Human beings have a very bad memory for number sequences. However, computers and servers communicate with each other by identifying themselves through an IP address, which is a sequence of numbers or a mix of numbers that is very complex to memorize and differentiate.
To help people communicate over networks, the Domain Names System (DNS) was invented. This service is a giant Internet directory, hierarchical and distributed worldwide, which associates domain names with IP addresses.
When a web user enters a domain name in his browser, it queries a DNS server which will look for the answer to this humanly understandable address, most often an IP address, leading to the right website, computer or network. This query process is called “DNS resolution“.
Find in this “5 minutes to understand” document, how the DNS resolution works.
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