OBTAIN AN IP ADDRESS BY USING DHCPBEFORE YOU BEGIN THIS EXERCISE, YOU...

3. Which of the following statements about DNS name and address resolution are

correct? (Choose all that apply.)

a. The DNS distributed database is indexed by both names and IP addresses.

b. The top-level domain in-addr.arpa is used for both forward and reverse queries.

c. In the in-addr.arpa domain, the order of the IP address octets is reversed.

d. Troubleshooting tools, such as the nslookup command-line tool, use reverse

lookup queries to report back host names.

Lesson Summary

■

A forward lookup query resolves a name to an IP address, and a reverse lookup

query resolves an IP address to a name.

■

Name servers cache query results to reduce DNS traffic on the network.

■

The DNS distributed database is indexed by name, not by IP address, so in-

addr.arpa (a special second-level domain) was created. It is based on IP addresses

instead of domain names.

Lesson 4: Configuring a DNS Client

There are several methods available for configuring TCP/IP name resolution on Win-

dows XP Professional clients. The method covered in this lesson uses DNS to provide

name resolution. A second method is to use a HOSTS file. For networks without access

to a DNS name server, creating a HOSTS file, which is a manually maintained local file,

can provide host-to-IP address name resolution for applications and services. HOSTS

files can also be used in environments in which name servers are available, but not all

hosts are registered, perhaps because some hosts are only available to a limited num-

ber of clients.

If there is a computer on your network that is running Windows 2000 Server or Win-

dows Server 2003 and has the DNS Service installed and configured on it, you should

use DNS for name resolution. This lesson shows you how to configure your computer

as a DNS client.

After this lesson, you will be able to■ Configure DNS server addresses on a computer running Windows XP Professional.■ Configure DNS query settings.Estimated lesson time: 25 minutes

How to Configure DNS Server Addresses

Because DNS is a distributed database that is used in TCP/IP networks to translate

computer names to IP addresses, you must first ensure that TCP/IP is enabled on a cli-

ent running Windows XP Professional. Internet Protocol (TCP/IP) is enabled by default

during Windows XP Professional installation. After you have confirmed that TCP/IP is

enabled on your client, you are ready to configure your computer as a DNS client.

To configure your computer as a DNS client, use the following steps: