This read-create QueueType field determines whether hardware queue 5 runs in EF strict-priority mode or WRR weighted mode. It's important because the mode choice defines the fundamental scheduling guarantee, always-first versus proportional-share, for whatever class of traffic is routed to queue 5. For example, an admin might switch queue 5 to EF temporarily while troubleshooting a latency-sensitive application to confirm the queue itself isn't the bottleneck.