Which protocol is used to automatically assign IP addresses to devices in a network? MCQ with Answer and Explanation

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Which protocol is used to automatically assign IP addresses to devices in a network?

A. ICMP

B. DNS

C. DHCP

D. ARP

Answer: Option C

Solution (By JKSSB Mock Tests)

DHCP (Dynamic Host Configuration Protocol) dynamically assigns IP addresses and other network parameters.

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Question #1

What is the function of a firewall in a network?

A. To route packets

B. To assign IP addresses

C. To allow or block network traffic based on rules

D. To resolve domain names

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Correct Answer: Option C

Explanation:
A firewall filters network traffic based on security rules to protect the network.

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Question #2

What layer of the OSI model does an intelligent network switch use to read hardware MAC addresses and make data forwarding choices?

A. Network Layer (Layer 3)

B. Application Layer (Layer 7)

C. Physical Layer (Layer 1)

D. Data Link Layer (Layer 2)

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Correct Answer: Option D

Explanation:
Switches operate at the Data Link Layer (Layer 2), using hardware MAC addresses to forward data frames across local network segments.

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Question #3

What does the term broadcast domain mean?

A. A set of devices connected to a hub

B. A set of devices that share the same IP network

C. A set of devices that can receive broadcast frames

D. A set of devices that can collide

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Correct Answer: Option C

Explanation:
A broadcast domain is a logical division where a broadcast frame sent by one device can reach all other devices.

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