Guide to TCP/IP: IPv6 and IPv4, Fifth Edition
ISBN 978-1-305-94695-8
Chapter 4 Solutions
Answers to Review Questions
2. a and b
4. c
6. d
8. a
10. b
12. b
14. c
16. False
18. c
20. b, c, d
22. b
Hands-On Projects Discussion
Hands-On Project 4-1
In this project, the students must learn to access the command prompt and run the arp -a
command to view their ARP cache and the arp -d command to clear the cache. They also use
the ping command to test connectivity to another computer. You may want the students to
Guide to TCP/IP: IPv6 and IPv4, Fifth Edition
ISBN 978-1-305-94695-8
Hands-On Project 4-2
In this project, the students learn how to view the routing table for a computer’s IPv4 interface.
They first issue the netsh command, which displays the network configuration of a computer
Hands-On Project 4-3
This project is substantially similar to Project 4-2 except that it prints the IPv6 routing table for
the student’s computers. The command netsh interface ipv6 show route may be a
Hands-On Project 4-4
This project gives students the opportunity to review the packet data for different routing
protocols they reviewed in the chapter using Wireshark. The exercise makes use of several
Case Projects Discussion
Case Project 4-1
When a device can communicate with local devices but not remote devices, there is likely a
problem with the host’s network address, network mask, or default gateway. When viewing the
trace file, the student should pay particular attention to the ARP process. If the source ARPs for
Guide to TCP/IP: IPv6 and IPv4, Fifth Edition
ISBN 978-1-305-94695-8
Case Project 4-2
This is a bit of a tricky question. Most likely, the students will point to the Hop Limit value as a
definition of how far the packet traveled. However, an application can influence the Hop Limit
field value using options such as IPv6_UNICAST_HOPS, IPv6_MULTICAST HOPS, or
Case Project 4-3
Quality of Service (QoS) enables network designers and administrators to offer varying levels
of service and priority to network devices and applications. As networks mature, many
administrators focus on optimizing performance for particular devices or applications.
IP precedence defines the priority of packets as routers handle them. IP TOS, however, defines