Which device uses an internal bridging engine to isolate network traffic by individual ports, delivering full-duplex channels to each connected node? MCQ with Answer and Explanation

Question

Which device uses an internal bridging engine to isolate network traffic by individual ports, delivering full-duplex channels to each connected node?

A. Layer 1 Hub

B. Analog Modem

C. Layer 2 Switch

D. Signal Terminator

Answer: Option C

Solution (By JKSSB Mock Tests)

A switch operates at Layer 2 to segment a network, providing dedicated, full-duplex communication channels for each individual port.

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What is a frame in networking?

A. Data unit at the data link layer

B. Data unit at the application layer

C. Data unit at the transport layer

D. Data unit at the network layer

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Correct Answer: Option A

Explanation:
A frame is the layer 2 PDU (Protocol Data Unit), encapsulating the packet with MAC addresses.

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Question #2

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What does the acronym NAT stand for?

A. Network Address Translation

B. Network Access Translation

C. Network Address Tracking

D. Node Address Translation

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Correct Answer: Option A

Explanation:
NAT maps private IP addresses to a public IP for internet access.

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Question #3

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What is the maximum number of hosts in a Class B network?

A. 65,534

B. 16,777,214

C. 254

D. 65,536

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Correct Answer: Option A

Explanation:
Class B has 16 host bits, giving 2^16 - 2 = 65,534 usable hosts.

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