What is the binary equivalent of the subnet mask 255.255.255.0? MCQ with Answer and Explanation

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What is the binary equivalent of the subnet mask 255.255.255.0?

A. 00000000.00000000.00000000.11111111

B. 11111111.11111111.00000000.00000000

C. 11111111.11111111.11111111.00000000

D. 11111111.00000000.00000000.00000000

Answer: Option C

Solution (By JKSSB Mock Tests)

255.255.255.0 in binary is 24 ones followed by 8 zeros.

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Question #1

Which IP address class has the first bit as 0?

A. Class D

B. Class A

C. Class C

D. Class B

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Correct Answer: Option B

Explanation:
Class A addresses have the first bit as 0, ranging from 0.0.0.0 to 127.255.255.255.

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Question #2

Which device can be used to extend the length of a network segment by regenerating the signal?

A. Router

B. Repeater

C. Switch

D. Gateway

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Correct Answer: Option B

Explanation:
A repeater amplifies and regenerates signals to extend the distance of a network.

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Question #3

Which of the following is a multi-point topology?

A. Bus

B. All of the above

C. Ring

D. Star

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Correct Answer: Option B

Explanation:
All these topologies have multiple devices sharing a medium or central point.

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