Which statement about the communication between interfaces on the same security level is
true?

A.
All Traffic is allowed by default between interfaces on the same security level.

B.
Interface on the same security level require additional configuration to permit inter-interface
communication.

C.
Configuring interface on the same security level can cause asymmetric routing.

D.
You can configure only one interface on an individual security level.

Explanation:
The following command allows traffic of the same security level:
hostname(config)# same-security-traffic permit inter-interface