Final answer:
The Chief Audit Executive reports on internal assessments to senior management and the board at a frequency that ensures regular communication, which can vary but often occurs quarterly, semi-annually, or annually.
Step-by-step explanation:
The frequency at which the Chief Audit Executive (CAE) reports the results of internal assessments to senior management and the board is not universally set and can vary based on the organization's needs, the nature of its business, and regulatory requirements. However, it is essential for the CAE to provide these reports at a frequency that ensures regular communication and oversight. This enables both the agency and its political principals to have an ongoing understanding of the organization's performance and areas for improvement. Typically, reporting may occur quarterly, semi-annually, or annually, but it could be more frequent in a rapidly changing business environment.