How Does a Virtual Private Network (VPN)provide Additional Security Over

Multiple Choice

How does a virtual private network (VPN) provide additional security over other types of networks?

A) It requires a username and password for access.
B) It encrypts data packets prior to transmission.
C) Users are required to answer a set of "challenge questions" prior to being given access.
D) Users are required to pass a retinal scan,finger print scan or some other high level security test before they can access the network.