Computer Science for IGCSE & O level - Data Transmission (Section 3 - No. 22)
What does the term 'encryption key' refer to?
The address of a device on the network.
The secret code used to encrypt or decrypt data.
The data itself.
The process of sending data over the internet.
Explication
An encryption key is used to encrypt or decrypt data, making it unreadable without the key.