telnet [-a][-e escape char][-f log file][-l user][-t term][host
[port]]
-a Attempt automatic logon. Same as -l option except uses
the currently logged on user’s name.
-e Escape character to enter telnet client prompt.
-f File name for client side logging
-l Specifies the user name to log in with on the remote system.
Requires that the remote system support the TELNET ENVIRON
option.
-t Specifies terminal type.

TCP/IP stands for transmission control protocol/Internet protocol. As you can guess by the name, TCP/IP is the protocol under which the Internet runs. along with user datagram protocol (UDP). So when you are connected to the Internet, you can try these commands against other Internet computers. Most local area networks also use TCP/IP.

NetBIOS (Net Basic Input/Output System) protocol is another way to communicate between computers.

TCP/IP commands:
telnet
netstat
nslookup
tracert
ping
ftp
NetBIOS commands (just some examples):
nbtstat
net use
net view
net localgroup

Add/Remove Programs – control appwiz.cpl
Date/Time Properties – control timedate.cpl
Display Properties – control desk.cpl
FindFast – control findfast.cpl
Fonts Folder – control fonts
Internet Properties – control inetcpl.cpl
Keyboard Properties – control main.cpl keyboard
Mouse Properties – control main.cpl
Multimedia Properties – control mmsys.cpl
Network Properties – control netcpl.cpl
Password Properties – control password.cpl
Printers Folder – control printers
Sound Properties – control mmsys.cpl sounds
System Properties – control sysdm.cpl