One of the following assertions is NOT a characteristic of Internet Protocol Security (IPSec)

A.
Data cannot be read by unauthorized parties

B.
The identity of all IPsec endpoints are confirmed by other endpoints

C.
Data is delivered in the exact order in which it is sent

D.
The number of packets being exchanged can be counted.

Explanation:
IPSec uses the IP protocol to deliver packets. IP treats every packet independently, and the packets can arrive
out of order.
Incorrect Answers:
A: The Internet Protocol Security (IPSec) protocol suite provides a method of setting up a secure channel for
protected data exchange between two devices. IPSec data cannot be read by unauthorized parties.
B: IPSec, through the use of IKE (Internet Key Exchange), ensures the identity of each endpoint is confirmed by
the other endpoints.
D: An ESP packet, used by IPSec to transfer data, includes a Sequence Number which counts the packets that
have been transmitted.

Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 860