将交换机的access端口ethernetO/1加入VLAN4,可用如下哪种方法配置(请选择2个答案)
A. [Switch]vlan4[Switch-vlan4]portethernet0/1
B. [Switch]vlan4[Switch-Ethernet0/1]portaccessvlan4
C. [Switch]vlan4[Switch-vlan4]portaccessethernet0/1
D. [Switch]vlan4[Switch-Ethernet0/1]portaccessvlanpvid4