DNS is used on TCP/IP-connected networks to convert computer names to IP addresses. For example, you can type in www.microsoft.com, and DNS converts that to an IP address. DNS exists because it is much easier for humans to remember a name than a cryptic number. However, DNS creates a layer of abstraction over the information that is required for connections to successfully complete. Any time you take a step away from a very simple system, there is the opportunity for error, and DNS is no exception. The following are two of the things to check when trying to diagnose potential DNS issues:
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