What is mean by DNS ?
The DNS is considered as the most essential service in the case of a website.
Its failure results webserver, Mail server, mysql service for a website to be seen down. So understanding the DNS is essential to work as a Sysadmin.
The first step regarding a domain is registering a domain name with the registrar. Then two name
servers will be assigned for the domain.
Once the Name servers are assigned, it implies that the valid records for DNS of the domain are present in the specified Name Servers. It means that the changes made in these NS records alone will be valid and propagated through the Internet. Hence these name servers are termed as "authoritative Name servers".
The DNS is considered as the most essential service in the case of a website.
Its failure results webserver, Mail server, mysql service for a website to be seen down. So understanding the DNS is essential to work as a Sysadmin.
The first step regarding a domain is registering a domain name with the registrar. Then two name
servers will be assigned for the domain.
Once the Name servers are assigned, it implies that the valid records for DNS of the domain are present in the specified Name Servers. It means that the changes made in these NS records alone will be valid and propagated through the Internet. Hence these name servers are termed as "authoritative Name servers".