PING is what you need to use . Ping 127.0.0.1
Use the PING (and current IP address) command to execute a loopback test on a NIC
to check if your Ethernet card r INTERNET is working r not, just type the following in command prompt: ping 127.0.0.1 This command is basically used for self test of NIC(Network Interface card) card
it's the loopback address. The IP address listed under it can be pinged to test to see if your NIC is working
ipconfig
ping 127.0.0.1
yes
go to command prompt and type in either Ping Loopback, or Ping 127.0.0.1 or Ping another device's IP Address
base1000
ping 127.0.0.1 in command mode, this is know as the loopback address. If the pings are successful then the nic is working properly
if by co you mean computer then yes you go to command prompt and type in "ipconfig/all" and you go to "network interface(or whatever it calls your nic)" and it will show u the physical address of your nic
ping 127.0.0.1