Question:

Bill must leave his desk many times a day to attend to business concerns. These absences are for various periods of time. He has neglected to log out of his machine in the past, leaving it vulnerable while he is away. What can you do to prevent this security issue as the system administrator?

A Set up a screen saver with a password that will activate when the system is idle for a certain period of time.

explanation

Use a screensaver with a password would be the best solution, so that, the computer will be protected if he does walk away from his desk.