Which of the following should appear in the primary DNS configuration file to accomplish this?

Posted by: Pdfprep Category: CAS-001 Tags: , ,

168.20.53. An administrator wants to secure a company by only allowing secure zone transfers to the secondary server.

Which of the following should appear in the primary DNS configuration file to accomplish this?
A . key company-key. {
algorithm hmac-rc4; secret "Hdue8du9jdknkhdoLksdlkeYEIks83K="; }; allow transfer { 192.168.20.53; }
B . key company-key.{ algorithm hmac-md5; secret "Hdue8du9jdknkhdoLksdlkeYEIks83K="; }; allow transfer { 192.168.10.53; }
C . key company-key. {
algorithm hmac-md5;
secret "Hdue8du9jdknkhdoLksdlkeYEIks83K=";
}; allow transfer { 192.168.20.53; }

D . key company-key.{ algorithm hmac-rc4; secret "Hdue8du9jdknkhdoLksdlkeYEIks83K="; }; allow transfer { 192.168.10.53; }

Answer: C

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