1) Explain the role of ports in network communication.

2) Suppose an application opens a UDP port 30,000 and another application opens a TCP port 30,000. What will happen?

3) What features make TCP a reliable transport layer protocol?

4) What is meant by stream delivery in TCP?

5) For a TCP message does the recipient port address have to be the same as the sender port address? Why or why not?

6) Explain how sequence numbers are negotiated in a TCP three-way handshake process.

7) Give an example of an application where TCP would be preferable over UDP and another where UDP would be preferable to TCP. For each, explain why the chosen protocol is superior for that situation.