1.(单选题) 某运行MSTP协议的交换机的端口角色如右下图所示,请问GigabitEthernet0/0/1端口在Instance1中的端口状态应该是?( )[Switch] display stp brief
MSTID Port Role
0 Ethernet0/0/1 DESI
0 GigabitEthernet0/0/1 ROOT
0 GigabitEthernet0/0/2 DESI
1 GigabitEthernet0/0/1 ALTE
1 GigabitEthernet0/0/2 ROOT
2 Ethernet0/0/1 DESI
2 GigabitEthernet0/0/1 DESI
2 GigabitEthernet0/0/2 ROOT