19. Which of the following would be the most appropriate way to protect data in transit?

Answer: C

Explanation:

TLS 1.3 is the most appropriate way to protect data in transit.

TLS 1.3 provides advanced encryption protocols designed specifically for securing data during transmission, making it the best choice among the options presented.

A) SHA-256

SHA-256 is a cryptographic hash function that is primarily used for data integrity verification rather than encryption. While it ensures that data has not been altered, it does not encrypt data in transit, thus failing to provide the necessary protection during transmission.

B) SSL 3.0

SSL 3.0 is an outdated and insecure protocol that has known vulnerabilities and is no longer recommended for use. It does not meet modern security standards and is therefore not an appropriate method for protecting data in transit.

C) TLS 1.3

TLS 1.3 is the most current and secure protocol for encrypting data in transit. It offers enhanced security features and improved performance over its predecessors, effectively safeguarding data against interception and tampering.

D) AES-256

AES-256 is a symmetric encryption algorithm used for securing data at rest and in transit. However, it is not a protocol itself; rather, it can be employed within protocols like TLS. Therefore, while it is strong encryption, it does not directly address the transmission aspect without being part of a protocol like TLS.

Conclusion

TLS 1.3 stands out as the most suitable option for protecting data in transit due to its robust encryption capabilities and updated security features. In contrast, SHA-256, SSL 3.0, and AES-256 either lack direct applicability to data transmission or do not meet current security standards, making them less effective choices.