What is the purpose of a default gateway? MCQ with Answer and Explanation

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What is the purpose of a default gateway?

A. To translate domain names to IP addresses

B. To provide security by filtering packets

C. To assign IP addresses dynamically

D. To route traffic from a local network to other networks

Answer: Option D

Solution (By JKSSB Mock Tests)

A default gateway is a router that connects a local network to external networks, forwarding traffic when the destination is not local.

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Practice More Computer Networking Questions

Question #1

What is the size of an IPv4 address in bits?

A. 128

B. 32

C. 16

D. 64

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Correct Answer: Option B

Explanation:
IPv4 addresses are 32 bits long, typically expressed in dotted decimal.

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Question #2

Which device is used to convert digital signals to analog for transmission over a cable network?

A. Switch

B. Router

C. DSL modem

D. Cable modem

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Correct Answer: Option D

Explanation:
A cable modem is used for cable internet, converting digital data for transmission over coaxial cable.

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Question #3

Which address block represents the standard 32-bit IPv4 multicast address group space under traditional classful sorting hierarchies?

A. 0.0.0.0 to 127.255.255.255

B. 224.0.0.0 to 239.255.255.255

C. 240.0.0.0 to 255.255.255.255

D. 192.168.0.0 to 192.168.255.255

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Correct Answer: Option B

Explanation:
Class D addresses (224.0.0.0 to 239.255.255.255) are reserved globally for multicast traffic targeting specific groups of devices.

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