Which protocol is used to prevent loops in a switched network? MCQ with Answer and Explanation

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Which protocol is used to prevent loops in a switched network?

A. STP (Spanning Tree Protocol)

B. BGP

C. OSPF

D. RIP

Answer: Option A

Solution (By JKSSB Mock Tests)

Spanning Tree Protocol (STP) prevents loops in networks with redundant links.

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Practice More Computer Networking Questions

Question #1

Which of the following is a remote access protocol?

A. FTP

B. Telnet

C. DNS

D. SMTP

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Correct Answer: Option B

Explanation:
Telnet is a remote terminal protocol (though insecure; SSH is preferred).

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Question #2

Which protocol is used to manage multicast group memberships?

A. ARP

B. IGMP

C. DHCP

D. ICMP

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Correct Answer: Option B

Explanation:
IGMP (Internet Group Management Protocol) manages multicast group memberships.

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Question #3

Which networking device operates at the Data Link Layer (Layer 2) and uses MAC addresses to filter and forward data packets only to the specific destination port?

A. Switch

B. Repeater

C. Router

D. Hub

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Correct Answer: Option A

Explanation:
A network switch is an intelligent Layer 2 device that learns MAC addresses and routes traffic exclusively to the intended device, unlike a hub which broadcasts to all ports.

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