error

What is the purpose of the power-on self-test (POST)?

A. Loads the OS

B. Checks hardware functionality

C. Checks for viruses

D. Installs drivers

Correct Answer: Option B

Explanation:
POST runs diagnostics on hardware like RAM and drives to ensure they work before booting.

This question belongs to: Computer Computer Fundamentals