If it didn't (and it only found it out after querying other servers), it will first add it to his own databases and then give it to you.18. Protocol - a set of rules used for computers to interact with each other over a network of some sort (such as the Internet or a some kind of a local network) they need to know a common protocol and each computer has to assume that the other one knows this protocol and uses it.19. Telnet - a program that in it's most simplicity allows you to form a text-based connection between your computer and another computer over a network of some sort. You may choose the IP address(9) or hostname(10) and the port(2) you wish to contact, and Telnet will establish a TCP(6) connection between both machines.Note about the Telnet daemon(1): the Telnet daemon is completely different. It waits for incoming TCP(6) or UDP(7) connections on port 23 and then asks the user for a login (often called a username) and a password (unless the user typed in an unpassworded username. In that case, he will get in without entering a password. Unpassworded accounts are often VERY limited) and then proceed to execute a program (usually a command interpreter(20)) and giving you some permissions, all depending on the username and the password you have entered (unless you gave in the wrong details. In that case, you will be told that either the username or the password are wrong and be given another try. Most systems give you three tries and then quit).20. Command interpreter - a program that accepts commands from the user and turns them into real commands your computer understands.For example: if your command interpreter contains a command called, say, display, which accepts a single parameter which should be a filename, and you type in 'display somefile' (without the quotes, and replace somefile with a real filename) then it will translate this command into 'okay mr. computer, find the hard drive by doing this and this, go to the FAT (F...
