Which Cisco Catalyst feature automatically disables the port in an operational PortFast upon receipt of a BPDU?() A.BackboneFastB.UplinkFastC.Root GuardD.BPDU GuardE.BPDU Filter
Which Cisco Catalyst feature automatically disables the port in an operational PortFast upon receipt of a BPDU?()
A.BackboneFast
B.UplinkFast
C.Root Guard
D.BPDU Guard
E.BPDU Filter
相关考题：
Which of the following characteristics describe the BPDU Guard feature（）A、ABPDU Guard port should only be configured on ports with PortFast enabled.B、BPDU Guard and PortFast should not be enabled on the same port.C、BPDU Guard is used to ensure that superior BPDUs are not received on a switch port.D、ABPDU Guard port receiving a BPDU will go into err-disablestate.E、ABPDU Guard port receiving a BPDU will be disabled.F、BPDU Guard can be enabled on any switch port.
Which of the following characteristics describe the BPDU Guard feature？（Choose all that apply.）（）A、A BPDU Guard port should only be configured on ports with PortFast enabledB、BPDU Guard and PortFast should not be enabled on the same port.C、BPDU Guard is used to ensure that superior BPDUs are not received on a switch portD、A BPDU Guard port receiving a BPDU will go into err-disable stateE、A BPDU Guard port receiving a BPDU will be disabledF、BPDU Guard can be enabled on any switch port
What are three results of issuing the switchport host command？ （）A、enables PortFastB、disables trunkingC、disables Cisco Discovery ProtocolD、enables port securityE、enables loopguardF、disables EtherChannel
A customer is considering purchasing either a Cisco Catalyst 2960 or Cisco Catalyst Express 500. Which feature can only be found on the Catalyst 2960？（） A、 48 Ethernet 10/100 portsB、 Fast Ethernet and Gigabit Ethernet connectivityC、 dual-purpose copper or fiber uplinksD、 standalone fixed-configuration Layer 2 switching
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
While troubleshooting a connectivity problem, a network administrator notices that a port status LED on a Cisco Catalyst series switch is alternating green and amber. Which condition could this indicate（）。A、The port is experiencing errorsB、The port is administratively disabledC、The port is blocked by spanning treeD、The port has an active link with normal traffic activity
The voice VLAN feature has been enabled on a new Company Catalyst switch port. What is the effect of this？ （）A、The CoS is trusted for 802.1P or 802.1Q tagged traffic.B、PortFast is disabled on the port.C、Port Security is automatically enabled on a voice VLAN port.D、Untagged traffic is sent according to the default CoS priority of the port.E、None of the other alternatives apply
You need to configure a new Company Catalyst 3560 switch for a VOIP-enabled office. Which three statements are true about the voice VLAN feature on this switch？（）A、The default CoS value for incoming traffic is set up to 0.B、The CoS value is trusted for 802.1p or 802.1q tagged traffic.C、PortFast is automatically disabled when a voice VLAN is configured.D、The voice VLAN feature is disabled by default.E、The IP phone accepts the priority of all tagged and untagged traffic and sets the CoS value to 4.F、When the voice VLAN feature is enabled， all untagged traffic is sent according to the default CoS priority of the port
Which two statements correctly describe characteristics of the PortFast feature？ （）A、STP will be disabled on the port.B、PortFast can also be configured on trunk ports.C、PortFast is required to enable port-based BPDU guard.D、PortFast is used for both STP and RSTP host ports.E、PortFast is used for STP-only host ports.
Which statement correctly describes enabling BPDU guard on an access port that is also enabled for PortFast？（）A、Upon startup， the port transmits 10 BPDUs. If the port receives a BPDU， PortFast and BPDU guard are disabled on that port and it assumes normal STP operation.B、The access port ignores any received BPDU.C、If the port receives a BPDU， it is placed into the error-disable state.D、BPDU guard is only configured globally and the BPDU filter is required for port-level configuration.
Which Cisco Catalyst feature automatically disables the port in an operational PortFast upon receipt of a BPDU?（）A、BackboneFastB、UplinkFastC、Root GuardD、BPDU GuardE、BPDU Filter
Which of these commands can you use to show if an operational Catalyst switch port is set for autonegotiation of speed and duplex when running Cisco IOS software?（）A、show port networkB、 show running-configC、show controllers Ethernet-controllerD、 show interfaces
Which two statements are true about BPDU port-guard and BPDU filtering？（）A、BPDU port-guard can be enabled globally， whereas BPDU filtering must be enabled on a per-interface basis.B、When globally enabled， BPDU port-guard and BPDU filtering apply only to PortFast enabled ports.C、When globally enabled， BPDU port-guard and BPDU filtering apply only to trunking-enabled ports.D、When a BPDU is received on a BPDU port-guard enabled port， the interface goes into the err-disabled state.E、When a BPDU is received on a BPDU filtering enabled port， the interface goes into the err-disabled state.F、When a BPDU is received on a BPDU filtering enabled port， the interface goes into the STP blocking state.
