The switch SWA uses the factory default configuration. Now the Ethernet 1/0/1 port of the switch SWA should be configured as a trunk port, the PVID is VLAN20, and VLAN10 is allowed. The following configuration process is correct.

The switch SWA uses the factory default configuration. Now the Ethernet 1/0/1 port of the switch SWA should be configured as a trunk port, the PVID is VLAN20, and VLAN10 is allowed. The following configuration process is correct.
A . [SWA]vlan10
[SWA-vlan10]quit
[SWA]vlan 20
[SWA-vlan20]port Ethernet 1/0/1 [SWA-vlan20]quit
[SWA]interface Ethernet 1/0/1
[SWA-Ethernet1/0/1]port link-type trunk
[SWA-Ethernet1/0/1]port trunk permit vlan 10
B . [SWA]vlan10
[SWA-vlan10]quit
[SWA]vlan 20
[SWA-vlan20]quit
[SWA]interface Ethernet 1/0/1
[SWA-Ethernet1/0/1]port access vlan 20
[SWA-Ethernet1/0/1]port link-type trunk
[SWA-Ethernet1/0/1]port
trunk permit vlan 10
C . [SWA]vlan10
[SWA-vlan10]quit
[SWA]vian 20
[SWA-vlan20]quit
[SWA]interface Ethernet 1/0/1
[SWA-Ethernet1/0/1]port link-type trunk
[SWA-Ethernet1/0/1]port trunk pvid vlan 20
[SWA-Ethernet1 /0/1 ]port trunk permit vlan 10
D . [SWA]interfaceEthernet 1/0/1
[SWA-Ethernet1/0/1]port link-type trunk
[SWA-Ethernet1/0/1]port trunk pvid vlan 20
[SWA-Ethernet1/0/1]port trunk permit vlan 10
[SWA-Ethernet1/0/1]quit [SWA]vlan 10
[SWA-vlan10]quit[SWA]vlan 20