1. Right Answer: D
Explanation: The key requirement is to preserve availability of business operations. Choice A is a correct compliance requirement, but is not the main objective in this case.Choices B and C are supplementary requirements for business continuity/disaster recovery planning.
2. Right Answer: A
Explanation: Service level agreements (SLA) will be most effective in ensuring that Internet service providers (ISPs) comply with expectations for service availability. Intrusion detection system (IDS) and spam filtering services would not mitigate (as directly) the potential for service interruptions. A right-to-audit clause would not be effective in mitigating the likelihood of a service interruption.
3. Right Answer: B
Explanation: It is not always possible to provide adequate segregation of duties between programming and operations in order to meet certain business requirements. A mitigating control is to record all of the programmers' actions for later review by their supervisor, which would reduce the likelihood of any inappropriate action on the part of the programmer. Choices A, C and D do not solve the problem.
4. Right Answer: D
Explanation: The most effective mechanism to ensure that the organization's security standards are met by a third party, would be a legal agreement. Choices A. B and C are acceptable options, but not as comprehensive or as binding as a legal contract.
5. Right Answer: A
Explanation: If there are many firewall rules, there is a chance that a particular rule may allow an external connection although other associated rules are overridden. Due to the increasing number of rules, it becomes complex to test them and. over time, a loophole may occur.