You are familiar with Cisco network and now deploying the network for YourDomain.com, so which feature you know that Cisco guarantee security for a Cisco Unified Communications solution?

A.
A Cisco Unified Communications solution is always more secure than traditional phone systems.

B.
Cisco has a set of design guidelines and software services that, when implemented, will secure the network against known vulnerabilities, such as virus attacks, service attacks, and hackers.

C.
Cisco uses proprietary protocols that protect against known vulnerabilities, such as virus attacks, service attacks, and hackers.

D.
Because a Cisco Unified Communications solution is isolated from the data network, it protects against known vulnerabilities, such as virus attacks, service attacks, and hackers.