Which two statements about SNMP traps are true? (Choose two.)

A.
They are sent by an agent after a specified event.

B.
They are sent when solicited after a specified event.

C.
They are equivalent to a community string.

D.
They provide solicited data to the manager.

E.
They are sent by a management station to an agent.

F.
Vendor-specific traps can be configured.