Which topology uses a single communication line to which all devices are attached? MCQ with Answer and Explanation

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Which topology uses a single communication line to which all devices are attached?

A. Star

B. Ring

C. Bus

D. Mesh

Answer: Option C

Solution (By JKSSB Mock Tests)

Bus topology uses a single cable (backbone) to which all devices connect.

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Practice More Computer Networking Questions

Question #1

What is a default gateway in a network?

A. The device that routes traffic to other networks

B. The network switch

C. The primary DNS server

D. The DHCP server

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Correct Answer: Option A

Explanation:
The default gateway is a router that connects the local network to external networks.

This question belongs to: Computer Computer Networking

Question #2

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

A. To indicate packet length

B. To prioritize packets

C. To prevent packets from looping indefinitely

D. To encrypt the packet

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Correct Answer: Option C

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

Which device functions exclusively at the physical layer of the OSI model to amplify or regenerate weak electrical or optical network signals over extended distances?

A. Router

B. Bridge

C. Repeater

D. Gateway

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Correct Answer: Option C

Explanation:
A repeater acts at Layer 1 to boost incoming electrical or optical signals, counteracting signal attenuation across long cable runs.

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