Which of the following is a data protection technique that involves the transformation of data into a format that is unreadable to unauthorized users?

Which of the following is a data protection technique that involves the transformation of data into a format that is unreadable to unauthorized users?
A . Authentication
B . Encryption
C . Firewall
D . Intrusion Detection System

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Answer: B

Explanation:

Option 1: Incorrect. Authentication refers to the process of verifying the identity of a user or system.

Option 2: Correct. Encryption is a data protection technique that transforms data into a format that is unreadable to unauthorized users. It provides confidentiality and ensures that even if the data is intercepted, it cannot be easily understood.

Option 3: Incorrect. A firewall is a network security device that monitors and filters incoming and outgoing network traffic based on predetermined security rules.

Option 4: Incorrect. An Intrusion Detection System (IDS) is a security tool that monitors network traffic for suspicious activity or violations of security policies.