Which of the following defines a Virtual Private Network (VPN)?

• A. Wireless Local Area Network used for connecting to devices.
• B. Virtual Private Network a method of connecting to a network such as a company network across an unsecured network.
• C. Metropolitan Area Network spanning a city.
• D. Fiber optic communication using light.

Answer: (B)

The main idea here is that a VPN creates a secure, private communication channel over a public or untrusted network, so devices can access a private network as if they were directly connected. This matches the description of connecting to a network, such as a company network, across an unsecured network like the internet. The security comes from encryption and tunneling, which protect confidentiality and integrity as data travels over the untrusted path.

The other options describe different concepts: a Wireless Local Area Network is just local wireless connectivity, not about secure remote access; a Metropolitan Area Network is a city-wide network type, not specifically a private tunnel over the public Internet; fiber optic communication refers to the physical medium, not the virtual security/remote-access aspect.