In the switching network shown in the figure, VLAN10 is set as isolate-user-vlan on switch SWA, VLAN2 and VLAN3 are secondary VLANs of VLAN 10; VLAN2-VLAN20 is created on switch SWB, and VLAN20 is set as isolate-user-vlan, and VLAN4 is the secondary VLA of VLAN20. After setting the IP addresses of each device as shown in the figure, which of the following statement is correct?

In the switching network shown in the figure, VLAN10 is set as isolate-user-vlan on switch SWA, VLAN2 and VLAN3 are secondary VLANs of VLAN 10; VLAN2-VLAN20 is created on switch SWB, and VLAN20 is set as isolate-user-vlan, and VLAN4 is the secondary VLA of VLAN20. After setting the IP addresses of each device as shown in the figure, which of the following statement is correct?

A . The PCA message enters from the GigabitEthem1/0/1 port of SWA and comes out from the GigabitEthem1/0/3 port with the VLAN Tag VLAN 1
B . PCA’s message comes out of SWA’s GigabitEthem1/0/3 port and enters SWB’s GigabitEthem1/0/4 port. The VLAN tag it carries is VLAN 10.
C . When SWB accesses PCA, the message from SWB’s GigabitEth1/0/4 does not carry a VLAN Tag
D . SWB’s message enters from SWA’s GigabitEthem1/0/3 port and leaves from GigabitEthem1/0/1 port with the VLAN tag VLAN10.

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Answer: C