1) Suppose Nodes A and B are on opposite ends of a 1000 meter cable, and they ea

Question

1) Suppose Nodes A and B are on opposite ends of a 1000 meter cable, and they each have one frame of 1,500 bytes (including headers and preamble) to send to each other. Both nodes attempt to transport at time t=0. Assume a transmission rate of 100 Mbps and CSMA/CD with back-off intervals of multiples of 512 bits is used. After the first collision, A draws K = 0 and B draws K =1 in the exponential back-off protocol. Assume that each message transmission is cancelled 4 bytes after a collision is detected and each sending station then transmits a 48 bit Jam signal when it detects a collision. At what time (in seconds) is A's packets completely delivered?

2)For VOIP, you have the normal 34 byte application header. If, in addition to your nomral 64,000 kbps audio signal, you are attaching a 5,300 bps error recovery signal, and you are using TCP, IPv4 and Ehternet with their standard header size, with the Ethernet minimum spacing, preamble, and checksum described in the above problem.

2a) What is the total bandwidth consumed by your transmission each second?

2b) What is the efficiency of your use of that bandwidth (you only need to use your previous answer and of the other pieces of data in the problem to get this)?

Note to Chegg: I posted two questions because they are connected to one another.

Explanation / Answer

1) Suppose Nodes A and B are on opposite ends of a 1000 meter cable, and they ea

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