How do I enable the wireless network adapter on centos 7 minimal install?
You can quickly connect to a wireless network using nmcli:
nmcli d wifi c <SSID> --ask
This will connect to the specified SSID, ask you for the passphrase, and configure the entire connection for you.
You are meant to use the literal word wifi, not the interface name. NetworkManager will find your WiFi interface on its own.