Which statement correctly describes Interference Protection Feature and Time Slot Duty Factor in Link 16?

• A. Interference Protocol Function; new encryption.
• B. Integrated Protocol Filter; controls data rate.
• C. Initial Pulse Frequency; a data rate parameter.
• D. Interference Protection Feature; reduces interference and terminates transmission if interference exists.

Answer: (D)

In Link 16, the Interference Protection Feature is designed to keep the network clear of harmful interference by actively monitoring the channel and taking action when interference is detected. If interference exists, it can terminate transmission to prevent worsening the congestion and to protect other users’ transmissions. This behavior—detecting interference and stopping transmission to preserve network integrity—is what the Interference Protection Feature is all about. Time Slot Duty Factor is a separate concept that governs how much of a time slot a terminal may transmit, effectively shaping data rate and channel occupancy to keep access orderly. The option that describes the Interference Protection Feature and its response to interference is the best match because it directly captures how IPF protects the link by reducing impact on the channel and terminating when interference is present. The other choices mix in encryption, data rate control, or incorrect technical terms, which don’t describe the interference protection behavior accurately.