Which network security feature helps protect against unauthorized data access and ensures confidentiality of sensitive information?

Which network security feature helps protect against unauthorized data access and ensures confidentiality of sensitive information?
A . Firewall
B . VPN
C . Intrusion Detection System
D . Antivirus

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Answer: B

Explanation:

Option 1: Incorrect. A firewall is responsible for controlling incoming and outgoing network traffic based on predetermined security rules. While it can help protect against unauthorized access, it does not specifically ensure confidentiality of sensitive information.

Option 2: Correct. A VPN (Virtual Private Network) creates a secure, encrypted connection between a user’s device and a private network, such as a corporate network, over the internet. This helps protect against unauthorized data access and ensures the confidentiality of sensitive information.

Option 3: Incorrect. An Intrusion Detection System (IDS) monitors network traffic for suspicious activity or known attack patterns.

While it can help detect and alert to potential unauthorized access attempts, it does not specifically ensure confidentiality of sensitive information.

Option 4: Incorrect. An antivirus software is used to detect, prevent, and remove malware infections. While it can help protect against unauthorized access, it does not specifically ensure confidentiality of sensitive information.