You are reviewing the Application log on a Windows computer.

In theCCST Cybersecuritycourse, Windows Event ViewerErrorevents in the Application log indicate a severe problem that caused an application or component to fail. This usually requires investigation or repair.

"Error events indicate a significant problem such as a loss of functionality in an application or system component. Errors are often critical and need immediate attention."

(CCST Cybersecurity,Incident Handling, Event Logging and Analysis section, Cisco Networking Academy)

Ais incorrect: Performance slowness would usually generate warnings, not errors.

Bis correct: An "Error" level in Event Viewer means the application failed in some way.

Cis incorrect: That describes an "Information" event, not an error.

Dis incorrect: That also corresponds to an "Information" event.