Locking Computers....?

I went to an interview today for an office position. I know quite a bit about computers. So, I thought. I was asked " If someone comes in the room and you don't want them to see what is on your screen, How do you lock your computer? She DID NOT mean password protection.....she meant a super quick way. Anyone know a quick way to lock and unlock your pc? By a keyboard function maybe???

Thanks

Locking Computers....?antivirus software

Ctrl+alt+del. Lock computer.

Quick key shortcut is windows button+L

Locking Computers....?computer virus

In Windows 2000 and Windows XP configured in a domain setting you can hit Ctrl-Alt-Del and then the space bar "Lock Workstation". With Xp in a home setting with the goofy blue login menu, you can hit the Window's Key-L to lock the screen. If you want to ensure that there's a password when using Win-L, make sure a password is set for your profile under Control Panel -%26gt; User Accounts -%26gt; Your Account -%26gt; Change My Password
Option 1

Put it in stand by mode

Option 2

CTRL-DEL-DEL

Then Press K

Option 3

Shut down your monitor.
Press the windows logo key and L and that instantly locks your computer, you must know the password though. For computers without a password all you do is click OK
Um..depeneds what system it is