What is the purpose of a cable tester in networking? MCQ with Answer and Explanation

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What is the purpose of a cable tester in networking?

A. To verify cable continuity and wiring

B. To connect networks

C. To measure network speed

D. To assign IP addresses

Answer: Option A

Solution (By JKSSB Mock Tests)

Cable testers check for opens, shorts, and proper pinouts in network cables.

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Question #1

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Which device uses an internal bridging engine to isolate network traffic by individual ports, delivering full-duplex channels to each connected node?

A. Layer 1 Hub

B. Analog Modem

C. Layer 2 Switch

D. Signal Terminator

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Correct Answer: Option C

Explanation:
A switch operates at Layer 2 to segment a network, providing dedicated, full-duplex communication channels for each individual port.

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Question #2

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What is the purpose of the TTL (Time-to-Live) field in an IP packet?

A. To prioritize packets

B. To indicate packet length

C. To encrypt the packet

D. To prevent packets from looping indefinitely

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Correct Answer: Option D

Explanation:
TTL limits the lifespan of a packet; each hop decrements it, and when it reaches 0, the packet is discarded.

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Question #3

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What is a collision domain?

A. A domain where IP addresses are assigned

B. A group of routers

C. A broadcast domain

D. A set of network devices where collisions can occur

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Correct Answer: Option D

Explanation:
A collision domain is a network segment where packets can collide with each other if transmitted simultaneously.

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