. To link to any site on the web, the computer system must understand the site ’ s IP address. To get this IP number, this computer system needs to get in touch with a DNS resolver, and it gets the existing IP address of domain.com.

In easy terms, a resolver is a file that informs the server about the DNS server that it ought to utilize. Establishing a DNS resolver for the server to a legitimate IP address is extremely essential. Essentially, DNS resolver is the very first DNS server utilized while carrying out any DNS inquiry from the server. As an outcome, when the DNS resolvers do not work properly, it impacts all the services.