Jack walks back to his desk and tries to log on to his computer. He receives a message that states he needs to contact his administrator because his account is locked. What could have been the probable cause?
A)An intruder has tried logging on to his system. On successive failed attempts, the account lockout policy has locked his PC.
B)The entire network is down.
C)He has left some application open on his computer, which has locked the system.
D)He needs to continue to try logging on. Eventually the system will allow him to log in.

Question

Quizplus · Accepted Answer

In this case, the account lockout policy has been activated on his computer.
Key Takeaway: In an account lockout attack, the attacker attempts to lock out all user accounts, typically by failing login as many times as the threshold defined by the authentication system. For example, if users are locked out of their accounts after three failed login attempts, an attacker can lock out their account for them simply by failing login three times.

Jack Walks Back to His Desk and Tries to Log