A Security Parameter Index (SPI) and the identity of the security protocol (AH or ESP) are the
components of:

A.
SSL

B.
IPSec

C.
S-HTTP

D.
SSH-2

Explanation:
The correct answer is IPSec. The SPI, AH and/or ESP and the destination IP address are components
of an IPSec Security Association (SA.) The other answers describe protocols other than IPSec.