Data link communications in ADA share targeting data and status between sensors, shooters, and C2. Which is a common data link used in joint air defense operations?

• A. Ethernet
• B. Wi-Fi
• C. Bluetooth
• D. Link-16

Answer: (D)

Sharing real-time targeting data and status across sensors, shooters, and command and control requires a standardized, secure data link that can operate across services and allied nations. Link-16 is designed for exactly that role. It’s a joint tactical data link used by many services and partners to exchange track information, surveillance data, and engagement decisions in near real time, creating a shared situational picture for sensors, weapons systems, and C2 nodes. Its TDMA-based access, encryption, and frequency-hopping make it resilient and interoperable in contested environments, which is essential for coordinated air defense across components and allies. In contrast, Ethernet, Wi-Fi, and Bluetooth are civilian or local-area networks not built for the long-range, high-security, high-reilience demands of joint air defense operations, so they aren’t the standard tools for this purpose. Link-16 is the established data link that enables integrated operations across sensors, shooters, and C2.