What does encryption do to data before it's sent?

• A. It compresses it for faster transmission
• B. It converts it to an unreadable form
• C. It duplicates it for backup purposes
• D. It speeds up the connection rate

Answer: (B)

Encryption transforms data into an unreadable format to protect its confidentiality during transmission. This process involves using algorithms that scramble the original information, making it accessible only to those who have the correct decryption key or method. The primary purpose of encryption is to ensure that even if the data is intercepted while in transit, unauthorized parties will not be able to understand or utilize the information.

The other options suggest functionalities that do not accurately represent what encryption does. For instance, while compression relates to data transmission efficiency, it serves a different function that does not involve protecting the contents of the data itself. Similarly, duplicating data for backup purposes is a separate task not associated with encryption. Lastly, speeding up connection rates pertains to network performance rather than data security. Therefore, the essence of encryption is best captured by its ability to convert data into an unreadable form, ensuring privacy and security during transmission.