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Overview
The Domain Name System (DNS) is an Internet service that locates and translates domain names into their corresponding Internet Protocol (IP) addresses. As you may recall, all computers connected to the Internet are addressed using an IP address. As a normal user on a network might have to access many different hosts, keeping track of the IP addresses needed quickly became a problem. It was much easier to label hosts with names and use the names to access them. Names were associated with IP addresses. When a user used a name to access a host, the corresponding IP address was looked up first and then used to provide access.
