5 Reliable delivery and Handshaking (15 points) Suppose Alice and Bob wish to communicate through a reliable delivery protocol that uses sequence num- ment numbers in their packets that are similar to TCP's. Suppose Alice bers and cumulative acknowledg initiates a connection to Bob, sending a SYN packet that has a (packet-based) sequence number 46 1. Suppose Bob responds to Alice with a packet that has both SYN and ACK flags set, with a (packet- Bob's SYN-ACK packet? based) sequence number 25. What is the (packet-based) ACK number on (2 points) 2. Can Bob transmit data in his SYN-ACK packet? Say "YES" or "NO", following it up by explaining why or why not. (1 + 2 3 points) 3. As a response to Bob's SYN-ACK, Alice sends out an ACK packet. What are the (packet-based) sequence and ACK numbers on Alice's ACK packet? (1.5+15-3 points) 4. Can Alice transmit data in this ACK packet? Write "YES" or "NO". ( point) 5. Suppose Alice and Bob converse using a go-back-N protocol with a fixed window size of 10 packets once Alice's ACK has been sent out. Consider only Bob's data transmissions to Alice. Bob has an infinite stream of data to send out to Alice and uses his full window's worth of packets each round-trip