Sequence the following stages of the sliding window protocol for flow control.…
2025
Sequence the following stages of the sliding window protocol for flow control.
A. Sender move the window to the next set of frames.
B. Sender sends a window of frames.
C. Receiver acknowledge the received frames.
D. If acknowledgment is not received, Sender retransmits the frame.
Choose the correct answer from the options given below:
- A.
B, A, C, D
- B.
B, C, D, A
- C.
B, D, C, A
- D.
B, C, A, D
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Show answer & explanation
Correct answer: D
The correct sequence for the stages of the sliding window protocol is B ,C , A , D.
Here is the step-by-step breakdown of how the protocol flows logically:
B. Sender sends a window of frames: The process initiates with the sender transmitting a specific number of frames permitted by the current window size without waiting for an acknowledgment.
C. Receiver acknowledges the received frames: Once the frames successfully arrive at the destination, the receiver processes them and sends back an acknowledgment (ACK) to the sender.
A. Sender moves the window to the next set of frames: Upon receiving the successful ACK(s), the sender "slides" its window forward, allowing it to transmit the next consecutive set of frames.
D. If acknowledgment is not received, Sender retransmits the frame: This acts as the exception-handling mechanism. If an ACK is delayed, lost, or a frame is corrupted (triggering a timeout), the sender will retransmit the unacknowledged frames according to the specific protocol rules (like Go-Back-N or Selective Repeat)