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The required resources for communication between end systems are reserved for the duration of the session between end systems in ________ method.

(a) Packet switching

(b) Circuit switching

(c) Line switching

(d) Frequency switching

I had been asked this question in an online interview.

Question is from Packet Switching & Circuit Switching topic in chapter Security & Physical Layer of Computer Network

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The correct choice is (b) Circuit switching

The best I can explain: In circuit switching, a physical path between the sender and receiver is established. This path is maintained until the connection is needed. Circuit switching is implemented in the Physical layer and is used in telephonic systems.

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