In the DNS hierarchy, where is information about how to find the top-level domain servers held?
A) In the hosts file on the local machine.
B) On the DNS root servers.
C) On DNS caching-only servers.
D) In the organization's forward lookup zone.

Question

Quizplus · Accepted Answer

The DNS root servers hold information about how to find the top-level domain servers in the DNS hierarchy. The hosts file on the local machine contains static mappings of domain names to IP addresses, but it does not provide information about the DNS hierarchy. DNS caching-only servers store cached DNS records, but they do not provide information about the DNS hierarchy. The organization's forward lookup zone contains information about the domain names and IP addresses of hosts in the organization's network, but it does not provide information about the DNS hierarchy.

In the DNS Hierarchy, Where Is Information About How to Find