In the switching network shown in the figure , VLAN 10 is set as Isolate-user-vlan on switch SWA , and VLAN 2 and VLAN 3 are Secondary VLANs of VLAN 10 ; VLAN 4 and VLAN 20 are created on switch SWB , and VLAN 20 is set as Isolate-user-vlan, and VLAN 4 is Secondary VLAN of VLAN 20. After setting the IP addresses of each device as shown in the figure , check the MAC address table on SWB , and you can determine that SWA belongs to which of the following?

In the switching network shown in the figure , VLAN 10 is set as Isolate-user-vlan on switch SWA , and VLAN 2 and VLAN 3 are Secondary VLANs of VLAN 10 ; VLAN 4 and VLAN 20 are created on switch SWB , and VLAN 20 is set as Isolate-user-vlan, and VLAN 4 is Secondary VLAN of VLAN 20. After setting the IP addresses of each device as shown in the figure , check the MAC address table on SWB , and you can determine that SWA belongs to which of the following?

A . VLAN 1
B . VLAN 2
C . VLAN 3
D . VLAN 4
E . VLAN 10
F . VLAN 20

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Answer: F