Which of the following statement(s) is/are true regarding switching techniques…
2021
Which of the following statement(s) is/are true regarding switching techniques in Data communication? Statements: I. In circuit switching a dedicated path is identified between the sender and the receiver. II. In packet switching each information to be transmitted between sender and receiver is broken down into smaller packets.
- A.
Only I
- B.
Only II
- C.
Both I and II
- D.
Neither I nor II
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Correct answer: C
Answer: Both statements are true.
Statement I: In circuit switching, a dedicated communication path is established between the sender and the receiver for the duration of the session. Resources along that path may be reserved, ensuring a constant connection (example: traditional circuit-switched telephone networks).
Statement II: In packet switching, the information to be transmitted is divided into smaller packets. Each packet carries header information (such as source and destination addresses) and packets can be routed independently through the network (example: Internet). Packet switching uses statistical multiplexing and does not require a dedicated path.
Key difference: circuit switching reserves a dedicated path and resources for the whole session; packet switching sends independent packets without reserving a single dedicated path.
Implication: circuit switching provides predictable latency and steady bandwidth while packet switching is more efficient for bursty traffic and supports resource sharing.