CISA Exam Dumps - Certified Information Systems Auditor

The best way to determine whether IT investments are meeting business objectives is to compare the realized return on investment (ROI) versus the projected ROI (Option B). This approach measures actual performance against planned expectations.

ISACA CISA Reference: The ISACA IT Governance framework emphasizes performance measurement through ROI analysis, ensuring IT investments align with strategic objectives.

Risk Implication: If actual ROI is lower than projected, this may indicate ineffective investment decisions, poor execution, or misalignment with business goals.

Alternative Choices:

Option A: Break-even analysis only determines when an investment recoups its costs but does not measure performance against business objectives.

Option C: Budgeted versus actual spend assesses financial discipline but does not indicate business impact.

Option D: Industry average ROI provides benchmarking but does not assess internal goal achievement.

 The best performance indicator for the effectiveness of an incident management program is the incident resolution meantime. This is the average time it takes to resolve an incident from the moment it is reported to the moment it is closed. The incident resolution meantime reflects how quickly and efficiently the incident management team can restore normal service and minimize the impact of incidents on the business operations and customer satisfaction.

The average time between incidents (option A) is not a good performance indicator for the effectiveness of an incident management program, as it does not measure how well the incidents are handled or resolved. It only shows how frequently the incidents occur, which may depend on various factors beyond the control of the incident management team, such as the complexity and reliability of the systems, the security threats and vulnerabilities, and the user behavior and expectations.

The incident alert meantime (option B) is the average time it takes to detect and report an incident. While this is an important metric for measuring the responsiveness and awareness of the incident management team, it does not indicate how effective the incident management program is in resolving the incidents and restoring normal service.

The number of incidents reported (option C) is also not a good performance indicator for the effectiveness of an incident management program, as it does not reflect how well the incidents are handled or resolved. It only shows how many incidents are identified and recorded, which may vary depending on the reporting channels, tools, and procedures used by the incident management team and the users.

Therefore, option D is the correct answer.

 A proper audit trail of changes to server start-up procedures would include evidence of operator overrides, which are actions taken by the system operator to bypass or modify the normal execution of the server start-up process. Operator overrides may indicate unauthorized or improper changes that could affect the security, availability, or performance of the server. Therefore, an audit trail should capture and document any operator overrides that occur during the server start-up process.

Evidence of subsystem structure, program execution, and security control options are not directly related to changes to server start-up procedures. Subsystem structure refers to the components and relationships of a subsystem within a larger system. Program execution refers to the process of running a software program on a computer. Security control options refer to the settings and parameters that define the security level and access rights for a system or application. These are all important aspects of auditing a server, but they do not provide evidence of changes to server start-up procedures.

 File checksums are values that are calculated from the contents of a file and can detect any changes or corruption in the file. They are used to verify that the files that are transferred or processed through system interfaces are not altered in any way. File checksums are more effective than periodic audits, file counts, or IT operator monitoring, which are other types of controls that can help ensure the integrity of system interfaces, but they are not as reliable or timely as file checksums.

The finding that should be ranked as the highest risk is that network penetration tests are not performed. Network penetration tests are simulated cyberattacks that aim to identify and exploit the vulnerabilities and weaknesses of the network security controls, such as firewalls, routers, switches, servers, and devices. Network penetration tests are essential for assessing the effectiveness and resilience of the network security posture, and for providing recommendations for improvement and remediation. If network penetration tests are not performed, the organization may not be aware of the existing or potential threats and risks to its network, and may not be able to prevent or respond to real cyberattacks, which can result in data breaches, service disruptions, financial losses, reputational damage, and legal or regulatory penalties. The other findings are also important, butnot as risky as the lack of network penetration tests, because they either do not directly affect the networksecurity controls, or they can be addressed by documentation or approval processes. References: CISA Review Manual (Digital Version)1, Chapter 5, Section 5.2.4

Issuing authentication tokens is the most reliable method of preventing unauthorized logon, as it provides a strong form of authentication that requires users to present something they have (the token) and something they know (the personal identification number or PIN) to access the system. Authentication tokens are physical devices that generate a one-time password or code that changes periodically and is synchronized with the authentication server. This makes it difficult for attackers to steal or guess the credentials of legitimate users. Reinforcing current security policies, limiting after-hours usage and installing an automatic password generator are not as reliable as issuing authentication tokens, as they do not provide a strong form of authentication and may still be vulnerable to unauthorized logon attempts. References:

[Authentication Token Definition]

 Authentication | ISACA

The best answer is C. Periodically restoring backup media for key databases.

ISACA guidance is very clear that backup restoration should be tested periodically. A backup is only useful if it can actually be restored successfully within business needs. Organizations sometimes assume that because backups exist, recovery is assured, but ISACA specifically warns that recovery procedures and restoration capability must be tested.

Option A is important for resilience, but offsite storage does not prove the backup is recoverable. Option B helps administration and tracking, but inventory alone does not validate restorability. Option D protects confidentiality of backup data, but it does not ensure successful recovery. The strongest control for recoverability is periodic test restoration.

References (Official ISACA):

ISACA, Ensuring Data Security: The Importance of Cloud Backups and Drill Testing

ISACA Journal, Governance of Key Aspects of System Patch Management — recommends periodic testing of backup restoration.

ISACA Journal, IS Audit Basics: Backup and Recovery