The IS management of a multinational company is considering upgrading its existing virtual private network
(VPN) to support voice-over IP (VoIP) communications via tunneling. Which of the following considerations
should be PRIMARILY addressed?

A.
Reliability and quality of service (QoS)

B.
Means of authentication

C.
Privacy of voice transmissions

D.
Confidentiality of data transmissions

Explanation:
The company currently has a VPN; issues such as authentication and confidentiality have been implemented by
the VPN using tunneling. Privacy of voice transmissions is provided by the VPN protocol. Reliability and QoS
are, therefore, the primary considerations to be addressed.