Hosts PCA, PCB and PCC are connected to GigabitEthernet1/0/1, Ethernet1/0/2 and Ethernet1/0/3 ports of switch SWA respectively, and their addresses are in the same network segment. Configure
[SWA] vlan 10
[SWA-vlan10] port ethernet 1/0/1
[SWA-vlan10] quit
[SWA] vlan 20
[SWA-vlan20] port ethernet 1/0/2
[SWA-vlan20] quit
[SWA] vlan 30
[SWA-vlan30] port ethernet 1/0/3
[SWA-vlan30] quit
[SWA] interface ethernet 1/0/1
[SWA-Ethernet1/0/1] port link-type hybrid
[SWA-Ethernet1/0/1] port hybrid vlan 10 30 untagged
[SWA-Ethernet1/0/1] quit
[SWA] interface ethernet 1/0/2
[SWA-Ethernet1/0/2] port link-type hybrid
[SWA-Ethernet1/0/2] port hybrid vlan 20 30 untagged
[SWA-Ethernet1/0/2] quit
[SWA] interface ethernet 1/0/3
[SWA-Ethernet1/0/3] port link-type hybrid
[SWA-Ethernet1/0/3] port hybrid vlan 10 20 30 untagged
what can we learn from the above information? (Multiple choice)