In: Computer Science
(Computer Network Question)Answer the following questions when the two nodes with a point-to-point connection are communicating with a link with a bandwidth of 8 Mbps and a one-way radio delay of 2 mssec. (The header overhead, i.e. header length, is ignored in the performance calculation process.)
a)Draw a sliding window of 1KB (8000bit) frames with a size of 1KB (KB) when sending in a sliding window with a size of 2 transmission window, the process of operation if no error occurs. What is the link utilization rate when the link is said to be long-term communication in a communication environment like this? Calculate the utilization with the base of the utilization coefficient calculation (assume that the receiving node immediately sends the ACK and the length of the ACK is negligible).
b)To maintain link utilization of 80% or more in the same communication environment, what should be the minimum size of the transmission window? Figure out the transmission process of the proposed answer and calculate the transmission efficiency.