Computer Science for IGCSE & O level - Data Transmission (Section 12 - No. 25)
What is the main function of encryption?
To increase the speed of data transfer.
To prevent unauthorized access to data.
To reduce the file size of data.
To create a digital signature.
Giải thích
Encryption's primary purpose is to ensure data confidentiality by making it unreadable to those without the proper key.