A communication link uses sliding window flow control with the sender window set

Question

A communication link uses sliding window flow control with the sender window set to 4 frames and the receiver window set to 3 frames. Show the frames in each window for each of the following cases:

(a) Sender has sent frames 0, 1, 2 and 3. Sender received ACK for frame 2 only. Receiver has received frame 3 but not frame 2. What is the next action of the sender?

(b) Receiver is expecting frame 6 and has already received frame 7. Sender has sent frame 8, previously received ACK5 and has just received NAK6. What is the next action of the sender?

Explanation / Answer

a) as sender has recieved the ack of 2 so it will not send 2 again. so after timeout it wil send 0 1 and then 3 again

b) sender will send fram 6 again.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.