Final answer:
Project Managers must conduct periodic reviews, testing, and assessment of IS and PIT systems at least annually. The frequency may vary based on organizational policies, data sensitivity, and systems categorization, potentially requiring more frequent reviews.
Step-by-step explanation:
The question pertains to the frequency with which Project Managers (PMs) must conduct periodic reviews, testing, and assessment of Information Systems (IS) and Platform Information Technology (PIT) systems. The standards for these activities, including the frequency, are often governed by organizational policies and regulations such as the National Institute of Standards and Technology (NIST) in the United States, which recommends that these reviews and assessments occur at least annually.
However, the specific frequency can vary depending on the organization's risk management framework, the classification of the information processed, and the operational need of the systems in question. In certain cases, more frequent reviews such as semi-annually or quarterly may be required, especially for systems with a higher security categorization or systems that process sensitive data.