What role does a Primary User (PRU) play in maintaining synchronization?

The role of a Primary User (PRU) in maintaining synchronization is primarily centered around using Round-Trip Time (RTT) exchanges. RTT is essential in network protocols for measuring the time it takes for a signal to travel from the sender to the receiver and back. In joint military operations, maintaining synchronization is crucial for effective communication and coordination among various units.

By employing RTT exchanges, a Primary User can accurately gauge the timing and latency of communications across the network. This capability ensures that all participating units are updated in real-time and are operating in harmony with one another, which is vital in dynamic operational environments. Having a precise understanding of timing helps in coordinating actions, relaying data accurately, and ensuring that all units are synchronized in their operations.

Other options, while related to the broader operational context, do not directly address the specific function of the Primary User in maintaining synchronization.