The DNS administrator needs to change the IP address of the primary Webserver. Any downtime would have a major impact. Which of the following is the BEST way to minimize the downtime?
A.
Update /etc/resolv.conf on the Webserver.
B.
Change the Webserver TTL (Time-To-Live) record to 5 minutes.
C.
Change the Webserver PTR record to the new hostname.
D.
Notify the domain registrar of the change in advance.
Correct answer is B
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