Which statement about encryption is accurate?

Which statement about encryption is accurate?

• A. It slows network speed drastically
• B. It increases data size without benefit
• C. It makes data unreadable to unauthorized people
• D. It guarantees delivery of messages

Answer: (C)

Encryption hides the content by transforming readable information into ciphertext that only someone with the decryption key can read. This is exactly what keeps data unreadable to unauthorized people, preserving confidentiality even if the data is intercepted. The other ideas miss the primary goal: encryption doesn’t guarantee delivery, and while there can be some overhead or a slight size change, the main purpose is not to affect speed or data expansion.

Encryption hides the content by transforming readable information into ciphertext that only someone with the decryption key can read. This is exactly what keeps data unreadable to unauthorized people, preserving confidentiality even if the data is intercepted. The other ideas miss the primary goal: encryption doesn’t guarantee delivery, and while there can be some overhead or a slight size change, the main purpose is not to affect speed or data expansion.