online-tech-tips.com —
"Dynamic DNS is a service provided by third-party providers in which a clients’ constantly changing IP address is kept track of and DNS servers are updated with the new IP address automatically. If you have a broadband Internet connection, you more than likely have a dynamic IP address."
One reason why it’s good to know your IP address is to be able to connect to your computer via Remote Desktop Connection and access your files.
There are plenty of other reasons why it might be useful to know your IP address.
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