GATE 2006 Previous Year Paper Solution Question 4 – Network & Transport layer

In this video you will get to know the answer of question which was asked in the exam of GATE 2006.

Question :- Suppose that it takes 1 unit of time to transmit a packet (of fixed size) on communication link. The link layer uses a window flow control protocol with a window size of N packets. Each packet causes an ack or a nak to be generated by the receiver, and ack/nak transmission times are negligible. Further, the round trip time on the link is equal to N units. Consider time i is greater than N. If only acks has been received till time i, then the goodput evaluated at the transmitter at time i(in packets per unit time) is