Bob sends Alice an encrypted message using AES. What key would Alice need to use to decrypt the message?
A. Bob's public key
B. Bob's private key
C. Alice's public key
D. The same key that Bob used to encrypt the message
Answer: D
Explanation: AES is a private/symmetric key algorithm. Symmetric key encryption uses one shared key to encrypt and decrypt data, so Alice needs to use the same key Bob used to encrypt the data to decrypt the message.
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