One way to determine control effectiveness is by determining:
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A. B. C. D.C.
Control effectiveness requires a process to verify that the control process worked as intended.
Examples such as dual-control or dual-entry bookkeeping provide verification and assurance that the process operated as intended.
The type of control is not relevant, and notification of failure is not determinative of control strength.
Reliability is not an indication of control strength; weak controls can be highly reliable, even if they are ineffective controls.
Control effectiveness refers to the ability of security controls to achieve their intended objectives. It is important to evaluate control effectiveness to ensure that security measures are working as expected and that risks are mitigated. One way to determine control effectiveness is by evaluating the test results of intended objectives.
Option A: Whether the control is preventive, detective, or compensatory is relevant for understanding the purpose of the control, but it does not directly relate to control effectiveness.
Option B: The capability of providing notification of failure is a useful aspect of control design, but it does not directly relate to control effectiveness. Even if a control is designed to provide notifications of failure, it does not mean that it is effective in mitigating risks.
Option C: Evaluating the test results of intended objectives is a good way to determine control effectiveness. The objective of security controls is to mitigate risks, and the test results can determine if the controls are working as intended.
Option D: Evaluation and analysis of reliability are important, but it is not enough to determine control effectiveness. Reliability alone does not guarantee that controls are effective in mitigating risks.
Therefore, option C is the most appropriate answer because it directly relates to evaluating the effectiveness of security controls.