212-81 practice question 5 of 30

What is the largest key size that AES can use?

Full set: 206 questions
Answer options
A: 256 Correct answer
B: 56
C: 512
D: 128
Correct Answer:
A. 256
Explanation

256 https://en.wikipedia.org/wiki/Advanced_Encryption_Standard For AES, NIST selected three members of the Rijndael family, each with a block size of 128 bits, but three different key lengths: 128, 192 and 256 bits.

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