What is the binary equivalent of decimal 20? MCQ with Answer and Explanation

Question
What is the binary equivalent of decimal 20?
A. 10100
B. 11100
C. 10010
D. 11000
Answer: Option A
Solution (By JKSSB Mock Tests)
20 in binary is 10100 (16+4).
This question belongs to: Computer Computer Fundamentals
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Practice More Computer Fundamentals Questions

Question #1
Which of the following is a common input device for playing games?
A. Plotter
B. Printer
C. Speaker
D. Joystick
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Correct Answer: Option D

Explanation:
A joystick is an input device commonly used for gaming and simulations.
This question belongs to: Computer Computer Fundamentals
Question #2
What is the significance of von Neumann architecture?
A. It eliminates the need for CPU
B. It is used only in mainframes
C. It uses a single memory for both data and instructions
D. It uses separate memory for data and instructions
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Correct Answer: Option C

Explanation:
The von Neumann architecture uses a single shared memory for both data and instructions, which is the basis for most modern computers.
This question belongs to: Computer Computer Fundamentals
Question #3
Which specific component inside the Central Processing Unit (CPU) is responsible for interpreting instructions and directing the flow of data across the system?
A. Secondary Storage Unit
B. Control Unit
C. Arithmetic Logic Unit
D. Primary Memory Unit
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Correct Answer: Option B

Explanation:
The Control Unit (CU) acts as the supervisor, fetching, decoding, and managing the execution of instructions by sending timing signals.
This question belongs to: Computer Computer Fundamentals
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