Computer Science for IGCSE & O level - Data Transmission (Section 6 - No. 39)
In the context of data security, what does "encryption" achieve?
Makes data readable.
Protects data by converting it into an unreadable format.
Speeds up data transfer.
Compresses data.
Giải thích
Encryption is the process of converting data into an unreadable format to protect it from unauthorized access.