1 10- As discussed in the OSI protocol stack, one way a data link layer handles transmission errors is by requesting dam

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1 10 As Discussed In The Osi Protocol Stack One Way A Data Link Layer Handles Transmission Errors Is By Requesting Dam 1 (40.49 KiB) Viewed 41 times

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1 10- As discussed in the OSI protocol stack, one way a data link layer handles transmission errors is by requesting damaged frames to be retransmitted (i.e. by sending a NACK, Not ACKnowledgment). If the frame arrived successfully, an ACK would be sent instead. Let probability of a frame being transmitted correctly be p. a) Find the probability, qx, of a frame requiring exactly k transmissions b) If p=0.3, what is the mean number of transmissions required to send a frame if acknowledgements (ACKs and NACKS) are never lost? Hint: If you don't already know this, the mean number would simply be: kqx And 2, kq*-1 = 31 دره- - c) What if some NACKs are lost, would that increase or decrease (or not change) the mean number of transmissions to send a frame? Explain briefly.