DNSSEC is used for?

A.
Encrypted DNS queries between nameservers.

B.
Cryptographic authentication of DNS zones.

C.
Secondary DNS queries for local zones.

D.
Defining a secure DNS section.

E.
Querying a secure DNS section.

Explanation:

See http://en.wikipedia.org/wiki/Domain_Name_System_Security_Extensions
DNSSEC was designed to protect Internet resolvers (clients) from forged DNS data, such as that
created by DNS cache poisoning. All answers in DNSSEC are digitally signed. By checking the
digital signature, a DNS resolver is able to check if the information is identical (correct and
complete) to the information on the authoritative DNS server.