Which of the following best describes an external intrusion attempt on a local-area network (LAN)?

A.
Internal users try to gain unauthorized access to information assets outside the organizational perimeter.

B.
External-intrusion attempts from sources outside the LAN are not granted permissions or rights to an organization’s information assets.

C.
External users attempt to access public resources.

D.
External intruders attempt exploitation of vulnerabilities, to remove their own access.

E.
Internal users perform inappropriate acts on assets to which they have been given rights or permissions.