You can find the answers to the following questions in Appendix A, "Answers to Chapter Review Questions."
| 1: | Imagine that a router receives a packet over an Ethernet. What does the router look at inside the IP packet to decide what to do with the packet? |
| 2: | PC1 sits on an Ethernet, with a web server on another Ethernet. A router, R1, is connected to both Ethernets. How does PC1 get its HTTP request to the web server? |
| 3: | PC1 sits on an Ethernet network, along with R1, and R1 and R2 are connected to a second Ethernet. Finally, R2 is connected to a third Ethernet, along with a web server. PC1's IP address is 5.5.5.5, and the server's is 6.6.6.6. What IP address is in the destination IP address field of a packet sent from PC1 to the web server? |
| 4: | PC1 sits on an Ethernet network, along with router R1. Routers R1 and R2 are connected to a second Ethernet. Finally, R2 is connected to a third Ethernet, along with a web server. PC1's IP address is 5.5.5.5, and the server's is 6.6.6.6. When the web server sends a packet back to PC1, what IP address is in the source IP address field of the packet? |
| 5: | For Class B networks, what is the range of numbers allowed for the first octet? |
| 6: | For Class C networks, what is the range of numbers allowed for the first octet? |
| 7: | How many IP addresses exist in Class A network 7.0.0.0? |
| 8: | How many IP addresses exist in Class B network 166.5.0.0? |
| 9: | How many IP addresses exist in Class C network 192.55.0.0? |
| 10: | Describe the structure of a Class A IP address. |
| 11: | Describe the structure of a Class C IP address. |
| 12: | What is an octet? |
| 13: | Define the term IP network. List a sample network, along with the first and last valid IP addresses. |
| 14: | All hosts on a particular LAN segment use IP addresses that begin with 150.1.1. What network number describes the network in which these addresses reside? |
| 15: | All hosts on a particular LAN segment use IP addresses that begin with 150.1.1. Subnetting was used, treating the first 3 octets as the subnet. What subnet number is used to represent the subnet? |
| 16: | What is the main motivation for using IP subnetting? |
| 17: | Describe how subnetting is accomplished, particularly how it changes or relaxes some rules about how IP addresses are structured. |
| 18: | Imagine that Class B network 128.1.0.0 is subnetted by treating the first 3 octets as if they were the network number. A network diagram requires four subnets. Describe how you might go about deciding what the addresses should look like in each subnet. |
| 19: | What two main functions does the IP protocol define? |
