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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.

参考答案

更多 “ 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
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考题 Which spanning-tree command would cause a PortFast-enabled interface to lose its PortFast-operational status and disable BPDU filtering if it receives BPDUs?()A、spanning-tree guard rootB、spanning-tree portfast bpduguard defaultC、spanning-tree bpduguard enableD、spanning-tree bpdufilter enableE、spanning-tree portfast bpdufilter default

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考题 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?()A spanning-tree guard rootB spanning-tree portfast bpduguard defaultC spanning-tree bpduguard enableD spanning-tree bpdufilter enableE spanning-tree portfast bpdufilter default

考题 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

考题 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

考题 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

考题 单选题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.

考题 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()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.

考题 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?()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.

考题 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.

考题 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.

考题 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.

考题 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?()A Switch(config)#spanning-tree loopguard defaultB Switch(config-if)#spanning-tree bdpufilterC Switch(config)#udld aggressiveD Switch(config-if)#spanning-tree bpduguard