单项选择题
A. switchport access vlan vlan-id
B. switchport
C. switchport mode access
D. no switchport
E. None of the other alternatives apply
单项选择题 Refer to the exhibit. The user who is connected to interface FastEthernet 0/1 is on VLAN 10 and cannot access network resources. On the basis of the information in the exhibit， which command sequence would correct the problem？（）
单项选择题 Refer to the exhibit. Switch S2 contains the default configuration. Switches S1 and S3 both have had the command spanning-tree mode rapid-pvst issued on them. What will be the result？（）
单项选择题 The network administrator maps VLAN 10 through 20 to MST instance 2. How will this information be propagated to all appropriate switches？（）