What are two types of networks relevant to PCI DSS?

The choice highlighting the Cardholder Data Environment (CDE) and the internal network is particularly relevant to PCI DSS because it directly addresses the key areas that are of concern when handling payment card transactions and sensitive data. The CDE specifically refers to the environment where cardholder data is processed, stored, or transmitted, which is the main focus of PCI DSS requirements. Understanding and securing the CDE is vital to ensuring compliance and protecting cardholder information from breaches.

The internal network, while more general, refers to the network utilized by an organization to connect its devices and systems, including the CDE. Properly managing and securing the internal network is crucial for safeguarding the CDE and ensuring that access to sensitive information is tightly controlled.

In contrast, highlighting public and private networks does not specifically provide the clarity needed regarding PCI DSS compliance. Guest and administrative networks, while they may play a role in a broader security strategy, do not delineate the particularly sensitive areas of the PCI requirements. Similarly, Wi-Fi and wired networks focus on transmission mediums rather than the specific environments that handle cardholder data, which are critical to understanding PCI DSS standards.