What type of encryption algorithm uses the same key to encrypt and decrypt data?
- Diffie-Hellman
- Shared-secret
- Public-key
- Asymmetric
Explanation: Symmetric encryption algorithms use the same key (also called shared secret) to encrypt and decrypt the data. In contrast, asymmetric encryption algorithms (also called public-key) use a pair of keys, one for encryption and another for decryption.
Exam with this question: CCNA Security Chapter 7 Exam Answers
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