How many additional DNS queries are needed when DNSSEC integrity checks are added?

How many additional DNS queries are needed when DNSSEC integrity checks are added?
A . Three
B . Zero
C . One
D . Two

Answer: B

Explanation:

DNSSEC does not require any additional DNS queries to be performed. The DNSSEC integrity checks and validations are all performed as part of the single DNS lookup resolution.

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