Isaca Updated CISM Exam Questions and Answers by quinn

 Business managers are best suited to determine the recovery time objectives (RTOs) for their business processes and functions, as they have the knowledge and authority to assess the impact of downtime and the acceptable level of service continuity. RTOs are the maximum acceptable time that a business process or function can be disrupted before it causes significant harm to the organization’s objectives, reputation, or compliance. References = CISM Review Manual, 16th Edition, Chapter 5, Section 5.2.1.11

An anomaly-based intrusion detection system (IDS) operates by gathering data on normal network behavior and using it as a baseline for measuring abnormal activity. This is important because it allows the IDS to detect any activity that is outside of the normal range of usage for the network, which can help to identify potential malicious activity or security threats. Additionally, the IDS will monitor for any changes in the baseline behavior and alert the administrator if any irregularities are detected. By contrast, signature-based IDSs operate by gathering attack pattern signatures from historical data and comparing them against incoming traffic in order to identify malicious activity.

A business impact analysis (BIA) is a process that identifies and evaluates the potential effects of disruptions to critical business operations as a result of a disaster, accident, emergency, or threat. A BIA helps to determine the business continuity requirements and priorities for recovery of business functions and processes, including their dependencies on IT systems, applications, and data. A BIA also provides information on the financial and operational impacts of a disruption, the recovery time objectives (RTOs), the recovery point objectives (RPOs), and the minimum service levels for each business function and process. A BIA is an essential input for designing a disaster recovery plan (DRP), which is a documented and approved set of procedures and arrangements to enable an organization to respond to a disaster and resume its critical functions within a predetermined timeframe. A DRP must be based on the BIA results to ensure that the system restoration is prioritized according to the business needs and expectations. A DRP must also consider the availability and suitability of the recovery resources, such as backup systems, alternate sites, and personnel. A DRP should be tested and updated regularly to ensure its effectiveness and alignment with the changing business environment and requirements. References = CISM Review Manual, 15th Edition, pages 175-1761; CISM Review Questions, Answers & Explanations Database, question ID 2182; Working Toward a Managed, Mature Business Continuity Plan - ISACA3; Part Two: Business Continuity and Disaster Recovery Plans - CISM Foundations: Module 4 Course4.

A BIA is an important part of Disaster Recovery Planning (DRP). It helps identify the impact of a disruption on the organization, including the critical systems and processes that must be recovered in order to minimize that impact. The BIA results are used to prioritize system restoration and determine the resources needed to get the organization back into operation as quickly as possible.

 The primary purpose of business continuity and disaster recovery plans is to ensure that the organization can resume its critical business functions within the stated recovery time objectives (RTOs) after a disruptive event. RTOs are based on the business needs and the impact analysis of each function or process. Therefore, meeting the business needs is the best indicator that the plans are effective. Regulatory requirements, internal compliance requirements, and risk management objectives are important factors that influence the development and testing of the plans, but they are not the ultimate measure of their effectiveness. References = CISM Certified Information Security Manager Study Guide, Chapter 9: Business Continuity and Disaster Recovery, page 3071; CISM Foundations: Module 4 Course, Part Two: Business Continuity and Disaster Recovery Plans2; Imperva, Business Continuity & Disaster Recovery Planning (BCP & DRP)3