A developer needs to utilize AES encryption in an application but requires the speed of encryption and decryption to be as fast as possible. The data that will be
secured is not sensitive so speed is valued over encryption complexity. Which of the following would BEST satisfy these requirements?

A.
AES with output feedback
B.
AES with cipher feedback
C.
AES with cipher block chaining
D.
AES with counter mode
Explanation:
CTR is used if you want good parallelization (ie. speed), instead of CBC/OFB/CFB.
The entire CompTIA Security book never mention this topic. It is unfair and not right to have this question on the real exam. How we confirm the correct answer!
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