The PRIMARY purpose of installing an intrusion detection system (IDS) is to identify:

A.
weaknesses in network security.

B.
patterns of suspicious access.

C.
how an attack was launched on the network.

D.
potential attacks on the internal network.

Explanation:

The most important function of an intrusion detection system (IDS) is to identify potential attacks
on the network. Identifying how the attack was launched is secondary. It is not designed
specifically to identify weaknesses in network security or to identify patterns of suspicious logon
attempts.