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单选题
The classic Spanning Tree Protocol （802.1 D 1998） uses which sequence of variables to determine thebest received BPDU？（）
A
1） lowest root bridge id，2） lowest sender bridge id，3） lowest port id，4） lowest root path cost
B
1） lowest root path cost，2） lowest root bridge id，3） lowest sender bridge id，4） lowest sender port id
C
1） lowest root bridge id，2） lowest sender bridge id，3） lowest root path cost，4） lowest sender port id
D
1） lowest root bridge id，2） lowest root path cost，3） lowest sender bridge id，4） lowest sender port id
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考题
要在交换机上运行802.1w,可使用哪个命令来启用该协议?()
A.Switch(config)#spanning-tree mode rapid-pvstB.Switch#spanning-tree mode rapid-pvstC.Switch(config)#spanning-tree mode 802.1wD.Switch#spanning-tree mode 802.1w
考题
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
考题
Which command enhances the 802.1D convergence time on ports that are connected to hosts?()
A. spanning-tree backbonefastB. spanning-tree uplinkfastC. spanning-tree portfastD. spanning-tree cost512
考题
Which two of these are used in the selection of a root bridge in a network utilizing Spanning Tree Protocol IEEE 802.1D？ （）A、Designated Root CostB、bridge ID priorityC、max ageD、bridge ID MAC addressE、Designated Root PriorityF、forward delay
考题
Which spanning Tree Protocol has been implemented on switch 2？ （）A、STP/IEEE 802.1DB、MSTP/IEEE 802.1sC、PVST+D、PVRSTE、None of the other alternatives apply
考题
Which four Cisco priority Spanning Tree Protocol enhancements are supported with rapid per-VLAN Spanning Tree？ （）A、 PortFastB、 UplinkFastC、 loop guardD、 root guardE、 BPDU guardF、 BackboneFast
考题
Which of the following conditions guarantees that a broadcast storm cannot occur？（）A、a native VLAN mismatch on either side of an 802.1Q linkB、BPDU filter configured on a link to another switchC、Spanning Tree Protocol enabled on both Layer 2 and multilayer switchesD、PortFast enabled on all access and trunk ports
考题
The classic Spanning Tree Protocol （802.1D 1998） uses which sequence of variables to determine the best received BPDU？（）A、 1） lowest root bridge id，2）lowest sender bridge id，3）lowest port id，4）lowest root path costB、 1） lowest root path cost，2）lowest root bridge id，3）lowest sender bridge id，4）lowest sender port idC、 1） lowest root bridge id，2）lowest sender bridge id，3）lowest root path cost 4）owest sender port idD、 1） lowest root bridge id，2）lowest root path cost，3）lowest sender bridge id，4）lowest sender port id
考题
pany uses MSTP within their switched LAN. What is the main purpose of Multiple Instance Spanning Tree Protocol （MSTP）？（）A、 To enhance Spanning Tree troubleshooting on multilayer switchesB、 To reduce the total number of spanning tree instances necessary for a particular topology C、 To provide faster convergence when topology changes occur in a switched networkD、 To provide protection for STP when a link is unidirectional and BPDUs are being sent but not receivedE、 None of the other alternatives apply
考题
For the following ports， which port is on every bridge in a Spanning Tree Protocol IEEE 802.1w network except the root bridge？（）A、root portB、backup portC、designated portD、alternate port
考题
Spanning Tree Protocol IEEE 802.1s defines the ability to deploy which of these？ （）A、one global STP instance for all VLANsB、one STP instance for each VLANC、one STP instance per set of VLANsD、one STP instance per set of bridges
考题
Under which two circumstances should Spanning Tree Protocol be implemented？ （）A、 to ensure a loop-free topologyB、 to protect against user-side loopsC、 when a VLAN spans access layer switchesD、 for the most deterministic and highly available network topologyE、 because of the risk of lost connectivity without Spanning Tree Protocol
考题
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
考题
Which of the following specifications is a companion to the IEEE 802.1w Rapid Spanning Tree Protocol （RSTP） algorithm， and warrants the use multiple spanning-trees？ （）A、 IEEE 802.1s （MST）B、 IEEE 802.1Q （CST）C、 Cisco PVST+D、 IEEE 802.1d （STP）E、 None of the other alternatives apply
考题
