[nmcli] Where is the configuration file of device (redhat 7)

OS is redhat 7.

[root@ole7 network-scripts]# nmcli dev 
DEVICE       TYPE      STATE         CONNECTION 
virbr0       bridge    disconnected  --         
eno16777736  ethernet  disconnected  --         
eno33554960  ethernet  disconnected  --         
virbr0-nic   ethernet  disconnected  --         
lo           loopback  unmanaged     --
root@ole7 network-scripts]# nmcli dev connect eno16777736 
Device 'eno16777736' successfully activated with 'd0a7c85d-fb7b-4330-88e7-e7085a7106fe'.
[root@ole7 network-scripts]# nmcli con sh
NAME         UUID                                  TYPE            DEVICE      
team0-p2     bf8a8885-4bb5-42cc-b25b-e64f894ff740  802-3-ethernet  --          
team0-p1     15187fa2-5159-4f4c-a981-6fb17b4ad2cd  802-3-ethernet  --          
eno33554960  16eb4e85-5075-4c05-a068-721f09a7e9d2  802-3-ethernet  --          
team0        d51390e8-e75a-466b-9870-41e7a7ad3edc  team            --          
eno16777736  d0a7c85d-fb7b-4330-88e7-e7085a7106fe  802-3-ethernet  eno16777736 

Which mean its device eno16777736 configured 'somewhere' to connection eno16777736.
I tried to edit from sysconfig network-scirpts file but not works.

Im new with redhat 7. This is very basic topic of network configuration. However read through redhat and oracle linux books does not meantion. Please help me.

check /etc/sysconfig/network-scripts

also check the device

# ls /sys/class/net/