Arrange the following stages of the sliding-window protocol for flow control…
2025
Arrange the following stages of the sliding-window protocol for flow control in the normal sequence.
A. Sender moves the window to the next set of frames.
B. Sender sends a window of frames.
C. Receiver acknowledges the received frames.
D. If acknowledgment is not received, sender retransmits the frame.
- A.
B,A,C,D
- B.
B,C,D,A
- C.
B,D,C,A
- D.
B,C,A,D
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Correct answer: D
Correct answer: B, C, A, D
B: The sender first sends a window of frames.
C: The receiver acknowledges the frames that it receives correctly.
A: After the acknowledgment is received by the sender, the sender slides/moves the window to the next set of frames.
D: Retransmission is the timeout/error-handling step used only if the expected acknowledgment is not received.
So the normal sequence is B, C, A, D.
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