Network passwords should contain numbers, letters and special characters (#,$,!). It's also good to include a capital letter or two.  Spaces are considered special characters so a complete sentence will work as a network password.  Such as "My dogs name is Spot!"

After five (5) failed computer login attempts your account is locked.  The lock stays in place for ten (10) minutes from the last failed attempt.  If you tried three times and get it on the fourth try

You have the ability to change your password at any time by using Ctrl-Alt-Delete.

The server remembers your last three (3) passwords.