Final answer:
Splunk, which is used to analyze machine-generated data, would be accessed via the Intranet to examine NIPR Gateway traffic because it is a secure, private network designed for use within an organization, ensuring the protection of sensitive information.
Step-by-step explanation:
Splunk and Network Types
Splunk is a software platform widely used for monitoring, searching, analyzing, and visualizing machine-generated data in real-time. It is typically utilized in IT and security management. In the context of examining NIPR Gateway traffic, which refers to the Non-classified Internet Protocol Router Network used by the United States Department of Defense, the correct type of network to access Splunk would likely be the Intranet. The NIPR Gateway provides secure access to the Internet and is considered an internal network for government operations. Therefore, the Intranet, a private network accessible only to an organization's staff, would be the appropriate network type for accessing sensitive tools like Splunk in this context. Using the Internet, Extranet, or Local Area Network (LAN) could expose sensitive data to unauthorized users or networks.