A company has a VoIP solution that is managed by a third party. The company wants to isolate the VoIP traffic
at the IP level so that:
VoIP devices have their own IP addressing.
The third-party provider can only access the VoIP network.
The company does not want to isolate the traffic at Layer 1 or 2. Which approach should the company take to
accomplish this goal?

A.
Implement MDC and create an MDC for the VoIP network.

B.
Implement EVI and create a unique network ID for the VoIP network.

C.
Implement SPBM and assign the VoIP traffic to its own I-SID.

D.
Implement MCE and create a VPN instance for the VoIP network.

Explanation:
http://h10032.www1.hp.com/ctg/Manual/c03187007