Authentication. DNSSEC (Domain Name System Security Extensions) is designed to ensure the authenticity of DNS data, preventing DNS spoofing attacks by verifying that the responses come from the correct source.
U would Say B - authentication.
DNS Security (DNSSEC)
RFC 5011 references a DNS Security DNSSEC specification that
automates the trust anchor process of validating the thousands of
possible DNS systems that may exist in a resolver’s DNS hierarchy. The
purpose of DNSSEC is to validate zone transfers with a digital signature
and to thwart attackers that falsify responses to DNS queries, giving
them the ability to redirect end users to bogus internet sites. On
September 27, 2017, the Internet Corporation for Assigned Names and
Numbers (ICANN) announced that in the first quarter of 2018, it planned
to roll out a new key signing key (KSK) to support global DNSSEC. The
rollout KSK-2017 was successfully completed on October 11, 2018. This
represented the first change to the KSK since 2010.
The answer should be Authentication since DNSSEC authenticates responses to DNS Domain Name Look Ups. Authentication implies Integrity, but Integrity does not imply authentication.
DNSSEC does not provide authentication, but authenticity of the information, ensuring what you recive is the correct resolution, therefore it is INTEGRITY!!!
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