» Linux » Examen sur Linux » Examen 202 : Networking Administration » Section 5 » Question 25/27
25.You have been asked to set up a DNS server for your department. You are to allow the company’s main DNS server to update yours. What is the correct entry in the named.conf?

allow-transfer { IP_ADDRESS; };
allow-update { IP_ADDRESS; };
allow-access { IP_ADDRESS; };
allow-access { IP_ADDRESS };

Explanation: A zone transfer occurs when a slave server asks the primary server for the zone information. Allow-transfer specifies which hosts are allowed to receive zone transfers from the server. This must be configured in the zone file on the primary DNS server.

Reference: http://www.freebsddiary.org/secondary.php

Incorrect Answers
B: Allow-update specifies which hosts are allowed to submit Dynamic DNS updates to the server.
C: This is an invalid option.
D: This is an invalid option.
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