5. [4 pts] two stations running tcp/ip are engaged in transferring a file. this file is 100mb long, the payload size is 100 kb, and the negotiated congestion window size is 300 kb. the sender receives an ack 1200 from the receiver. (2 points each) a. which bytes will be sent next? b. what is the last byte number that can be sent without an ack being sent by the receiver?
