An administrator has two servers and wants them to communicate with each other using a secure
algorithm.
Which of the following choose to provide both CRC integrity checks and RCA encryption?

A.
NTLM

B.
RSA

C.
CHAP

D.
ECDHE

Explanation:
ECDHE provides both CRC integrity checks and RCA encryption.
Adding an ephemeral key to Elliptic Curve Diffie-Hellman turns it into ECDHE. It is the ephemeral
component of each of these that provides the perfect forward secrecy.
Forward secrecy is a property of any key exchange system, which ensures that if one key is
compromised, subsequent keys will not also be compromised. Perfect forward secrecy occurs
when this process is unbreakable.