A virtual private network (VPN) provides data confidentiality by using:

A. Secure Sockets Layer (SSL)

B. Tunneling

C. Digital signatures

D. Phishing

Explanation:

VPNs secure data in transit by encapsulating traffic, a process known as tunneling. SSL is a symmetric method of encryption between a server and a browser. Digital signatures are not used in the VPN process, while phishing is a form of a social engineering attack.