Start, Stop, Restart and Status of Network Service on CentOS 8 or RHEL 8

1. Start, Stop, Restart, and Show Status using NetworkManager.service:

#sudo systemctl start NetworkManager.service
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#sudo systemctl stop NetworkManager.service
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#sudo systemctl restart NetworkManager.service
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#sudo systemctl status NetworkManager.service
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2. Start, Stop, and Show Status using nmcli:

**Caution: Do not run "nmcli networking off" if connected via SSH, as it may result in network connectivity loss.**

#sudo nmcli networking on
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#sudo nmcli networking off
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#sudo nmcli general status
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#sudo nmcli device status
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These commands allow you to control and report network status using the NetworkManager service and nmcli tool on CentOS 8 or RHEL 8 Linux systems.