Kendrick

DNS is a hierarchical naming system for computers and other devices on the Internet. The DNS system is used to resolve domain names, which are the names of websites and other resources on the Internet. When someone types www.example.

com into their web browser, the DNS server on their computer looks up the domain name www.com in the DNS hierarchy.

The DNS hierarchy is divided into two levels: the top level is the domain name (for example, com), and the second level is the IP addresses (for example, 192.168.1.1). The DNS server on the person’s computer queries the name servers at the top of the hierarchy for the domain name www.

com. If the name server at the top of the hierarchy can’t find the domain name, it will ask one of the name servers at the second level for the domain name. If the name server at the second level can’t find the domain name, it will ask one of the name servers at the third level for the domain name. And so on.

The DNS server on the person’s computer will eventually find the domain name www.

com on the third level of the DNS hierarchy. The DNS server will return the domain name to the person’s web browser, and the person will be able to visit the website.