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When a new trunk link is configured on an IOS based switch, 

题目
单选题
When a new trunk link is configured on an IOS based switch, which VLANs are allowed over the link?（）
A

By default， all defined VLANs are allowed on the trunk.

B

Each single VLAN， or VLAN range， must be specified with the switchport mode command.

C

Each single VLAN， or VLAN range， must be specified with the vtp domain command.

D

Each single VLAN， or VLAN range， must be specified with the vlan database command.

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相似问题和答案

第1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


正确答案：E
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2题：

Refer to the exhibit. Switch port FastEthernet 0/24 on AlSwitch1 will be used to create an IEEE 802.1Q- complaint trunk to another switch. Based on the output shown, What is the reason the trunk does not form, even thought the proper cabling has been attached?（）

A.VLANs have not been created yet

B.An IP address must be configured for the port

C.The port is currently configured for access mode

D.The correct encapsulation type has not been configured

E.The no shutdown command has not been entered for the port


参考答案：C

第3题：

You need to configure an 802.1Q link on a Ezonexam switch. Which commands, when used together, would do this? (Select two answer choices)

A. Switch(vlan) mode trunk

B. Switch(config) switchport access mode trunk

C. Switch(config-if) switchport mode trunk

D. Switch(config-if) switchport trunk encapsulation dot1q

E. Switch(config) switchport access mode 1

F. Switch(vlan) trunk encapsulation dot1q


正确答案：CD
C,D 解析：Explanation:
Creating this trunk link is a two step process. First you have to set the switchport mode to trunk, and then you configure the encapsulation. The giveaway on this question is the fact that to create a trunk on an interface, you have to be in interface configuration mode. So switchport mode trunk sets the trunk, and switchport trunk encapsulation dot1q sets the encapsulation.

第4题：

Which three statements about VTP features are true?（）

  • A、When properly configured,VTP minimizes VLAN misconfigurations and configuration inconsistencies
  • B、Each broadcast domain on a switch can have its own unique VTP domain
  • C、VTP works at Layer 3 of the OSI model and requires that a management VLAN IP address be configured.
  • D、When properly configured,VTP maintains VLAN configuration consistency and accelerates trunk link negotiation.
  • E、VTP pruning is used to increase available bandwidth in trunk links
  • F、Client,server,and transparent are valid VTP modes
  • G、To configure a switch to be part of two VTP domains,each domain must have its own passwords

正确答案:A,E,F

第5题：

When a new trunk is configured on a 2950 switch, which VLANs by default are allowed over the trunk link()。

A.no VLANs

B.all VLANs

C.only VLANs 1 - 64

D.only the VLANs that are specified when creating the trunk


参考答案：B

第6题：

Which commands, when used together, would create an 802.1Q link?()

A. Switch(vlan)# mode trunk

B. Switch(config)# switchport access mode trunk

C. Switch(config-if)# switchport mode trunk

D. Switch(config-if)# switchport trunk encapsulation dot1q

E. Switch(config)# switchport access mode 1

F. Switch(vlan)# trunk encapsulation dot1q


参考答案：C, D

第7题：

Which three statements about VTP features are true?()

A.When properly configured,VTP minimizes VLAN misconfigurations and configuration inconsistencies

B.Each broadcast domain on a switch can have its own unique VTP domain

C.VTP works at Layer 3 of the OSI model and requires that a management VLAN IP address be configured.

D.When properly configured,VTP maintains VLAN configuration consistency and accelerates trunk link negotiation.

E.VTP pruning is used to increase available bandwidth in trunk links

F.Client,server,and transparent are valid VTP modes

G. To configure a switch to be part of two VTP domains,each domain must have its own passwords


参考答案：A, E

第8题：

A new trunk has been configured on a switch in the Ezonexam LAN. By default, which VLANs are allowed over this trunk link?

A. No VLANs

B. Only the VLANs that are specified when creating the trunk

C. Only VLANs 1-64

D. All VLANs

E. All VLAN's except VLAN 1

F. None of the above


正确答案：D
D

第9题：

Which commands, when used together, would create an 802.1Q link?（）

  • A、Switch(vlan)# mode trunk
  • B、Switch(config)# switchport access mode trunk
  • C、Switch(config-if)# switchport mode trunk
  • D、Switch(config-if)# switchport trunk encapsulation dot1q
  • E、Switch(config)# switchport access mode 1
  • F、Switch(vlan)# trunk encapsulation dot1q

正确答案:C,D

第10题：

Switch R1 has been configured with DTP using the desirable option.  Which statement describes  Dynamic Trunking Protocol （DTP） desirable mode？（）

  • A、 The interface actively attempts to convert the link to a trunk link.
  • B、 The interface is put into permanent trunking mode but prevented from generating DTP frames.  
  • C、 The interface is put into permanent trunking mode and negotiates to convert the link into a trunk  link.
  • D、 The interface is put into a passive mode， waiting to convert the link to a trunk link.  
  • E、 None of the other alternatives apply

正确答案:A

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