What are trojan horse programs?

As an auditor it is very important to ensure confidentiality, integrity, authenticity and availability are implemented appropriately in an information system. Which of the following definitions incorrectly describes these parameters?

What is/are used to measure and ensure proper network capacity management and availability of services?

Which of the following statement correctly describes difference between packet filtering firewall and stateful inspection firewall?

What can be used to gather evidence of network attacks?

There are many firewall implementations provided by firewall manufacturers. Which of the following implementation utilize two packet filtering routers and a bastion host? This approach creates the most secure firewall system since it supports network and application level security while defining a separate DMZ.

Which of the following is a passive attack method used by intruders to determine potential network vulnerabilities?

Which of the following type of IDS has self-learning functionality and over a period of time will learned what is the expected behavior of a system?

Which of the following fire-suppression methods is considered to be the most environmentally friendly?

Which of the following type of an IDS resides on important systems like database, critical servers and monitors various internal resources of an operating system?