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.
1. |
Which of the following is a fully qualified domain name?
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2. |
Which of the following is a valid /etc/hosts entry?
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3. |
Which of the following is defined in named.root?
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4. |
Which of the following is defined in /etc/defaultdomain?
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5. |
What is the purpose of nslookup?
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6. |
What fields can be found in the SOA record?
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7. |
What command can be used to resolve IP addresses on the command line?
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8. |
What is the purpose of the server statement in an SOA record?
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9. |
What is the main requirement of the zone record?
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10. |
What is the role of the options statement?
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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. |