AFSC Cyberspace Operations Officer (17D) Block 4 Practice Exam

At the heart of this contrast is how the system uses the available spectrum. Conventional radio systems assign fixed channels to specific groups, so each channel is a dedicated frequency path and radios operate on that fixed channel without coordination by a central system. Trunked systems, on the other hand, share a pool of frequencies among many users, and a central controller dynamically assigns an available channel to a user when they press the PTT. This central computer control makes efficient use of the spectrum and increases capacity because conversations don’t require a pre-assigned fixed channel. That’s why the statement about trunked systems is correct: radios share frequencies in trunked systems, and a central computer handles the control and channel assignment. The other options don’t fit because conventional systems don’t rely on central computer control, trunked systems don’t use fixed frequencies for each conversation, and trunked systems don’t require radios to operate completely independently without centralized coordination.