In the network connection as shown in the figure, SWA and SWB are Layer 3 switches, running STP+VRRP, and after the initial configuration is completed, SWA is the root of STP and Master SWC of VRRP is the Layer 2 switch, which is connected to the following terminals. The description about the network link failure is correct

In the network connection as shown in the figure, SWA and SWB are Layer 3 switches, running STP+VRRP, and after the initial configuration is completed, SWA is the root of STP and Master SWC of VRRP is the Layer 2 switch, which is connected to the following terminals. The description about the network link failure is correct

A . When the link between SWB and SWC is interrupted, the port status on the remaining STP links remains unchanged, and Forwarding is still maintained
B . When the link between SWB and SWC is interrupted, VRRP Master will remain unchanged, and SWC downstream terminals can still communicate normally
C . When only the link between SWB and SWC is intact in the figure, both SVVA and SWB will become VRRP masters, and the lower end of SWC can communicate with the gateway normally.
D . When only the link between SWB and SWC is intact in the figure, the VRRP Master will remain unchanged, but the SWC downstream terminal cannot communicate with the gateway

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Answer: AB