Which command enhances the 802.1D convergence time on ports that are connected to hosts?（）A、spanning-tree backbonefastB、spanning-tree uplinkfastC、spanning-tree portfastD、spanning-tree cost512
考题
Which two statements about the various implementations of STP are true？（）A、mon Spanning Tree maintains a separate spanning-tree instance for each VLAN configured in the network.B、The Spanning Tree Protocol （STP） is an evolution of the IEEE 802.1w standard.C、Per-VLAN Spanning Tree （PVST） supports 802.1Q trunking.D、Per-VLAN Spanning Tree Plus（PVST+） is an enhancement to 802.1Q specification and is supported only on Cisco devices.E、Rapid Spanning Tree Protocol （RSTP） includes features equivalent to Cisco PortFast， UplinkFast， and BackboneFast for faster network reconvergence.F、Multiple Spanning Tree （MST） assumes one spanning-tree instance for the entire Layer 2 network， regardless of the multiple number of VLANs
考题
单选题Which standard supports multiple instances of spanning tree？（）A
802.1DB
802.1sC
802.1wD
802.1z
考题
多选题Which four Cisco priority Spanning Tree Protocol enhancements are supported with rapid per-VLAN Spanning Tree？ （）APortFastBUplinkFastCloop guardDroot guardEBPDU guardFBackboneFast
考题
单选题Spanning Tree Protocol IEEE 802.1 s defines the ability to deploy which of these？（）A
one global STP instance for all VLANsB
one STP instance for each VLANC
one STP instance per set of VLANsD
one STP instance per set of bridges
考题
单选题The classic Spanning Tree Protocol （802.1D 1998） uses which sequence of variables to determine the best received BPDU？（）A
lowest root bridge id；lowest sender bridge id；lowest port id；lowest root path costB
lowest root path cost；lowest root bridge id；lowest sender bridge id；lowest sender port idC
lowest root bridge id；lowest sender bridge id；lowest root path cost；lowest sender port idD
lowest root bridge id；lowest root path cost；lowest sender bridge id；lowest sender port id
考题
单选题The classic Spanning Tree Protocol （802.1D 1998） uses which sequence of variables to determine the best received BPDU？（）A
1） lowest root bridge id，2）lowest sender bridge id，3）lowest port id，4）lowest root path costB
1） lowest root path cost，2）lowest root bridge id，3）lowest sender bridge id，4）lowest sender port idC
1） lowest root bridge id，2）lowest sender bridge id，3）lowest root path cost 4）owest sender port idD
1） lowest root bridge id，2）lowest root path cost，3）lowest sender bridge id，4）lowest sender port id
考题
多选题Which two statements about the various implementations of STP are true？（）Amon Spanning Tree maintains a separate spanning-tree instance for each VLAN configured in the network.BThe Spanning Tree Protocol （STP） is an evolution of the IEEE 802.1w standard.CPer-VLAN Spanning Tree （PVST） supports 802.1Q trunking.DPer-VLAN Spanning Tree Plus（PVST+） is an enhancement to 802.1Q specification and is supported only on Cisco devices.ERapid Spanning Tree Protocol （RSTP） includes features equivalent to Cisco PortFast， UplinkFast， and BackboneFast for faster network reconvergence.FMultiple Spanning Tree （MST） assumes one spanning-tree instance for the entire Layer 2 network， regardless of the multiple number of VLANs
考题
单选题Spanning Tree Protocol IEEE 802.1s defines the ability to deploy which of these？（）A
one global STP instance for all VLANsB
one STP instance for each VLANC
one STP instance per set of VLANsD
one STP instance per set of bridges
考题
多选题Which two of these are used in the selection of a root bridge in a network utilizing Spanning Tree Protocol IEEE 802.1D？ （）ADesignated Root CostBbridge ID priorityCmax ageDbridge ID MAC addressEDesignated Root PriorityFforward delay
考题
多选题Which four Cisco Spanning Tree Protocol enhancements are supported with rapid per-VLAN Spanning-Tree plus?（）APortFastBUplinkFastCloop guardDroot guardEBPDU guardFBackboneFast
考题
单选题Which spanning Tree Protocol has been implemented on switch 2？ （）A
STP/IEEE 802.1DB
MSTP/IEEE 802.1sC
PVST+D
PVRSTE
None of the other alternatives apply
考题
单选题Which of the following specifications is a companion to the IEEE 802.1w Rapid Spanning Tree Protocol （RSTP） algorithm， and warrants the use multiple spanning-trees？ （）A
IEEE 802.1s （MST）B
IEEE 802.1Q （CST）C
Cisco PVST+D
IEEE 802.1d （STP）E
None of the other alternatives apply
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