Security plays an essential role in the Cisco Collaboration Architecture. In which layers of
the Cisco Collaboration Architecture is security implemented?

A.
Advanced Cisco security solutions are implemented in all layers of the Cisco
Collaboration Architecture model.

B.
Cisco security solutions are integrated into the infrastructure layer and partially into the
collaboration services layer.

C.
Security is implemented in all the layers except in the medianet services interface layer.

D.
Cisco provides advanced security solutions in the infrastructure and collaboration
services layers while the collaboration applications layer security is ensured by third-party
solutions.