What is a network gateway? MCQ with Answer and Explanation

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What is a network gateway?

A. A device that amplifies signals

B. A device that connects computers in a LAN

C. A device that connects two different networks with different protocols

D. A device that stores web pages

Answer: Option C

Solution (By JKSSB Mock Tests)

A gateway acts as an entrance to another network, often translating protocols.

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Question #1

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What condition occurs on a shared bus network if multiple stations attempt to transmit data frames over the backbone line simultaneously?

A. MAC address duplication

B. Automatic loopback routing

C. Signal termination bypass

D. Data Collision

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Correct Answer: Option D

Explanation:
Data collisions occur when multiple devices transmit signals over a shared electrical medium simultaneously, garbling the data frames.

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Question #2

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What is the size of an IPv6 address in bits?

A. 32

B. 128

C. 256

D. 64

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Correct Answer: Option B

Explanation:
IPv6 addresses are 128 bits long, providing a huge address space.

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Question #3

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Which hardware device works at Layer 3 of the OSI model, tracking network path metrics to route packets across separate networks?

A. Layer 3 Router

B. Passive Hub Array

C. Layer 2 Bridge

D. Layer 1 Repeater

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Correct Answer: Option A

Explanation:
Routers operate at the Network Layer (Layer 3), managing data routing across separate subnets based on logical destination IP addresses.

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