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In transport mode, the use of the Encapsulating Security Payload (ESP) protocol is advantageous
over the Authentication Header (AH) protocol because it provides:

A.
connectionless integrity.

B.
data origin authentication.

C.
antireplay service.

D.
confidentiality.

Explanation:
Both protocols support choices A, B and C, but only the ESP protocol provides confidentiality via
encryption.

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