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Question:

The following is an SOA record obtained via a zone transfer: What is the name of the domain's authoritative DNS server, and how frequently will secondary servers check in for updates?

A DNSRV1.anycomp.com, 3,600 seconds
Explaination

The SOA always begins by defining the authoritative server (in this example, DNSRV1), followed by e-mail contact information along with a few additional items. The refresh time specifies how frequently secondary servers will check for updates—in this example, 3,600 seconds (1 hour).