The following was configured on a switch： Switch（config） # spanning-tree portfast bpdufilter default What is the effect of this configuration command？（）A、If BPDUs are received by a port configured for PortFast， they are ignored and none are sent.B、The command will enable BPDU filtering on all ports regardless of whether they are configured for BPDU filtering at the interface level.C、If BPDUs are received by a port configured for Portfast， the port will transition to forwarding state.D、If BPDUs are received by a port configured for PortFast， then PortFast is disabled and the BPDUs are processed normally.E、None of the other alternatives apply.
Which three statements are true about the voice VLAN feature on a Catalyst 2950 switch？ （Choose three.）（） A、 The CoS value is trusted for 802.1p or 802.1q tagged traffic.B、 The voice VLAN feature is disabled by default.C、 The IP phone accepts the priority of all tagged and untagged traffic and sets the CoS value to 4.D、 When the voice VLAN feature is enabled， all untagged traffic is sent according to the default CoS priority of the port.E、 PortFast is automatically disabled when a voice VLAN is configured.F、 The default CoS value for incoming traffic is set to 0.
What is the purpose of the STP PortFast BPDU guard feature？ （）A、enforce the placement of the root bridge in the networkB、ensure that a port is transitioned to a forwarding state quickly if a BPDU is receivedC、enforce the borders of an STP domainD、ensure that any BPDUs received are forwarded into the STP domain
Which Cisco Catalyst switches fit in the access area？（）A、 Cisco Catalyst 2900 Series，Catalyst 7300 Series，and Catalyst 8000 SeriesB、 Cisco Catalyst 2900 Series，Catalyst 3700 Series，and Catalyst SeriesC、 Cisco Catalyst 2700 Series，Catalyst 7300 Series，and Catalyst 8000 SeriesD、 Cisco Catalyst 2700 Series，Catalyst 3700 Series，and Catalyst4500 Series
多选题Which of the following characteristics describe the BPDU Guard feature？（Choose all that apply.）（）AA BPDU Guard port should only be configured on ports with PortFast enabledBBPDU Guard and PortFast should not be enabled on the same port.CBPDU Guard is used to ensure that superior BPDUs are not received on a switch portDA BPDU Guard port receiving a BPDU will go into err-disable stateEA BPDU Guard port receiving a BPDU will be disabledFBPDU Guard can be enabled on any switch port
单选题Which statement correctly describes enabling BPDU guard on an access port that is also enabled for PortFast？（）AUpon startup， the port transmits 10 BPDUs. If the port receives a BPDU， PortFast and BPDU guard are disabled on that port and it assumes normal STP operation.BThe access port ignores any received BPDU.CIf the port receives a BPDU， it is placed into the error-disable state.DBPDU guard is only configured globally and the BPDU filter is required for port-level configuration.
单选题A customer is considering purchasing either a Cisco Catalyst 2960 or Cisco Catalyst Express 500. Which feature can only be found on the Catalyst 2960？（）A 48 Ethernet 10/100 portsB Fast Ethernet and Gigabit Ethernet connectivityC dual-purpose copper or fiber uplinksD standalone fixed-configuration Layer 2 switching
单选题Which spanning-tree command would cause a PortFast-enabled interface to lose its PortFast-operational status and disable BPDU filtering if it receives BPDUs？（）Aspanning-tree guard rootBspanning-tree portfast bpduguard defaultCspanning-tree bpduguard enableDspanning-tree bpdufilter enableEspanning-tree portfast bpdufilter default
单选题Which of these commands can you use to show if an operational Catalyst switch port is set for autonegotiation of speed and duplex when running Cisco IOS software?（）Ashow port networkB show running-configCshow controllers Ethernet-controllerD show interfaces
单选题Which Cisco Catalyst feature automatically disables the port in an operational PortFast upon receipt of a BPDU?（）ABackboneFastBUplinkFastCRoot GuardDBPDU GuardEBPDU Filter
多选题Which two statements correctly describe characteristics of the PortFast feature？ （）ASTP will be disabled on the port.BPortFast can also be configured on trunk ports.CPortFast is required to enable port-based BPDU guard.DPortFast is used for both STP and RSTP host ports.EPortFast is used for STP-only host ports.
多选题Which of the following characteristics describe the BPDU Guard feature（）AABPDU Guard port should only be configured on ports with PortFast enabled.BBPDU Guard and PortFast should not be enabled on the same port.CBPDU Guard is used to ensure that superior BPDUs are not received on a switch port.DABPDU Guard port receiving a BPDU will go into err-disablestate.EABPDU Guard port receiving a BPDU will be disabled.FBPDU Guard can be enabled on any switch port.
多选题Which two statements are true about BPDU port-guard and BPDU filtering？（）ABPDU port-guard can be enabled globally， whereas BPDU filtering must be enabled on a per-interface basis.BWhen globally enabled， BPDU port-guard and BPDU filtering apply only to PortFast enabled ports.CWhen globally enabled， BPDU port-guard and BPDU filtering apply only to trunking-enabled ports.DWhen a BPDU is received on a BPDU port-guard enabled port， the interface goes into the err-disabled state.EWhen a BPDU is received on a BPDU filtering enabled port， the interface goes into the err-disabled state.FWhen a BPDU is received on a BPDU filtering enabled port， the interface goes into the STP blocking state.
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）？（）AUplink FastBPort FastCBPDU GuardDRoot Guard