CMS专题
单选题What is the effect of applying the switchport trunk encapsulation dot1q command to a port on a Cisco Catalyst switch？（）A By default， native VLAN packets going out this port will be tagged.B Without an encapsulation command， 802.1Q will be the default e
题目
By default， native VLAN packets going out this port will be tagged.
Without an encapsulation command， 802.1Q will be the default encapsulation if DTP fails to negotiate a trunking protocol.
The interface will support the reception of tagged and untagged traffic.
If the device connected to this port is not 802.1Q-enabled， it will not be able to handle 802.1Q packets.
参考答案和解析
相似问题和答案
第1题：
以下哪个命令用于创建一个trunk?
A、switchport mode trunk
B、switchport trunk enable
C、switchport trunk
D、trunk enable
A．
B．
C．
D．
第2题：
A.trunk on
B.set port trunk on
C.switchport mode tag
D.switchport mode trunk
第3题：
A.Switch（config-if）#Switchport trunk allowed remove 5
B.Switch（config-if）#Switchport trunk remove 5
C.Switch（config-if）#Switchport trunk Vlan allowed remove 5
D.Switch（config-if）#Switchport trunk allowed Vlan remove 5
第4题：
S2126交换机如何将接口设置为TAGVLAN模式？（）
- A、trunk on
- B、set port trunk on
- C、switchport mode tag
- D、switchport mode trunk
正确答案:D
第5题：
锐捷交换机VLAN修剪命令格式是下列哪条命令？（）
- A、switchport trunk allowed vlan remove vid
- B、switchport trunk remove vid
- C、switchport trunk prune vid
- D、switchport trunk allowed vid
正确答案:A
第6题：
You are bringing up a new Ezonexam switch, and wish to connect it via a trunk to another switch from a different vendor, which uses the IEEE standard for the trunking method. When setting the encapsulation type on the trunk, what should you configure on the Cisco switch?
A．Switch(config)# switchport trunk encapsulation isl
B．Switch(config)# switchport trunk encapsulation ietf
C．Switch(config-if)# switchport trunk encapsulation isl
D．Switch(config-if)# switchport trunk encapsulation ietf
E．Switch(config-if)# switchport trunk encapsulation dot1q
解析：Explanation:
The only real choices for setting up switching trunks are ISL and 802.1Q. ISL is Cisco proprietary, while 802.1Q uses the IEEE defined standard for trunking between switches.
To configure the 802.1Q standard, the keyword "dot1q" is used in Cisco switches.
Incorrect Answers:
A, B, D. These are not valid options in a Cisco switch.
C. ISL is a Cisco proprietary method for setting up trunks, and will only work between Cisco switches.
第7题：
Which configuration option will cause the link between two Cisco 3600 Series Multiservice Platforms to become a functional trunk？（）
- A、switchport dynamic auto switchport dynamic auto
- B、switchport access vlan 10 switchport mode dynamic desireable
- C、switchport mode trunk switchport nonegotiate
- D、Leave both ports with the default trunk settings
正确答案:B
第8题：
如下图所示，3com和Cisco公司的交换机相互连接，在两台交换机之间需传输ULANID为1、10、20和30的4个VLAN信息，Catalyst 3548交换机VLAN Trunk的正确配置是
A．Switch-3548 (config-if) #switchport trunk encapsulation dot 1 q Switch-3548 (config-if) #switchport trunk allowed vlan 1,10,20,30
B．Switch-3548 (config-if) #switchport mode trunk Switch-3548 (config-if) #switchport trunk encapsulation isl Switch-3548 (config-if) #switchport trunk allowed vlan 1-30
C．Switch-3548 (config-if) #switchport mode trunk Switch-3548 (config-if) #switchport trunk encapsulation negotiate Switch-3548 (config-if) #switchport trunk allowed vlan 1-30
D．Switch-3548 (config-if) #switchport mode trunk Switch-3548 (config-if) #switchport trunk encapsulation dot 1q Switch-3548 (config-if) #switchport trunk allowed vlan 1,10,20,30
第9题：
如果要把交换机Trunk的许可VLAN列表改为默认的许可所有VLAN的状态，应该使用命令（）
- A、no switchporttrunkallowedvlan
- B、default switchpor t trunkallowed vlan
- C、switchport trunk allowed vlan reset
- D、reset switchport trunk allowed vlan
正确答案:A
第10题：
switchport mode trunk命令用来将二层端口配置成trunk端口。
正确答案:正确