单项选择题
Which of the following should you enable to prevent a switch from forwarding packets with source addresses that are outside an administratively defined group？ （）
A. DAI
B. STP
C. PVLAN
D. port security
相关考题
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单项选择题
Refer to the exhibit. The switchport output in Figure 1 displays the default settings of interface FastEthernet 0/13 on switch SW1. Figure 2 displays the desired interface settings. Which command sequence would configure interface FastEthernet 0/13 as displayed in Figure 2？ （）
A. SW1（config-if）# switchport trunk encapsulation dot1q SW1（config-if）# switchport mode trunk SW1（config-if）# switchport trunk native DATA SW1（config-if）# switchport trunk allowed vlan 1，10，20
B. SW1（config-if）# switchport trunk encapsulation dot1q SW1（config-if）# switchport mode dynamic auto SW1（config-if）# switchport trunk native DATA SW1（config-if）# witchport trunk allowed vlan add 1，10，20
C. SW1（config-if）# switchport trunk encapsulation dot1q SW1（config-if）# switchport mode dynamic desirable SW1（config-if）# switchport trunk native vlan DATA SW1（config-if）# switchport trunk allowed vlan 1，10，20
D. SW1（config-if）# switchport trunk encapsulation dot1q SW1（config-if）# switchport mode dynamic desirable SW1（config-if）# switchport trunk native vlan 10 SW1（config-if）# switchport trunk allowed vlan 1，10，20
E. SW1（config-if）# switchport trunk encapsulation dot1q SW1（config-if）# switchport mode dynamic Desirable SW1（config-if）# switchport trunk native vlan 10 -
单项选择题
You need make configuration changes to an existing layer 3 switch in the Company network. On a multilayer Catalyst switch， which interface command is used to convert a Layer 3 interface to a Layer 2 interface？（）
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？（）
A. SW1（config）# vlan 10SW1（config-vlan）# no shut
B. SW1（config）# interface fastethernet 0/1SW1（config-if）# switchport mode accessSW1（config-if）# switchport access vlan 10
C. SW1（config）# interface fastethernet 0/1SW1（config-if）# switchport mode access
D. SW1（config）# vlan 10SW1（config-vlan）# state active
E. SW1（config）# interface fastethernet 0/1SW1（config-if）# no shut
