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

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?

4. A router that has the routing table in Figure 9-8 receives an incoming packet. The source IP address is 10.55.72.234. The destination host is 10.4.6.7. The TTL value is 1. The Protocol field value is 6. What will the router do with this packet?