What is the size of an IPv4 address in bits? MCQ with Answer and Explanation

Question

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What is the size of an IPv4 address in bits?

A. 32

B. 64

C. 16

D. 128

Answer: Option A

Solution (By JKSSB Mock Tests)

IPv4 addresses are 32 bits long, typically expressed in dotted decimal.

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Question #1

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Which networking tool provides direct interactive configuration diagnostics by resolving alphanumeric website queries to their corresponding numerical IP records?

A. IPCONFIG

B. PING

C. NSLOOKUP

D. TRACERT

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Correct Answer: Option C

Explanation:
The nslookup command queries DNS servers to look up or verify the IP address associated with a particular domain name.

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Question #2

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Which IPv4 address class range is explicitly reserved for multicast distribution groups rather than individual node assignments?

A. Class D

B. Class A

C. Class B

D. Class E

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Correct Answer: Option A

Explanation:
Class D IP addresses span from 224.0.0.0 to 239.255.255.255 and are reserved worldwide for multicasting workflows.

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Question #3

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What is the purpose of a cable tester in networking?

A. To connect networks

B. To assign IP addresses

C. To measure network speed

D. To verify cable continuity and wiring

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Correct Answer: Option D

Explanation:
Cable testers check for opens, shorts, and proper pinouts in network cables.

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