Explanation/Reference:
Explanation:
Egress filtering is the practice of monitoring and potentially restricting the flow of information outbound from one network to another. TCP/IP packets that are being sent out of the internal network are examined via a router, firewall, or similar edge device.
Similarly, ingress filtering is used to ensure that incoming packets are actually from the networks from which they claim to originate.
Incorrect Answers:
B: Egress and ingress filtering can be implemented on a firewall, but not through dial-up.
C: Egress and ingress filtering can be implemented on a firewall, but not through passwords.
D: Egress and ingress filtering can be implemented on a firewall, but not fiber optics.
References:
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 631

Explanation/Reference:
Explanation:
The question states that you are looking at recorded events on closed-circuit TV camera. This is a detective control. The purpose of a detective control is to identify an incident's activities after it took place.
Examples or detective controls are cameras, logs, investigations and IDS.
Incorrect Answers:
A: Preventative controls are intended to avoid an incident from occurring. In this question, the event has occurred. Therefore, this answer is incorrect.
C: Compensating control are controls that provide an alternative measure of control. This is not what is described in the question. Therefore, this answer is incorrect.
D: Corrective controls fix components or systems after an incident has occurred. Watching camera footage does not fix anything. Therefore, this answer is incorrect.
References:
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, p. 30

The first step in the access control process is identifying who the subject is.