要获悉当前交换机是哪些VLAN的根网桥,可使用下面哪两个命令?() A.show spanning-treeB.show root allC.show spann-ing-tree port root VLAND.show spanning-tree summary
要获悉当前交换机是哪些VLAN的根网桥,可使用下面哪两个命令?()
A.show spanning-tree
B.show root all
C.show spann-ing-tree port root VLAN
D.show spanning-tree summary
相关考题：
下面用于在交换机中配置Trunk承载的VLAN的命令是( ) A、access vlan vlan-idB、port link-type trunkC、port trunk allow-pass vlanD、set port vlan vlan-id
配置STP协议时，为选择交换机的根端口，不需要比较以下(52)参数。A．Root IDB．Designated Bridge IDC．Designated Port IDD．Port Speed
如下图所示，网桥 A、B、C 连接多个以太网。已知网桥 A 为根网桥，各个网桥的 a、b、 f 端口为指定端口。那么按照快速生成树协议标准 IEEE 802.1d-2004，网桥 B 的 c 端口为（ ）。A.根端口（Root Port）B.指定端口（Designated Port）C.备份端口（Backup Port）D.替代端口（Alternate Port）
要确保交换机成为VLAN30的根网桥,可使用下面哪两个命令之一?() A.spanning-tree vlan 30 priority 0B.spanning-tree vlan 30 priority 16384C.spanning-tree vlan 30 root guaranteeD.spanning-tree vlan 30 root primary
下面是你在一台交换机上执行命令show spanning－tree时得到的输出:请问下面哪两种有关这台交换机的说法是正确的?() A.这台交换机是根网桥B.这台交换机不是根网桥C.根网桥与这台交换机之间有4台交换机D.这台交换机运行的是802.1wE.这台交换机运行的是STP PVST+
从端口上收到一个更优的配置BPDU之后,重新计算根交换机、根端口和根路径开销的过程将被启动。对此计算过程描述正确的是:() A.比较所有的端口上Designated Root，Designated Cost和端口Cost之和，Designated Bridge和Designated Port的值，从中选出最优参数的端口，并且此端口上记录的Designated Root要比交换机自身的Bridge Identifier更优先，此端口即为根端口B.选择出根端口之后，更新交换机全局参数Designated Root为根端口记录的Designated Root；更新交换机全局参数Root Path Cost为根端口记录的Designated Cost与根端口的Port Cost之和C.如果任何端口记录的Designated Root参数都不比交换机自身的Bridge Identifier更优先，则交换机全局参数Designated Root设置为交换机自身的Bridge Identifier；交换机全局参数Root Path Cost设置为0D.根交换机，根端口，根路径开销计算完成并更新了交换机全局参数之后，开始启动指定端口选择过程E.以上说法都不正确
在STP协议中,信息是通过BPDU协议报文进行传输的,在配置BPDU参数中,用来表示“发送此配置BPDU的交换机所认为的根交换机的交换机标识”的属性段是() A.Root IdentifierB.Root Path CostC.Bridge IdentifierD.Port Identifier
●下面Linux命令中， (62)可用于关闭系统。(62)A. [root@root]#init 0B. [root@root]# init 1C.[root@root]# init 2D. [root@root]#init 3
图5-5是在某交换机配置过程中，在配置模式下执行(30)命令的系统输出信息。A．show spanning-treeB．show spanning-tree vlan 1C．show spanning-tree detailD．show spanning-tree summary
能够将分布交换机配置为生成树的主根交换机的命令是（）。A、spanning-tree vlan vlan-id primaryB、spanning-tree vlan vlan-id root primaryC、spanning-tree root primaryD、spanning-tree bridge root
What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology？（）A、lowest port MAC addressB、port priority number and MAC addressC、VTP revision numberD、highest port priority numberE、path cost
What is the STP root guard feature designed to prevent？（）A、a root port being transitioned to the blocking stateB、a port being assigned as a root portC、a port being assigned as an alternate portD、a root port being transitioned to the forwarding state
What value is primarily used to determine which port becomes the root port on each non root switch in a spanning-tree topology?（）A、path costB、lowest port MAC addressC、VTP revision numberD、highest port priority numberE、port priority number and MAC address
Which configuration is used to enable root guard？（）A、interface gig3/1 spanning-tree guard rootB、interface gig3/1 spanning-tree root guardC、interface gig3/1 spanning-tree root-guardD、interface gig3/1 spanning-tree root-guard default
以下关于生成树协议的端口角色的描述不正确的是？（）A、生成树协议（STP）的端口角色有根端口（Root Port），指定端口（Designated Port）和备份端口（BackupPort）；快速生成树协议（RSTP）的端口角色有根端口（Root Port）、指定端口（Designated Port），备份端口（Backup Port）和预备端口（Alternate Port）。B、生成树协议（STP）的端口角色有根端口（Root Port），指定端口（Designated Port）和预备端口（AlternatePort）；快速生成树协议（RSTP）的端口角色有根端口（Root Port）、指定端口（Designated Port），备份端口（Backup Port）和预备端口（Alternate Port）。C、预备端口（Alternate Port）所属交换机是该端口所连接的网段的指定交换机。D、备份端口（Backup Port）所属交换机不是该端口所连接的网段的指定交换机，是RSTP特有的端口角色。
Which of the following characteristics describe the Root Guard feature？（Choose all that apply.）（）A、The port must be put into forwarding state manually after root-inconsistent state has beencorrectedB、A Root Guard port receiving superior BPDU goes into a root-inconsistent stateC、A Root Guard port receiving inferior BPDU goes into a root-inconsistent stateD、While the port is in a root-inconsistent state no user data is sent across that portE、The port returns to a forwarding state if inferior BPDUs stopF、It should be applied to all switch ports
Which three options are considered in the spanning-tree decision process？（）A、lowest root bridge IDB、lowest path cost to root bridgeC、lowest sender bridge IDD、highest port IDE、highest root bridge IDF、highest path cost to root bridge
What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology?（）A、lowest port MAC addressB、port priority number and MAC address.C、VTP revision numberD、highest port priority number.E、path cost
Which four Cisco Spanning Tree Protocol enhancements are supported with rapid per-VLAN Spanning-Tree plus?（）A、PortFastB、UplinkFastC、loop guardD、root guardE、BPDU guardF、BackboneFast
单选题能够将分布交换机配置为生成树的主根交换机的命令是（）。Aspanning-tree vlan vlan-id primaryBspanning-tree vlan vlan-id root primaryCspanning-tree root primaryDspanning-tree bridge root
多选题Which three options are considered in the spanning-tree decision process？（）Alowest root bridge IDBlowest path cost to root bridgeClowest sender bridge IDDhighest port IDEhighest root bridge IDFhighest path cost to root bridge
单选题What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology?（）Alowest port MAC addressBport priority number and MAC address.CVTP revision numberDhighest port priority number.Epath cost
单选题What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology？（）Alowest port MAC addressBport priority number and MAC addressCVTP revision numberDhighest port priority numberEpath cost
单选题What value is primarily used to determine which port becomes the root port on each non root switch in a spanning-tree topology?（）Apath costBlowest port MAC addressCVTP revision numberDhighest port priority numberEport priority number and MAC address
单选题What is the STP root guard feature designed to prevent？（）Aa root port being transitioned to the blocking stateBa port being assigned as a root portCa port being assigned as an alternate portDa root port being transitioned to the forwarding state