Why server is showing "Temporary failure in name resolution" when trying to download packages

Solution Verified - Updated 2024-08-07T04:49:25+00:00 -

Issue

Why server is showing "Temporary failure in name resolution" when trying to download packages
When using yum command to install packages it is saying that RHN Support will be disabled, communicating with server error messages are shown:

TEMPORARY FAILURE IN NAME RESOLUTION.
setting up install process
No package apache available. 
Nothing to do.

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