The switch SWA and SWB are connected together by two optical fiber Gigabit Ethernet links. The switch SWA has the following interface configuration:

The switch SWA and SWB are connected together by two optical fiber Gigabit Ethernet links. The switch SWA has the following interface configuration:

[SWA]interface GigabitEthernet 1/0/1

[SWA-GigabitEthernet1/0/1]gvrp

[SWA-GigabitEthernet1/0/1]port link-type trunk

[SWA-GigabitEthernet1/0/1]port trunk permit vlan 1 10

[SWA]interface GigabitEthernet 1/0/2

[SWA-GigabitEthernet1/0/2]port link-type trunk

[SWA-GigabitEthernet1/0/2]port trunk permit vlan 1 10

It can be seen from the above
A . GigabitEthernet1/0/1 and GigabitEthe1/0/2 cannot join the same aggregation group
B . Only by changing the configuration of GigabitEthe1/0/2 to be consistent with GigabitEthe1/0/1, can they join the same aggregation group
C . If SWA4 is switched to enable MSTP, one of GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 will be blocked
D . If MSTP is enabled on the SWA switch, GigabitEthe1/0/1 and GigabitEthe1/0/2 can participate in forwarding

Answer: D