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The named-checkzone utility CHECKS the syntax and consistency of the zone file.

Syntax: named-checkzone [-DGV] [-c CLASS] zone [filename]

The named-checkzone utility checks the syntax and consistency of the zone file.

Syntax: named-checkzone [-dgv] [-c class] zone [filename]

The named-checkconf UTILITY CHECKS the syntax of the named.conf CONFIGURATION file.

Syntax: named-checkconf [-t directory] [FILENAME]

The named-checkconf utility checks the syntax of the named.conf configuration file.

Syntax: named-checkconf [-t directory] [filename]

Answer :A POINTER RECORD (PTR) is used to TRANSLATE an IP ADDRESS into a domain name.

Answer :MX records specify the mailing server of the domain. An MX record SHOWS to which computer a mail of a particular domain should be sent. The MX record also includes a priority number, which can be used to determine several computers where the mail for the domain can be sent. The first attempt is to DELIVER the mail to the computer with the highest priority (lowest value). If this attempt fails, the mail goes to the next computer (with a higher priority value), and so on.test.com IN SOA ......mail test.com IN SOA ......mail IN A 192.1.1.2 IN HINFO AlphaServer UNIX IN TXT my server IN MX 30 mail2.nextstep4it.com IN MX 20 mail3.nextstep4it.com IN MX 10 mail2.nextstep4it.com

ANSWER :HINFO and TXT records are for information only. An HINFO record has two items in its data part. The FIRST ITEM is information about hardware, and the second ONE is information about software. A TXT record contains a general data string in its data part.Example :test.com IN SOA ......MAIL IN A 192.1.1.2IN HINFO My_Server UNIXIN TXT my server.

ANSWER :Synonyms to domain names can be CREATED using CNAME records. This is OFTEN referred to as 'creating aliases for COMPUTER names'.

ANSWER :A (Address) RECORDS assign IP addresses to domain NAMES of computers. The IP address cannot have a dot at the end.

The Start of AUTHORITY (SOA) record determines the name server that is an authoritative SOURCE of information for the particular domain. There is always only one SOA record in the FILE, and it is PLACED at the beginning of the file of authoritative resource RECORDS.

The Start of Authority (SOA) record determines the name server that is an authoritative source of information for the particular domain. There is always only one SOA record in the file, and it is placed at the beginning of the file of authoritative resource records.

Answer :A, NS, CNAME, SOA, PTR, MX.

Answer :TIME to live. A 32-bit NUMBER indicating the time the PARTICULAR RR can be kept valid in a server cache. When this time expires, the record has to be CONSIDERED invalid. The value 0 keeps nonauthoritative servers from saving the RR to their cache memory.

Answer :INFORMATION on DOMAIN names and their IP addresses, as WELL as all the other information distributed via DNS is stored in the memory of NAME servers as Resource Records (RR).

BIND9

BIND9