It uses ICMP.
Tracert uses ICMP, just like ping does.
tracert
tracert -a
TCP is a protocol that uses those.
I believe Skype uses UDP or User Datagram Protocol.
The IMAP (Internet Message Access Protocol) email protocol usually uses port 143.
Facebook uses the HTTP Protocol
address resolution protocol and reverse address resolution protocol
You use the traceroute command. Example, in Windows: open a command window, and type tracert wiki.answers.com.You use the traceroute command. Example, in Windows: open a command window, and type tracert wiki.answers.com.You use the traceroute command. Example, in Windows: open a command window, and type tracert wiki.answers.com.You use the traceroute command. Example, in Windows: open a command window, and type tracert wiki.answers.com.
Press CTRL - C and it it will stop the tracert.
tracert command
it uses the time-to-live (TTL) field.