What is the decimal equivalent of hexadecimal FF? MCQ with Answer and Explanation

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What is the decimal equivalent of hexadecimal FF?

A. 253

B. 254

C. 256

D. 255

Answer: Option D

Solution (By JKSSB Mock Tests)

FF = 15*16 + 15 = 255.

This question belongs to: Computer Computer Fundamentals

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Question #1

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What is the full form of ALU?

A. Array Logic Unit

B. Arithmetic Logic Unit

C. Arithmetic Local Unit

D. Access Logic Unit

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Correct Answer: Option B

Explanation:
ALU stands for Arithmetic Logic Unit, the part of the CPU that performs arithmetic and logical operations.

This question belongs to: Computer Computer Fundamentals

Question #2

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Which section of the central processing unit is specifically designed to perform comparisons, such as determining if one variable is equal to another?

A. Input Unit

B. Logic Unit

C. Storage Unit

D. Control Unit

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Correct Answer: Option B

Explanation:
The Logic Unit (part of the ALU) handles logical operations, conditional statements, and relational comparisons (AND, OR, NOT, , =).

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Question #3

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Which of the following is a type of computer based on functionality?

A. Mainframe

B. Minicomputer

C. Analog

D. Desktop

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Correct Answer: Option C

Explanation:
Analog, digital, and hybrid are based on functionality (data processing method).

This question belongs to: Computer Computer Fundamentals

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