CMS专题
单选题Switch A is configured with VLAN 105 and 106. Switch Bis configured with VLAN 105 and 107.Both switches are connected with a fiber cable. In order for packets from all VLANs to cross thefiber cable, which of the following configurations MUST be present
题目
Reverse ARP
Full duplex on the fiber link
PoE
802.1q trunking
相似问题和答案
第1题：
如果希望在Switch1中创建的VLAN信息也能在Switch2中使用，则分别在Switch1、Switch2上执行下列命令，请给出空白处的配置内容：
Switch1vlan database (设置VLAN配置子模式)
Switch1(vlan)vtp (4)
Switch1(vlan)vtp domain abc (设置域名)
Switch1(vlan)exit (退出VLAN配置模式)
Switch2vlan database (设置VLAN配置子模式)
Switch2(vlan)vtp (5)
Switch2(vlan)vtp domain abc (设置域名)
Switch2(vlan)exit (退出VLAN配置模式)
(4)server (5)client 解析：如果希望在Switch1中创建的VLAN信息也能在Switch2中使用，则需要创建VTP域，并将Switch1设置为server模式，把Switch2设置为client模式。
第2题：
An administrator is unsuccessful in adding VLAN 50 to aswitch. While troubleshooting the problem, the administrator views the output of the show vtp status command, which is displayed in the graphic. What commands must be issued on this switch to add VLAN 50 to the database?（）
A. Switch(config-if)# switchport access vlan 50
B. Switch(vlan)# vtp server
C. Switch(config)# config-revision 20
D. Switch(config)# vlan 50 name Tech
E. Switch(vlan)# vlan 50
F. Switch(vlan)# switchport trunk vlan 50
第3题：
A Ezonexam switch is configured with all ports assigned to VLAN 2. In addition, all ports are configured as full-duplex FastEthernet. What is the effect of adding switch ports to a new VLAN on this switch?
A．The additions will create more collisions domains.
B．IP address utilization will be more efficient.
C．More bandwidth will be required than was needed previously.
D．An additional broadcast domain will be created.
E．The possibility that switching loops will occur will increase dramatically.
解析：Explanation:
A VLAN is a group of hosts with a common set of requirements that communicate as if they were attached to the same wire, regardless of their physical location. A VLAN has the same attributes as a physical LAN, but it allows for end stations to be grouped together even if they are not located on the same LAN segment.
Networks that use the campus-wide or end-to-end VLANs logically segment a switched network based on the functions of an organization, project teams, or applications rather than on a physical or geographical basis. For example, all workstations and servers used by a particular workgroup can be connected to the same VLAN, regardless of their physical network connections or interaction with other workgroups.
Network reconfiguration can be done through software instead of physically relocating devices. Cisco recommends the use of local or geographic VLANs that segment the network based on IP subnets. Each wiring closet switch is on its own VLAN or subnet and traffic between each switch is routed by the router. The reasons for the Distribution Layer 3 switch and examples of a larger network using both the campus-wide and local VLAN models will be discussed later.
A VLAN can be thought of as a broadcast domain that exists within a defined set of switches. Ports on a switch can be grouped into VLANs in order to limit unicast, multicast, and broadcast traffic flooding. Flooded traffic originating from a particular VLAN is only flooded out ports belonging to that VLAN, including trunk ports, so a switch that connects to another switch will normally introduce an additional broadcast domain.
第4题：
A switch is configured with all ports assigned to vlan 2 with full duplex FastEthernet to segment existing departmental traffic. What is the effect of adding switch ports to a new VLAN on the switch?（）
- A、More collision domains will be created.
- B、IP address utilization will be more efficient.
- C、More bandwidth will be required than was needed previously.
- D、An additional broadcast domain will be created.
正确答案:D
第5题：
A.switch（config-vlan）#vlan100mediaethernetstateactive
B.switch（config）#vlan100mediaethernetstateactive
C.switch（config）#vlan100
D.switch（config-vlan）#vlan100
第6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
第7题：
AnadministratorisunsuccessfulinaddingVLAN50toaswitch.Whiletroubleshootingtheproblem，the administratorviewstheoutputoftheshowvtpstatuscommand，whichisdisplayedinthegraphic.WhatcommandsmustbeissuedonthisswitchtoaddVLAN50tothedatabase？（）
A.Switch（config-if）#switchportaccessvlan50
B.Switch（vlan）#vtpserver
C.Switch（config）#config-revision20
D.Switch（config）#vlan50nameTech
E.Switch（vlan）#vlan50
F.Switch（vlan）#switchporttrunkvlan50
第8题：
在Cisco Catalyst 3548以太网交换机上建立一个名为lib105的VLAN，下列正确的配置是______。
A) Switch-3548#vlan 1 name lib 105
Switch-3548#exit
B) Switch-3548(vlan)#vlan 1 name lib 105
Switch-3 548(vlan)#exit
C) Switch-3548(vlan)#vlan 1000 name lib 105
Switch3548(vlan)#exit
D) Swimh-3548(vlan)#vlan 1002 name lib 105
Switch-3548(vlan)#exit
A．
B．
C．
D．
第9题：
DCS-3726创建VLAN的命令正确的是（）。
- A、switch（config-vlan）#vlan100mediaethernetstateactive
- B、switch（config）#vlan100mediaethernetstateactive
- C、switch（config）#vlan100
- D、switch（config-vlan）#vlan100
正确答案:A
第10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