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单选题
Examine the following options，which Spanning Tree Protocol （STP） protection mechanism disables aswitch port if the port receives a Bridge Protocol Data Unit （BPDU）？（）
A
Uplink Fast
B
Port Fast
C
BPDU Guard
D
Root Guard
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考题
Which of the following components must be elected before the Spanning Tree Protocol can converge in a switched LAN?A. Designated ports.B. Duplex operating mode.C. Fast mode ports.D. Root bridge.E. Root ports.F. BDPU priority.
考题
Which three of the following network features are methods used to achieve high availability()
A.Spanning Tree Protocol（STP）B.Delay reductionC.Hot Standby Routing Protocol（HSRP）D.Dynamic routing protocolsE.Quality of Service（QoS）F.Jitter management
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 command enables RSTP on a switch?()
A. spanning-tree mode rapid-pvstB. spanning-tree uplinkfastC. spanning-tree backbonefastD. spanning-tree mode mst
考题
Which command enables RSTP on aswitch?()
A.spanning-tree mode rapid-pvstB.spanning-tree uplinkfastC.spanning-tree backbonefastD.spanning-tree mode mst
考题
Which of the following are spanning tree port states?（）A、LearningB、SpanningC、ListeningD、ForwardingE、InitializingF、FilteringG、Permitting
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
Examine the following options，which Spanning Tree Protocol （STP） protection mechanism disables aswitch port if the port receives a Bridge Protocol Data Unit （BPDU）？（）A、Uplink FastB、Port FastC、BPDU GuardD、Root Guard
考题
Which three of the following network features are methods used to achieve high availability（）A、Spanning Tree Protocol（STP）B、Delay reductionC、Hot Standby Routing Protocol（HSRP）D、Dynamic routing protocolsE、Quality of Service（QoS）F、Jitter management
考题
Spanning Tree Protocol calculates path cost based on which of these？ （）A、 interface bandwidthB、 interface delayC、 interface bandwidth and delayD、 hop countE、 bridge priority
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
Which of the following components must be elected before the Spanning Tree Protocol can converge in a switched LAN?（）A、designated ports.B、duplex operating mode.C、fast mode ports.D、root bridge.E、root ports.F、BDPU priority.
考题
Which command enables RSTP on a switch?（）A、spanning-tree mode rapid-pvstB、spanning-tree uplinkfastC、spanning-tree backbonefastD、spanning-tree mode mst
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 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
Which of the following features should an administrator configure to allow an IDS to watch thetraffic on a switch?（）A、ARP spoofingB、VLANC、MirroringD、Spanning tree
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
多选题Which of the following components must be elected before the Spanning Tree Protocol can converge in a switched LAN?（）Adesignated ports.Bduplex operating mode.Cfast mode ports.Droot bridge.Eroot ports.FBDPU priority.
考题
单选题Spanning Tree Protocol calculates path cost based on which of these？ （）A
interface bandwidthB
interface delayC
interface bandwidth and delayD
hop countE
bridge priority
考题
多选题Under which two circumstances should Spanning Tree Protocol be implemented？ （）Ato ensure a loop-free topologyBto protect against user-side loopsCwhen a VLAN spans access layer switchesDfor the most deterministic and highly available network topologyEbecause of the risk of lost connectivity without Spanning Tree Protocol
考题
多选题Which two values are used by Spanning Tree Protocol to elect a root bridge?（）Aamount of RAMBbridge priorityCIOS versionDIP addressEMAC addressFspeed of the links
考题
单选题Spanning Tree Protocol calculates path cost based on which of these？（）A
interface bandwidthB
interface delayC
interface bandwidth and delayD
hop countE
bridge priority
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
多选题Which of the following are spanning tree port states?（）ALearningBSpanningCListeningDForwardingEInitializingFFilteringGPermitting
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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