CCNA: Cisco Certified Network Associate — Question 693

What is a characteristic of RSA?

Answer options

• A. It uses preshared keys for encryption.
• B. It is a public-key cryptosystem.
• C. It is a private-key encryption algorithm.
• D. It requires both sides to have identical keys.

Correct answer: B

Explanation

The correct answer is B, as RSA is fundamentally a public-key cryptosystem, which means it uses a pair of keys for encryption and decryption. Options A, C, and D are incorrect because they describe characteristics of symmetric encryption, where the same key is used for both encryption and decryption, which is not applicable to RSA.