Note that this exercises in this chapter that use telnet can sometimes be difficult to perform, not because they are hard, but because if you don’t type it fast enough and perfectly enough, the remote server will disconnect before you are finished. Also, Windows telnet doesn’t always work well (sometimes it hides what you yourself are typing). A video will soon be available on this page showing what this looks like if you have trouble doing it. Don’t worry, the point of this is simply to get yourself more familiar with what computers are doing behind-the-scenes. You won’t ever have to do this yourself.