You get a call from a user who has just purchased a Windows

You get a call from a user who has just purchased a Windows 7 computer. She was installing a PDF reader when her desktop dimmed and a dialog box appeared asking her if she wanted to continue. What just happened?

A. Her antivirus program detected malware that was about to be installed.

B. This is the default action of User Account Control.

C. User Account Control detected malware that was about to be installed.

D. She does not have permissions to install this program and must log in as an administrator.

Solution

B. User Account Control (UAC) is a feature introduced in Windows Vista and present in Windows 7 that detects changes about to be made on the computer requiring administrator permissions. The default behavior dims the desktop and prompts you to give permission to install the program with administrator privileges as a security measure.