What is the full form of LAN in computer networking? MCQ with Answer and Explanation

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What is the full form of LAN in computer networking?

A. Local Area Network

B. Link Area Network

C. Local Access Network

D. Large Area Network

Answer: Option A

Solution (By JKSSB Mock Tests)

LAN stands for Local Area Network, which connects computers within a limited geographical area.

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Question #1

What is the loopback address in IPv6?

A. Both A and C

B. 0:0:0:0:0:0:0:1

C. ::1

D. 127.0.0.1

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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 #2

What is the purpose of a VLAN trunk?

A. To filter traffic

B. To assign IP addresses

C. To carry traffic for multiple VLANs over a single link

D. To connect to the Internet

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Correct Answer: Option C

Explanation:
Trunk links carry tagged frames for multiple VLANs between switches.

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Question #3

What is the purpose of a network Subnet Mask configuration parameter?

A. To provide hardware encryption layers over frame headers.

B. To resolve hardware MAC addresses to web domain paths.

C. To switch data links between half and full-duplex transmission modes.

D. To separate an IP address into its network identification segment and host identification segment.

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Correct Answer: Option D

Explanation:
A subnet mask uses binary bit masking to define which part of an IP address indicates the network identity and which part indicates the specific host device.

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