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.
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.
相关考题：
You have configured a Ezonexam switch as shown below:Ezonexam3(config-if) switchport port-securityEzonexam3(config-if) switchport port-security mac-address stickySelect the action below that results from executing these commands.A. A dynamically learned MAC address is saved in the VLAN database.B. A dynamically learned MAC address is saved in the startup-configuration file.C. Statically configured MAC addresses are saved in the startup-configuration file if frames from that address are received.D. A dynamically learned MAC address is saved in the running-configuration file.E. Statically configured MAC addresses are saved in the running-configuration file if frames from that address are received.F. None of the above
What are two characteristics of a switch that is configured as a VTP client?() A.if a switch that is configured to operate in client mode cannot access a VTP server,then the switch reverts to transparent mode.B.The local vlan configuration is updated only when an update that has a higher configuration revision number is received.C.Vtp advertisements are not forwarded to neighboring switches that are configured in vtp transparent mode.D.When switches in vtp client mode are rebooted,they send a vtp advertisement request to the vtp servers.E.Vtp client is the default vtp modeF.On switches that are configured to operate in client mode ,vlans can be created,deleted,or renamed locally
Refer to the diagram. Which three statements describe the router port configuration and the switch port configuration as shown in the topology? () A.The Router1 WAN port is configured as a trunking port.B.The Router1 port connected to Switch1 is configured using subinterfaces.C.The Router1 port connected to Switch1 is configured as 10 Mbps.D.The Switch1 port connected to Router1 is configured as a trunking port.E.The Switch1 port connected to Host B is configured as an access port.F.The Switch1 port connected to Hub1 is configured as full duplex.
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 spanning-tree command would cause a PortFast-enabled interface to lose its PortFast-operational status and disable BPDU filtering if it receives BPDUs？（）A、spanning-tree guard rootB、spanning-tree portfast bpduguard defaultC、spanning-tree bpduguard enableD、spanning-tree bpdufilter enableE、spanning-tree portfast bpdufilter default
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
Switch R1 has been configured with the root guard feature. What statement is true if the spanning tree enhancement Root Guard is enabled？ （）A、 If BPDUs are not received on a non-designated port， the port is moved into the STP loop- inconsistent blocked stateB、 IF BPDUs are received on a PortFast enabled port， the port is disabled.C、 If superior BPDUs are received on a designated port， the interface is placed into the root- inconsistent blocked state.D、 If inferior BPDUs are received on a root port， all blocked ports become alternate paths to the root bride.
A port in a redundant topology is currently in the blocking state and is not receiving BPDUs. To ensure that this port does not erroneously transition to the forwarding state， which command should be configured to satisfy the requirement？（）A、Switch（config）#spanning-tree loopguard defaultB、Switch（config-if）#spanning-tree bdpufilterC、Switch（config）#udld aggressiveD、Switch（config-if）#spanning-tree bpduguard
Switch R1 has been configured with Private VLANs. With that type of PVLAN port should the default gateway be configured？（）A、 TrunkB、 IsolatedC、 PrimaryD、 CommunityE、 PromiscuousF、 None of the other alternatives apply
Select the action that results from executing these commands. Switch（config-if）# switchport port-security. Switch（config-if）# switchport port-security mac-address sticky（）A、A dynamically learned MAC address is saved in the startup-configuration file.B、A dynamically learned MAC address is saved in the running-configuration file.C、A dynamically learned MAC address is saved in the VLAN database.D、Statically configured MAC addresses are saved in the startup-configuration file if frames from that address are received.E、Statically configured MAC addresses are saved in the running-configuration file if frames from that address are received.
The network administrator has enabled BPDU guard on the LAN. Why is an effective way to prevent an unauthorized rogue switch from altering the spanning-tree topology of this network？ （）A、BPDU guard can be used to prevent invalid BPDUs from propagating throughout the network. B、BPDU guard can guarantee proper selection of the root bridge.C、BPDU guard can be utilized to prevent the switch from transmitteing BPDUs and incorrectly altering the root bridge election.D、BPDU guard can be utilized along with PortFast to shut down ports when a switch is connected to the port.E、None of the other alternatives apply
You work as a network Technician. A new workstation has consistently been unable to obtain anIP address from the DHCP server when the workstation boots. Older workstations function normally， and the new workstation obtains an address when manually forced to renew its address. What should be configured on the switch to allow the workstation to obtain an IP address at boot？（）A、UplinkFast on the switch port connected to the serverB、BackboneFast on the switch port connected to the serverC、PortFast on the switch port connected to the workstationD、trunking on the switch
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
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.
