What is the primary function of a switch's MAC address table? MCQ with Answer and Explanation

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What is the primary function of a switch's MAC address table?

A. To store routing information

B. To store IP addresses

C. To store mappings between MAC addresses and ports

D. To store domain names

Answer: Option C

Solution (By JKSSB Mock Tests)

A switch's MAC address table learns which MAC address is associated with which port for efficient forwarding.

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Question #1

Which layer of the OSI model is responsible for establishing, managing, and terminating sessions?

A. Transport layer

B. Session layer

C. Presentation layer

D. Application layer

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Correct Answer: Option B

Explanation:
The session layer (layer 5) manages communication sessions.

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Question #2

Which of the following is a private IP address belonging strictly to the Class B network registry block?

A. 192.168.10.5

B. 172.16.50.4

C. 224.0.0.1

D. 10.150.1.1

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Correct Answer: Option B

Explanation:
The private Class B IP range spans from 172.16.0.0 to 172.31.255.255, as defined by RFC 1918.

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Question #3

What is the subnet mask for a Class B network?

A. 255.255.255.255

B. 255.255.0.0

C. 255.0.0.0

D. 255.255.255.0

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Correct Answer: Option B

Explanation:
Class B default subnet mask is 255.255.0.0 (16 bits for network).

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