Segregation of duties is a preventive control designed to mitigate fraud by ensuring that no single individual has control over all phases of a financial transaction. This control reduces the risk of errors and fraud by requiring the involvement of multiple people in tasks such as authorization, custody of assets, and record- keeping.
Institute of Internal Auditors (IIA) - Practice Advisories on Fraud Prevention and Control

According to the IIA ' s Standards, if it has been more than five years since the last external assessment was conducted, the Internal audit activity must cease indicating that it operates in conformance with the Standards.
Regular external assessments are required at least once every five years to validate that an internal audit activity continues to operate in conformance with the Standards.
Institute of Internal Auditors (IIA) - International Professional Practices Framework (IPPF)

In assessing the design of a training program for an organization's ethics program, the most relevant questions would be those that address the content of the training and the feedback mechanism used to foster ethical decision-making. Questions 1 and 4 directly relate to these aspects, examining if the training includes ethical decision-making scenarios and if there is feedback on the thought processes involved, which are critical for effective ethics training.
IIA guidance on auditing ethics programs, focusing on the effectiveness and design of training components.

According to the IIA guidance on using the maturity model for assessing an organization ' s risk management program, a key activity to examine is " Monitor and Review. " This element evaluates how well the organization continues to monitor its risk environment and reviews the effectiveness of risk management strategies over time. It is crucial for ensuring that risk management adapts to changes and continues to align with organizational objectives.
Institute of Internal Auditors (IIA) - Guidance on Risk Management Maturity Models

The most appropriate action for the chief audit executive to take when updating the internal audit charter is to perform a review of IIA guidance to become acquainted with the latest mandatory elements prior to updating the charter. This ensures that the charter will be updated according to the most current standards and practices required by the IIA. Staying updated with the latest guidance helps in maintaining compliance with professional standards and aligning the internal audit function's objectives and scope with organizational needs and regulatory expectations.
IIA's International Standards for the Professional Practice of Internal Auditing and guidance on internal audit charters.