Given a 512 Mbps link and a 20 msec propagation delay in the link. Find the transmission time, utilization and throughput of the network if the network is using stop and wait transport protocol and a packet size of 4000 bit. Given a 512 Mbps link and a 20 msec propagation delay in the link. Find the transmission time, utilization and throughput of the network if the network is using Selective Repeat with window size of 20000 bits. Describe a case where Go Back N and STOP and WAIT have the same result. Draw a case in Selective Repeat where the Receiver receives the same sequence of packets for different sender sequences. Two Hosts X and Y send data to each other using TCP protocol. Draw the transaction of packets and ACKs between the two hosts. The segment size is 7 X sends: a b c d e f g h I j k l m n o p r s t u v w x y z a b c d e f g h j k Y sends: Z Y X W V U T S Q R P O N M L K J I H G F E D C B A Z Y X W U V T S R