Which of the following are the major categories of IDSs response options?

A.
Active responses

B.
Passive responses

C.
Hybrid

D.
All of the choices.

Explanation:
Once IDSs have obtained event information and analyzed it to find symptoms of attacks,
they generate responses. Some of these responses involve reporting results and findings
to a pre-specified location. Others involve more active automated responses. Though
researchers are tempted to underrate the importance of good response functions in IDSs,
they are actually very important. Commercial IDSs support a wide range of response
options, often categorized as active responses, passive responses, or some mixture of
the two.