Which of the following is a key benefit of data encryption?

• A. It allows for faster network traffic
• B. It makes data unreadable without a key
• C. It teaches security best practices
• D. It manages incoming traffic filters

Answer: (B)

The key benefit of data encryption is that it makes data unreadable without a key. This process transforms the original information into an encoded version, which can only be reverted to its original form through the appropriate decryption key. This ensures that even if an unauthorized party obtains the encrypted data, they would not be able to interpret or use it without access to the key, thus securing sensitive information from potential breaches. Encryption is fundamental in protecting data confidentiality and integrity, as it addresses the risks of data interception and unauthorized access.

The other options do not accurately represent the primary benefits of data encryption. Faster network traffic is not a direct consequence of encryption; in fact, encryption may introduce additional processing overhead due to the complexity of the algorithms involved. Teaching security best practices is more about education and awareness rather than a direct function of encryption technology itself. Managing incoming traffic filters pertains to network security controls rather than data encryption, which focuses on protecting data at rest or in transit.