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WhileloggedintoaCompanyswitchyouissuethefollowingcommand:CompanySwitch(config－mst)instance10vlan11－12Whatdoesthiscommandaccomplish?()
A.ItenablesaPVST+instanceof10forvlan11andvlan12
B.Itenablesvlan11andvlan12tobepartoftheMSTregion10
C.Itmapsvlan11andvlan12totheMSTinstanceof10.
D.ItcreatesanInternalSpanningTree（IST）instanceof10forvlan11andvlan12
E.ItcreateaCommonSpanningTree（CST）instanceof10forvlan11andvlan12
F.ItstartstwoinstancesofMST，oneinstanceforvlan11andanotherinstanceforvlan12.
参考答案
更多 “ WhileloggedintoaCompanyswitchyouissuethefollowingcommand:CompanySwitch(config－mst)instance10vlan11－12Whatdoesthiscommandaccomplish?() A.ItenablesaPVST+instanceof10forvlan11andvlan12B.Itenablesvlan11andvlan12tobepartoftheMSTregion10C.Itmapsvlan11andvlan12totheMSTinstanceof10.D.ItcreatesanInternalSpanningTree（IST）instanceof10forvlan11andvlan12E.ItcreateaCommonSpanningTree（CST）instanceof10forvlan11andvlan12F.ItstartstwoinstancesofMST，oneinstanceforvlan11andanotherinstanceforvlan12. ” 相关考题
考题
试题三（25分）阅读以下关于某企业内部网络系统的叙述，回答问题1 至问题 3，将解答或相应的编号填入答题纸的对应栏内。【说明】 某企业网络拓扑结构如图3-1所示。根据企业要求实现负载均衡和冗余备份，构建无阻塞高性能网络的建设原则，该企业网络采用两台S7606万兆骨干路由交换机作为双核心，部门交换机S2924G通过光纤分别与两台核心交换机相连，通过防火墙和边界路由器与Internet相连。S7606之间相连的端口均为Trunk端口，S7606与S2924G之间相连的端口也均为Trunk端口。部分PC机IP信息及所属VLAN 如表3-1所示。【问题1】（9分）四台交换机都启用了MSTP生成树模式，其中S7606-1的相关配置如下：S7606-1 (config)spanning-tree mst 1 priority 4096 //缺省值是32768S7606-1 (config)spanning-tree mst configurationS7606-1 (config-mst)instance 1 vlan 10,12S7606-1 (config-mst)instance 2 vlan 9,11S7606-1 (config-mst)name region1S7606-1 (config-mst)revision 1S7606-2的相关配置如下：S7606-2 (config)spanning-tree mst 2 priority 4096S7606-2 (config)spanning-tree mst configurationS7606-2 (config-mst)instance 1 vlan 10,12S7606-2 (config-mst)instance 2 vlan 9,11S7606-2 (config-mst)name region1S7606-2 (config-mst)revision 1两台S2924G交换机也配置了相同的实例、域名称和版本修订号。（1）请问instance 2的生成树的根交换机是哪一台？为什么？（2）就instance 1而言，交换机S2924G-1的根端口是哪个端口？为什么？（3）请指出PC1发给PC5的数据包经过的设备路径。
考题
YouneedtoconfigureanewCompanyswitchfortrunking.WhichswitchcommandenablesatrunkingprotocolthatappendsafourbyteCRCtothepacket?()
A.CompanySwitch（config-if）#switchporttrunkencapsulationdot1qB.CompanySwitch（config-if）#switchporttrunkencapsulationitefC.CompanySwitch（config-if）#switchporttrunkencapsulationfddiD.CompanySwitch（config-if）#switchporttrunkencapsulationislE.Noneoftheotheralternativesapply
考题
While logged into a Company switch you issue the following command： CompanySwitch（config-mst）# instance 10 vlan 11-12 What does this command accomplish？（）A、 It enables a PVST+ instance of 10 for vlan 11 and vlan 12B、 It enables vlan 11 and vlan 12 to be part of the MST region 10C、 It maps vlan 11 and vlan 12 to the MST instance of 10.D、 It creates an Internal Spanning Tree （IST） instance of 10 for vlan 11 and vlan 12 E、 It create a Common Spanning Tree （CST） instance of 10 for vlan 11 and vlan 12F、 It starts two instances of MST， one instance for vlan 11 and another instance for vlan 12.
考题
You need to configure a new Company switch for trunking. Which switch command enables a trunking protocol that appends a four byte CRC to the packet？（）A、 CompanySwitch（config-if）#switchport trunk encapsulation dot1qB、 CompanySwitch（config-if）#switchport trunk encapsulation itefC、 CompanySwitch（config-if）#switchport trunk encapsulation fddiD、 CompanySwitch（config-if）#switchport trunk encapsulation islE、 None of the other alternatives apply
考题
单选题You need to configure a new Company switch for trunking. Which switch command enables a trunking protocol that appends a four byte CRC to the packet？（）A
CompanySwitch（config-if）#switchport trunk encapsulation dot1qB
CompanySwitch（config-if）#switchport trunk encapsulation itefC
CompanySwitch（config-if）#switchport trunk encapsulation fddiD
CompanySwitch（config-if）#switchport trunk encapsulation islE
None of the other alternatives apply
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