CompTIA Exam Questions

Which of the following should the company use to fulfil…

A company wants to host a publicity available server that performs the following functions:
+Evaluates MX record lookup
+Can perform authenticated requests for A and AAA records
+Uses RRSIG

Which of the following should the company use to fulfill the above requirements?

A.
LDAPS

B.
DNSSEC

C.
SFTP

D.
nslookup

E.
dig