Which component handles joining/leaving the net and the exchange of time sync and encryption keys in Link 16?

• A. Network Management messages.
• B. The user terminal only.
• C. Maintenance crews.
• D. Encryption modules.

Answer: (A)

In Link 16, joining and leaving the net, along with distributing time synchronization and encryption keys, is handled by Network Management messages. These control-plane messages manage who participates, ensure all participants stay time-synchronized, and securely distribute crypto material so devices can encrypt traffic in real time. The user terminal handles user data, encryption modules perform crypto operations but don’t manage network membership or key distribution, and maintenance crews aren’t involved in dynamic network control.