Question

What is the net effect if recursion is disabled on a DNS server and the DNS server does not have any forwarding or root hints configuration present?

A) The DNS server will be able to provide only answers to queries about internal DNS zones

B) The DNS server will be able to provide only answers to queries about external DNS zones

C) The DNS server will be able to provide answers to queries about internal and external DNS zones

D) None of the above

Answer 1

When recursion is disabled and no forwarding or root hints are configured in a DNS server, it can only resolve queries for its authoritative DNS records, typically internal DNS zones, and cannot resolve external DNS zones.

Step-by-step explanation:

If recursion is disabled on a DNS server and there is no forwarding or root hints configuration, the DNS server will only be able to resolve queries for which it holds authoritative DNS records. This typically includes internal DNS zones that are directly managed by the DNS server. Without the ability to perform recursion or forward queries to other DNS servers, it would not be able to resolve names for external DNS zones that it does not manage. Therefore, the net effect is that the DNS server would be able to respond only to queries about zones it directly authorizes.

The correct answer to the question is: A) The DNS server will be able to provide only answers to queries about internal DNS zones.