What is a subnet? MCQ with Answer and Explanation

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What is a subnet?

A. A VLAN

B. A physical network segment

C. A type of router

D. A logical subdivision of an IP network

Answer: Option D

Solution (By JKSSB Mock Tests)

Subnetting divides a large network into smaller logical subnetworks.

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Question #1

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What layer of the OSI model does a traditional hardware Router operate within to make path-forwarding decisions?

A. Network Layer (Layer 3)

B. Physical Layer (Layer 1)

C. Transport Layer (Layer 4)

D. Data Link Layer (Layer 2)

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Correct Answer: Option A

Explanation:
Routers operate at Layer 3 (Network Layer), analyzing logical IP addresses to direct data packets across networks.

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Question #2

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What is the loopback address in IPv6?

A. Both A and C

B. 127.0.0.1

C. 0:0:0:0:0:0:0:1

D. ::1

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Correct Answer: Option A

Explanation:
In IPv6, loopback is ::1 (which is 0:0:0:0:0:0:0:1).

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Question #3

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What does the abbreviation WAN stand for?

A. Wireless Area Network

B. Web Area Network

C. Wide Area Network

D. Worldwide Area Network

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Correct Answer: Option C

Explanation:
WAN stands for Wide Area Network, covering a large geographic area.

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