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When a new trunk is configured on a 2950 switch, which VLANs

题目
单选题
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

参考答案和解析
正确答案： C
解析： 暂无解析
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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：

A company has a small network,consisting of a single switch and a single router.The switch has been configured with two vlans,and route-on-a-stick is being configured on the router for inter-vlan routing.A trunk is configured to connect the switch to the router.What is the minimum number of router subinterfaces that are required for all the vlans to communicate?（）

A. one

B. three

C. two

D. zero


参考答案：C

第3题：

A new Ezonexam switch is installed into an existing LAN and a new VTP trunk is set up with an existing switch. Which VLANs will be allowed on this new trunk?

A．All defined VLANs are allowed on the trunk by default.

B．Each VLAN, or VLAN range, that is specified with the switchport mode command.

C．Each VLAN, or VLAN range, that is specified with the vtp domain command.

D．Each VLAN, or VLAN range, that is specified with the vlan database command.

E．None of the above


正确答案：A
解析：Explanation:
The question does not state that there are multiple VTP Domains meaning that all defined VLANs are allowed on the trunk until a vtp domain command is issued.

第4题：

Hosts on the same VLAN can communicate with each other but are unable to communicate with hosts on different VLANs. What is needed to allow communication between VLANs（）。

  • A、a switch with a trunk link that is configured between the switches
  • B、a router with an IP address on the physical interface that is connected to the switch
  • C、a switch with an access link that is configured between the switches
  • D、a router with subinterfaces configured on the physical interface that is connected to the switch

正确答案:D

第5题：

Which two statements about voice VLANs are correct？（）

  • A、Voice VLANs eliminate the need for QoS configuration
  • B、Voice VLANs are used on trunk links to eliminate the need for QoS CoS markings
  • C、Voice VLANs are mainly used to reduce the number of access switch ports that are used in the network
  • D、Voice VLANs can be configured to forward existing CoS priorities or override them
  • E、Voice VLANs are mainly used between access layer switches and distribution layer switches
  • F、Voice VLANs can be configured on Layer 2 ports only

正确答案:D,F

第6题：

A new switch is installed into an existing LAN and a new VTP trunk is set up with an existing switch. Which VLANs will be allowed on this new trunk?()

A. All defined VLANs are allowed on the trunk by default.

B. Each VLAN, or VLAN range, that is specified with the switchport mode command.

C. Each VLAN, or VLAN range, that is specified with the vtp domain command.

D. Each VLAN, or VLAN range, that is specified with the vlan database command.


参考答案：C

第7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：

You have configured voice VLANs on Catalyst switch R1.  Which two statements are true about the  operation of voice VLANs on this device？ （）

  • A、 When the voice VLAN feature is enabled， all untagged traffic is sent according to the default  CoS priority of the port.
  • B、 Enabling voice VLANs enables the switch to create multiple queues for traffic that is entering a  port.
  • C、 When voice VLANs are configured on a trunk link， UplinkFast must also be enabled.
  • D、 Voice VLANs are configured to enable the switch to forward frames marked with the proper  CoS values over separate physical links.
  • E、 Enabling voice VLANs enables the switch to forward frames with a specific 802.1P marking.

正确答案:A,E

第10题：

Which two statements are true about voice VLANs？（）

  • A、Voice VLANs are only used when connecting an IP phone and a host to distinct switch ports
  • B、Access ports that are configured with voice VLANs will always trust the CoS that is received from IP phones
  • C、Access ports that are configured with voice VLANs may or may not override the CoS value that is received from an IP phone
  • D、Voice VLANs are configured using the switchport voice vlan vlan-ID interface configuration command
  • E、Voice VLANs provide a trunking interface between an IP phone and an access port on a switch to allow traffic from multiple devices that are connected to the port
  • F、Enabling Voice VLAN on a switch port will automatically configure the port to trust the incoming CoS markings

正确答案:C,D

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