What is the purpose of a VLAN trunk? MCQ with Answer and Explanation

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What is the purpose of a VLAN trunk?

A. To filter traffic

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

C. To connect to the Internet

D. To assign IP addresses

Answer: Option B

Solution (By JKSSB Mock Tests)

Trunk links carry tagged frames for multiple VLANs between switches.

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Question #1

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What is the default subnet mask for a standard Class A IP address under classic classful routing rules?

A. 255.255.255.0

B. 255.0.0.0

C. 255.255.255.255

D. 255.255.0.0

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Correct Answer: Option B

Explanation:
Class A networks allocate the first octet to the network identity, mapping to a default subnet mask of 255.0.0.0 (or /8).

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Question #2

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What is the purpose of an SNMP (Simple Network Management Protocol)?

A. To transfer files

B. To assign IP addresses

C. To route packets

D. To manage and monitor network devices

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Correct Answer: Option D

Explanation:
SNMP is used for network management, monitoring devices like routers and switches.

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Question #3

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Which network topology layout links every node to a single shared central communication line known as the network backbone?

A. Bus Topology

B. Ring Topology

C. Star Topology

D. Mesh Topology

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Correct Answer: Option A

Explanation:
A bus topology connects all devices to a single shared central cable, often called the backbone line.

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