Which term describes a technology that allows encrypted tunnels to connect to an enterprise network?

Which term describes a technology that allows encrypted tunnels to connect to an enterprise network?

• A. Remote Access
• B. Network Access Control (NAC)
• C. Intrusion Detection System (IDS)
• D. Virtual Private Network (VPN)

Answer: (D)

The idea here is secure connectivity from outside the network. A Virtual Private Network creates an encrypted tunnel over an untrusted network (usually the Internet) that links a remote user’s device or a branch site to the enterprise network. This tunnel protects data in transit from eavesdropping and tampering and authenticates both ends, so you’re sure you’re reaching the right network. Because it directly supplies the encrypted tunnel needed for remote connections to the enterprise, VPN is the right term.

Remote access describes the ability for remote users to connect, but the specific technology that provides the encrypted tunnel is the VPN. NAC focuses on whether a device meets security requirements before gaining access, and IDS detects and reports on potential intrusions. Neither describes the encrypted tunnel mechanism itself.