You are the administrator of a multicontext transparent-mode Cisco ASA that uses a shared interface
that belongs to more than one context. Because the same interface will be used within all three
contexts, which statement describes how you will ensure that return traffic will reach the correct
context?
A.
Interfaces may not be shared between contexts in routed mode.
B.
Configure a unique MAC address per context with the no mac-address auto command.
C.
Configure a unique MAC address per context with the mac-address auto command.
D.
Use static routes on the Cisco ASA to ensure that traffic reaches the correct context.
Answer is correct:
“In multiple context mode, the ASASM now converts the automatic MAC address generation configuration to use a default prefix”
https://www.cisco.com/c/en/us/td/docs/security/asa/asa84/asdm65/configuration_guide/asa_cfg_asdm_65/mode_contexts.html#wp1134937