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https://linuxhint.com/configure_network_centos7/

After installing and setting up CentOS7 the first thing you want to do is connect to the internet or other network resources. But sometimes its hard to remember all the steps needed, such as DNS, IP addressing, hosts file, gateways, etc. Even after doing the setup, no internet. In this article I will show you all the basic setup steps and the theory behind it as a quick resource for network configuration on CENTOS7.