2. (8 pts) In class we considered a stop-and-wait (a.k.a. Automatic Repeat reQuest -ARQ) protocol executed...

  

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2. (8 pts) In class we considered a stop-and-wait (a.k.a. Automatic Repeat reQuest -ARQ) protocol executed on 1 Gbps link from New York to California, with a 15 msec one-way delay and a packet size of 8000 bits. Assume no errors. (a) (3 pts) Ignoring headers and the transmission time for ACKS, and assuming there are no errors, what is the maximum utilization if we instead used a sliding window protocol with a maximum send window size of 100 packets? Show your work. (b) (5 pts) If the maximum send window size is 100 packets, how large must packets be (in bits) to achieve utilization of 0.5? Assume no errors. 2. (8 pts) In class we considered a stop-and-wait (a.k.a. Automatic Repeat reQuest -ARQ) protocol executed on 1 Gbps link from New York to California, with a 15 msec one-way delay and a packet size of 8000 bits. Assume no errors. (a) (3 pts) Ignoring headers and the transmission time for ACKS, and assuming there are no errors, what is the maximum utilization if we instead used a sliding window protocol with a maximum send window size of 100 packets? Show your work. (b) (5 pts) If the maximum send window size is 100 packets, how large must packets be (in bits) to achieve utilization of 0.5? Assume no errors.