Summary

Summary

In this chapter, we have examined how to install and configure a DNS server. Since DNS is a complex topic, you should read the man pages for the daemons utilized for DNS services.

Questions

1. 

Which of the following is a fully qualified domain name?

  1. savannah

  2. 255.0.0.0

  3. savannah.georgia.com

  4. 192.23.34.255

 C. Qualified domain names must have a hostname and a domain name.

2. 

Which of the following is a valid /etc/hosts entry?

  1. 204.168.14.23 leura 10.168.14.23

  2. 204.168.14.23 leura leura.paulwatters.com loghost

  3. leura 204.168.14.23 leura.paulwatters.com loghost

  4. leura leura.paulwatters.com 204.168.14.23

 B. IP addresses must map to hostnames.

3. 

Which of the following is defined in named.root?

  1. Root name server data required to initialize the DNS server cache

  2. Authorization for the root user to set up DNS services

  3. Access permissions for nonroot users to access DNS data installed by root

  4. Zone data for hosts within the local root NIS+ domain

 A. The named.root file always contains the root name server data.

4. 

Which of the following is defined in /etc/defaultdomain?

  1. The fully qualified domain name of the localhost

  2. The default web site domain to connect through using Netscape

  3. The name of the local NIS+ domain

  4. The name of the local DNS domain

 D. The defaultdomain defines the local domain.

5. 

What is the purpose of nslookup?

  1. To resolve IP addresses using hostnames only

  2. To resolve hostnames using IP addresses only

  3. To resolve both hostnames or IP addresses given an IP address or hostname

  4. To look up a list of users who can edit zone files

 C. The nslookup command can resolve IP addresses and hostnames.

6. 

What fields can be found in the SOA record?

  1. origin, mail addr, serial, refresh, retry, expire, minimum ttl

  2. original serial, mail refresh, ttl retry, expiry date

  3. original serial, mail addr, ttl retry, ttl expire, minimum refresh

  4. origin, serial date, refresh time, retry, expire, minimum ttl

 A. The origin, mail addr, serial, refresh, retry, expire, and minimum ttl fields can all be contained within an SOA record.

7. 

What command can be used to resolve IP addresses on the command line?

  1. zip

  2. resolve

  3. list

  4. nslookup

 D. The nslookup command can resolve IP addresses as well as hostnames.

8. 

What is the purpose of the server statement in an SOA record?

  1. Defines characteristics of remote name servers

  2. Defines characteristics of local name servers

  3. Defines characteristics of NIS servers

  4. Defines characteristics of NIS+ servers only

 A. The server statement only defines the characteristics of remote name servers.

9. 

What is the main requirement of the zone record?

  1. One must be created for each network or subdomain that your DNS server manages.

  2. Two must be created for each network or subdomain that your DNS server manages.

  3. Three must be created for each network or subdomain that your DNS server manages.

  4. Four must be created for each network or subdomain that your DNS server manages.

 A . One zone record must be created for each network or subdomain that your DNS server manages.

10. 

What is the role of the options statement?

  1. Optional parameters for clients

  2. Sets key parameters that affect the runtime behavior of the BIND server

  3. Sets key parameters that affect the shutdown behavior of the BIND server

  4. Sets key parameters that affect the clustering and high availability of the BIND server

 B. The options statement sets key parameters that affect the runtime behavior of the BIND server.

Answers

1. 

C. Qualified domain names must have a hostname and a domain name.

2. 

B. IP addresses must map to hostnames.

3. 

A. The named.root file always contains the root name server data.

4. 

D. The defaultdomain defines the local domain.

5. 

C. The nslookup command can resolve IP addresses and hostnames.

6. 

A. The origin, mail addr, serial, refresh, retry, expire, and minimum ttl fields can all be contained within an SOA record.

7. 

D. The nslookup command can resolve IP addresses as well as hostnames.

8. 

A. The server statement only defines the characteristics of remote name servers.

9. 

A. One zone record must be created for each network or subdomain that your DNS server manages.

10. 

B. The options statement sets key parameters that affect the runtime behavior of the BIND server.



Part I: Solaris 9 Operating Environment, Exam I
 
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