Question

Suppose tcp operates over a 1-gbps link. Assuming tcp could utilize the full bandwidth continuously, how long would it take the sequence number to wrap around completely

Answer 1

Answer:

If a UDP datagram is sent from host A, port P to host B, port Q,

but at host B there is no process listening to port Q, then B is to

send back an ICMP Port Unreachable message to A. Like all ICMP

messages, this is addressed to A as a whole, not to port P on A.

Answer 2

Explanation:

1. if udp and TCP operates over a gbps link by using TCP could utilise the full bandwidth continuously it long take the sequence number to wrap around completely