What is the primary purpose of a VPN?

What is the primary purpose of a VPN?

• A. To create an encrypted tunnel between endpoints over an untrusted network
• B. To increase bandwidth between sites
• C. To replace DNS
• D. To route traffic via a separate private backbone

Answer: (A)

A VPN's primary purpose is to create an encrypted tunnel between endpoints over an untrusted network, such as the Internet. This tunnel protects data in transit by providing confidentiality, integrity, and authenticity, so eavesdroppers can’t read or tamper with the information and you can be sure you’re communicating with the intended party. This enables secure remote access and site-to-site connectivity, letting users and networks talk securely as if they were on a private network, even though the path is public. The encryption overhead can affect throughput, so VPNs don’t inherently increase bandwidth. It isn’t about replacing DNS or using a separate private backbone; those are separate concepts, while the VPN’s core role is secure transport over an untrusted network.

A VPN's primary purpose is to create an encrypted tunnel between endpoints over an untrusted network, such as the Internet. This tunnel protects data in transit by providing confidentiality, integrity, and authenticity, so eavesdroppers can’t read or tamper with the information and you can be sure you’re communicating with the intended party. This enables secure remote access and site-to-site connectivity, letting users and networks talk securely as if they were on a private network, even though the path is public. The encryption overhead can affect throughput, so VPNs don’t inherently increase bandwidth. It isn’t about replacing DNS or using a separate private backbone; those are separate concepts, while the VPN’s core role is secure transport over an untrusted network.