Which of the following functions is performed by a virtual private network (VPN)?
Hiding information from sniffers on the net
Enforcing security policies
Detecting misuse or mistakes
A VPN hides information from sniffers on the net using encryption. It works based on tunneling. A
VPN does not analyze information packets and, therefore, cannot enforce security policies, it also
does not check the content of packets, so it cannot detect misuse or mistakes. A VPN also does
not perform an authentication function and, therefore, cannot regulate access.