What is the name of the unclassified subnetwork of the Defense Information System Network (DISN)?

The unclassified subnetwork of the Defense Information System Network (DISN) is known as NIPERNET. NIPERNET (Non-classified Internet Protocol Router Network) provides a secure and unclassified environment for military and government users to exchange information and conduct their business operations. It enables the use of standard Internet protocols for unclassified communications, which is essential for daily operations and coordination within the Department of Defense and other federal agencies.

Understanding the role and function of NIPERNET is vital, as it supports a significant amount of general communication needs while maintaining security protocols to protect sensitive information from unauthorized access. This is crucial in an environment where secure and efficient communication is paramount for national defense and operations.

In contrast, the other networks mentioned serve different purposes: SIPRNET (Secret Internet Protocol Router Network) is used for classified information, JWICS (Joint Worldwide Intelligence Communication System) handles top-secret information, and GIG (Global Information Grid) is the overarching framework that encompasses a range of networks including both classified and unclassified systems. Each of these networks has specific roles and classifications that cater to distinct operational requirements.