Question: (i) A Stop-and-Wait Automatic Repeat Request (ARQ) mechanism has 5 ms as its time-out. Sketch the flow diagram of 3 frames where the round-trip delay

(i) A Stop-and-Wait Automatic Repeat Request (ARQ) mechanism has 5 ms

(i) A Stop-and-Wait Automatic Repeat Request (ARQ) mechanism has 5 ms as its time-out. Sketch the flow diagram of 3 frames where the round-trip delay for each frame is 3ms. Assume both data and ACK frames arrive successfully. [4 marks] (ii) Revise the answer in Q2 (d)(i) if the same mechanism now has a 3 ms time-out and 5 ms round-trip delay. [5 marks] (iii) Discuss if the ACK for first frame in Q2 (d)(i) is lost. Redraw the flow diagram. [4 marks]

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