Which device connects a network to the Internet and often includes firewall functionality? MCQ with Answer and Explanation

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Which device connects a network to the Internet and often includes firewall functionality?

A. Hub

B. Switch

C. Bridge

D. Router

Answer: Option D

Solution (By JKSSB Mock Tests)

A router often connects a local network to the internet and may include security features like firewalls.

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Question #1

What is the role of a DHCP server?

A. To resolve domain names

B. To assign IP addresses dynamically

C. To filter traffic

D. To route packets

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Correct Answer: Option B

Explanation:
DHCP server automatically assigns IP addresses and other network configuration to clients.

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Question #2

Which class of IP address has the first octet ranging from 128 to 191?

A. Class C

B. Class D

C. Class A

D. Class B

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Correct Answer: Option D

Explanation:
Class B addresses have first octet between 128 and 191.

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Question #3

What is a subnet?

A. A type of router

B. A VLAN

C. A physical network segment

D. A logical subdivision of an IP network

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Correct Answer: Option D

Explanation:
Subnetting divides a large network into smaller logical subnetworks.

This question belongs to: Computer Computer Networking

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