Which of these is a benefit of ESM?

Which of these is a benefit of ESM?

A.
supports multiple MIBs

B.
includes NetFlow, NBAR, and IP SLA software subsystems

C.
includes NetFlow, syslog, and IP SLA software subsystems

D.
includes a predefined framework for filtering and correlating messages

E.
supports two logging processes so output can be sent in standard and ESM format