Question: 1. Consider a Stop-and-Wait ARQ system. Let T, be the expected transmission time of a frame. Let Ta be the feedback transmission time for sending

1. Consider a Stop-and-Wait ARQ system. Let T, be the expected

1. Consider a Stop-and-Wait ARQ system. Let T, be the expected transmission time of a frame. Let Ta be the feedback transmission time for sending an ACK frame. Let Ta be the total of one- way propagation delay and processing delay (a) Find the minimum time separation, T, between two successive frame transmissions. (b) Let Pbe the probability of error in a data frame and Pa be the probability of error in an ACK frame Find the probability q that a packet is correctly received and ACKed on a given transmission. (c) Find the average number of attempts needed to deliver the frame successfully d) Find the expected time required for successfully delivering a data frame. (Assume that the sender's timeout is close to T.)

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