1) Computer system #1 need logon passwords to be five upper-case letters. Specify different passwords available there for the system #1? Computer system #2 need logon passwords to be five characters, that may be upper or lower-case letters, the numbers 0 through 9, and the characters $ and %. State how many different passwords are there for system #2?
2) Assume an HTTPS page links to an HTTP iframe where two are loaded from several origins. Should the browser display a warning dialog? If so describe why. If not, describe why not.