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Guide to TCP/IP: IPv6 and IPv4, Fifth Edition
ISBN 978-1-305-94695-8
Chapter 8 Solutions
Answers to Review Questions
2. c
4. a, c, d
6. True
8. b
10. d
12. a
14. a
16. a
18. c, d
20. b
22. d
Hands-On Projects Discussion
Hands-On Project 8-1
The students use basic ipconfig commands at the command prompt to examine and manipulate the data in their
computer’s DNS resolver cache. These utilities have been available for a number of years and this task allows
Hands-On Project 8-2
Configuring DNS dynamic updates has also been available in Windows for awhile and, by default, a Windows 7
or Windows 10 computer is already set up to update its local DNS server with its full hostname and IP address.
Hands-On Project 8-3
Using the ipv6-literal.net Web site is quite an advantage, particularly to students who are not familiar with IPv6
Hands-On Project 8-4
Using Wireshark to capture their own DNS traffic allows students to see the details of the information contained in
Guide to TCP/IP: IPv6 and IPv4, Fifth Edition
ISBN 978-1-305-94695-8
Hands-On Projects 8-5 and 8-6
Case Projects Discussion
Case Project 8-1
This project doesn’t require that the student write an actual zone statement to a DNS server’s named.conf file, but
they do have to gather or rather create the information (which will be fictitious) that is required. The students can
use their own computers or even a public Web site as the IPv4 address example and then use an IP calculator to
convert the IPv4 address to its IPv6 equivalent.
For instance, the A and A record examples can look like:
This format was illustrated in Figure 8-5.
Case Project 8-2
At most ISPs, users establish a point-to-point connection to the ISP as the primary TCP/IP link. In fact, most such
users also obtain their IP addresses and other configuration information from DHCP at such providers, including
an address for a DNS server for name resolution services. By pointing users first to a caching-only DNS server, or
Case Project 8-3
Two name servers are the recommended minimum so that if one name server fails, another will remain available to
provide ongoing name resolution services. Given the information provided in Case Project 8-3, the organization
could use as many as nine DNS servers: three for each subnet at each location (six total), two more for each
