What are three benefits of the Cisco IOS integrated advanced technology capabilities that are a part of all Cisco devices including security, wireless, and voice? (Choose three.)

A.
This approach takes advantage of existing network devices.

B.
This approach builds off of the existing network infrastructure.

C.
This approach would force customers to upgrade to an end-to-end Cisco network.

D.
This approach creates a lower cost of ownership.

E.
This approach requires a multi-vendor solution.

F.
This approach requires a two-pronged vendor solution.