What is included in the PCI DSS Self-Assessment Questionnaire?

The inclusion of a set of questions used by organizations to assess their compliance directly aligns with the purpose of the PCI DSS Self-Assessment Questionnaire (SAQ). This document is designed to guide organizations, especially those that are smaller or processing lower volumes of transactions, in evaluating their adherence to the PCI DSS standards. The questions within the SAQ provide a structured approach for organizations to self-evaluate their security measures, ensuring that they understand and can demonstrate compliance with all relevant PCI requirements.

The other options focus on aspects that are not the primary function of the SAQ. Technical standards for data encryption are important components of the overall PCI DSS but are not specifically detailed in the SAQ itself. A checklist of physical security measures could be part of an organization's broader security policy but does not encapsulate the range of compliance assessments included in the SAQ. Finally, while the SAQ may reference PCI DSS requirements, it does not serve as a comprehensive summary of all PCI DSS requirements itself; rather, it focuses on the specific questions relevant to determining compliance for particular merchant environments.