What are two characteristics of a switch that is configured as a VTP client？（）A、if a switch that is configured to operate in client mode cannot access a VTP server，then the switch reverts to transparent mode.B、The local vlan configuration is updated only when an update that has a higher configuration revision number is received.C、Vtp advertisements are not forwarded to neighboring switches that are configured in vtp transparent mode.D、When switches in vtp client mode are rebooted，they send a vtp advertisement request to the vtp servers.E、Vtp client is the default vtp modeF、On switches that are configured to operate in client mode ，vlans can be created，deleted，or renamed locally
An administrator would like to configure a switch over a virtual terminal connection from locations outside of the local LAN. Which of the following are required in order for the switch to be configured from a remote location？ （）A、The switch must be configured with an IP address,subnet mask,and default gateway.B、The switch must be connected to a router over a VLAN trunk.C、The switch must be reachable through a port connected to its management VLAN.D、The switch console port must be connected to the Ethernet LAN.E、The switch management VLAN must be created and have a membership of at least one switch port.F、The switch must be fully configured as an SNMP agent.
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Switch R1 has been configured with Private VLANs. With that type of PVLAN port should the default gateway be configured？（）A TrunkB IsolatedC PrimaryD CommunityE PromiscuousF None of the other alternatives apply
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
多选题What are two characteristics of a switch that is configured as a VTP client？（）Aif a switch that is configured to operate in client mode cannot access a VTP server，then the switch reverts to transparent mode.BThe local vlan configuration is updated only when an update that has a higher configuration revision number is received.CVtp advertisements are not forwarded to neighboring switches that are configured in vtp transparent mode.DWhen switches in vtp client mode are rebooted，they send a vtp advertisement request to the vtp servers.EVtp client is the default vtp modeFOn switches that are configured to operate in client mode ，vlans can be created，deleted，or renamed locally
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Select the action that results from executing these commands. Switch（config-if）# switchport port-security. Switch（config-if）# switchport port-security mac-address sticky（）AA dynamically learned MAC address is saved in the startup-configuration file.BA dynamically learned MAC address is saved in the running-configuration file.CA dynamically learned MAC address is saved in the VLAN database.DStatically configured MAC addresses are saved in the startup-configuration file if frames from that address are received.EStatically configured MAC addresses are saved in the running-configuration file if frames from that address are received.
单选题The following was configured on a switch： Switch（config） # spanning-tree portfast bpdufilter default What is the effect of this configuration command？（）AIf BPDUs are received by a port configured for PortFast， they are ignored and none are sent.BThe command will enable BPDU filtering on all ports regardless of whether they are configured for BPDU filtering at the interface level.CIf BPDUs are received by a port configured for Portfast， the port will transition to forwarding state.DIf BPDUs are received by a port configured for PortFast， then PortFast is disabled and the BPDUs are processed normally.ENone of the other alternatives apply.
多选题An administrator would like to configure a switch over a virtual terminal connection from locations outside of the local LAN. Which of the following are required in order for the switch to be configured from a remote location？ （）AThe switch must be configured with an IP address,subnet mask,and default gateway.BThe switch must be connected to a router over a VLAN trunk.CThe switch must be reachable through a port connected to its management VLAN.DThe switch console port must be connected to the Ethernet LAN.EThe switch management VLAN must be created and have a membership of at least one switch port.FThe switch must be fully configured as an SNMP agent.
单选题Switch R1 has been configured with the root guard feature. What statement is true if the spanning tree enhancement Root Guard is enabled？ （）A If BPDUs are not received on a non-designated port， the port is moved into the STP loop- inconsistent blocked stateB IF BPDUs are received on a PortFast enabled port， the port is disabled.C If superior BPDUs are received on a designated port， the interface is placed into the root- inconsistent blocked state.D If inferior BPDUs are received on a root port， all blocked ports become alternate paths to the root bride.
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.
单选题A port in a redundant topology is currently in the blocking state and is not receiving BPDUs. To ensure that this port does not erroneously transition to the forwarding state， which command should be configured to satisfy the requirement？（）ASwitch（config）#spanning-tree loopguard defaultBSwitch（config-if）#spanning-tree bdpufilterCSwitch（config）#udld aggressiveDSwitch（config-if）#spanning-tree bpduguard