Which three statements are correct about connecting Cisco devices to a non-Cisco 802.1Q cloud?

Your organization is purchasing Cisco devices as well as non-Cisco devices for switching.
Which three statements are correct about connecting Cisco devices to a non-Cisco 802.1Q cloud? (Choose three.)
A. Because Cisco devices transmit BPDUs to the SSTP multicast MAC address on VLANs other than the native VLAN of the trunk, non-Cisco devices do not recognize these frames as BPDUs and flood them on all ports in the corresponding VLAN.
B. Cisco devices connected to the non-Cisco 802.1Q cloud receive these flooded BPDUs. This BPDU reception allows Cisco switches to maintain a per-VLAN spanning tree topology across a cloud of non-Cisco 802.1Q devices.
C. The non-Cisco 802.1Q cloud that separates the Cisco devices is treated as a single broadcast segment between all devices connected to the non-Cisco 802.1Q cloud through 802.1Q trunks.
D. Because Cisco devices transmit BPDUs using the industry standard IEEE 802.1D spanning tree multicast MAC address (01-80-C2-00-00-00), the non-Cisco 802.1Q cloud will seamlessly participate in spanning tree protocol.
E. Only layer 3 connections will work between Cisco devices and non-Cisco 802.1 cloud.
F. Additional equipment will be needed to transmit traffic between Cisco devices and non-Cisco 802.1Q cloud direct connectivity is not possible

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