Computer Science for IGCSE & O level - Data Transmission (Section 14 - No. 32)

What is the primary difference between symmetric and asymmetric encryption?

Symmetric uses one key, asymmetric uses two keys.

Symmetric is slower, asymmetric is faster.

Symmetric is more secure, asymmetric is less secure.

Symmetric is for encryption, asymmetric is for decryption.

The key difference is the number and usage of keys.