What Sort of Application Might Require the Promiscuous Mode Security

Multiple Choice

What sort of application might require the promiscuous mode security policy to be configured to "accept" in order to support?

A) A web server with multiple virtual host configurations.
B) An e-mail server that utilizes load balancing features.
C) A clustered application that shares its IP address with other instances.
D) A network monitoring application such as an intrusion detection system (IDS) .