What is the role of a network bridge? MCQ with Answer and Explanation

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What is the role of a network bridge?

A. To amplify signals

B. To assign IP addresses

C. To connect two network segments and filter frames

D. To connect to the Internet

Answer: Option C

Solution (By JKSSB Mock Tests)

Bridges connect segments and filter traffic to reduce collisions.

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Question #1

What is the main difference between a bridge and a switch?

A. Bridge works at layer 3; switch at layer 2

B. Bridge has more ports than a switch

C. No difference

D. Switch is a multiport bridge

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Correct Answer: Option D

Explanation:
A switch is essentially a multiport bridge with hardware-based forwarding.

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Question #2

What is the primary role of a subnet mask when paired with an active IPv4 address value?

A. To provide physical encryption layers over frame headers.

B. To explicitly delineate the network routing segment from the unique host identifier segment.

C. To toggle networks between half and full-duplex transmission modes.

D. To resolve hardware MAC pointers to domain paths.

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Correct Answer: Option B

Explanation:
The subnet mask uses binary bit masking to indicate which part of an IP address refers to the network identity and which part refers to the host device.

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Question #3

What condition occurs on a shared bus network if multiple stations attempt to transmit data frames over the backbone line simultaneously?

A. Data Collision

B. Signal termination bypass

C. MAC address duplication

D. Automatic loopback routing

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Correct Answer: Option A

Explanation:
Data collisions occur when multiple devices transmit signals over a shared electrical medium simultaneously, garbling the data frames.

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