PING
ping is the easiest.
answer: PING
Ping and/or traceroute
ICMP
The ping command.
go to command prompt and type in either Ping Loopback, or Ping 127.0.0.1 or Ping another device's IP Address
PING
The full form of TTL is Time To Live
Ping is a special command line utility which allows to check accessibility of particular hosts. It uses ICMP protocol and because many online services block it, the utility not always provides correct results.
Ping is the name of a standard software utility used to test network connections. In some games (I am not sure about CoD) you can get kicked from servers for 'ping too high.'
The most basic is "Ping".The syntax is:Ping remote host or ip addressi.e. ping www.google.comorping 127.0.0.1