1. a) How does the postal service use hierarchical sorting? b) How does this simplify delivery decisions?

2. Give a non-network example of hierarchical addressing, and discuss how it reduces the amount of work needed in physical delivery.

Do not use any example in the book, the postal service, or the telephone network.

3. A client PC has two simultaneous connections to the same webserver application program on a webserver. (Yes, this is possible, and in fact, it is rather common.) What will be different between the TCP segments that the client sends on the two connections? (Hint: Consider all the fields in a TCP segment.)

4. A router that has the routing table in Figure 8-7 receives an incoming IPv4 packet. The source IP address in the arriving packet is 10.55.72.234. The destination IP address is 10.4.6.7. The TTL value is 1. The protocol field value is 6. What will the router do with this packet? (Hint: Consider all the fields in the IP and TCP headers.)