Given: ABC Company is implementing a QoS enabled infrastructure that will support both voice and data. The WLAN controller is connected to one of three core layer-3 Ethernet switches. Each core layer-3 Ethernet switch has multiple edge layer-2 Ethernet switches attached. Lightweight APs are connected to all edge layer-2 Ethernet switches. The WLAN controller is on subnet 10.1.1.0/24, and the APs are on numerous other subnets. The APs are connected to the WLAN controller via LWAPP tunnels.

When IEEE 802.11 frames arrive at a lightweight AP from a QoS STA that need to be sent to the WLAN controller, which bits can the AP mark to signal the layer-2 and layer-3 Ethernet switches to use higher priority processing?

A.
The Ethernet frame’s 802.1Q priority tag bits

B.
The IP header’s TOS bits

C.
The IEEE 802.11 frame’s QoS Control bits

D.
The LWAPP header’s C bit

E.
The UDP header’s PRI bits