Which term describes a spanning－tree network that has all switch ports in either the blocking or forwarding state?() A. redundantB. spannedC. provisionedD. converged
Which term describes a spanning－tree network that has all switch ports in either the blocking or forwarding state?()
A. redundant
B. spanned
C. provisioned
D. converged
相关考题：
When is a switched network that is running the Spanning Tree Protocol considered to be fully converged?A．when all switches have the same BID as the root switchB．when all switches have received the MAC address of each neighboring switchC．when every enabled switch port has been assigned a unique identifierD．when every operating switch port is in either the blocking or forwarding stateE．when all switches are in either client, server, or transparent mode
Which term describes a group of packets sharing common forwarding characteristics?() A. common forwarding classB. forwarding equivalence classC. equivalent class characteristicsD. forwarding class characteristics
You are about to migrate a customer network to use a VSS. Which of these statements is true about a VSS？ （）A、 The VSS switch must be the root bridge for all VLANs and is automatically designatedB、 The VSS switch is defined in RFC 4318 as a managed objectC、 The PAgP+ or LACP protocols are used to maintain the operational state of the VSS devicesD、 A VSS interoperates with a virtual port channelE、 The 802.1Q or ISL protocols are used to maintain the operational state of the VSS devicesF、 A VSS increases the size of the spanning-tree domain
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
Which term describes a spanning-tree network that has all switch ports in either the blocking or forwardingstate？ （）A、redundantB、spannedC、provisionedD、converged
Which statement describes a spanning-tree network that has converged?（）A、All switch and bridge ports are in the forwarding state.B、All switch and bridge ports are assigned as either root or designated ports.C、All switch and bridge ports are in either the forwarding or blocking state.D、All switch and bridge ports are either blocking or looping.
A switch that is to be added to the production network has been preconfigured （trunks， VLANs， VTP， and STP） and was tested in your lab. After installing the switch into the network， the entire network went down. What might explain what happened？ （）A、The new switch happened to be running Cisco Catalyst operating system， while the other network switches were running Cisco IOS Software.B、The configuration revision of the new switch was higher than the configuration revision of the production VTP domain.C、The link costs on the new switch are set to a high value， causing all ports on the new switch to go into a forwarding mode and none into blocking mode， thereby causing a spanning-tree loop.D、The ports connecting to the two switches have been configured incorrectly. One side has the command switchport mode access and the other switchport mode trunk.
Which of the following will generate an RSTP topology change notification？（）A、 an edge port that transitions to the forwarding stateB、 a non-edge port that transitions to the blocking stateC、 a non-edge port that transitions to the forwarding stateD、 an edge port that transitions to the blocking stateE、 any port that transitions to the blocking stateF、 any port that transitions to the forwarding state
Refer to the exhibit. The output that is shown is generated at a switch. Which three of these statements are true? （）A、All ports will be in a state of discarding, learning, or forwarding.B、Thirty VLANs have been configured on this switch.C、The bridge priority is lower than the default value for spanning tree.D、All interfaces that are shown are on shared media.E、All designated ports are in a forwarding state.F、The switch must be the root bridge for all VLANs on this switch.
What are the switch and bridge port characteristics of a layer two spanning-tree network that is fully converged?（）A、All switch and bridge ports are in the forwarding state.B、All switch and bridge ports are in the stand-by state.C、All switch and bridge ports are assigned as either root or designated ports.D、All switch and bridge ports are in either the forwarding or blocking state.E、All switch and bridge are either blocking or looping.
Which statement correctly describes the Cisco implementation of RSTP？ （）A、PortFast， UplinkFast， and BackboneFast specific configurations are ignored in Rapid PVST mode.B、RSTP is enabled globally and uses existing STP configuration.C、Root and alternative ports transition immediately to the forwarding state.D、Convergence is improved by using sub-second timers for the blocking， listening， learning， and forwarding port states.
Which of the following characteristics describe the Root Guard feature？（Choose all that apply.）（）A、The port must be put into forwarding state manually after root-inconsistent state has beencorrectedB、A Root Guard port receiving superior BPDU goes into a root-inconsistent stateC、A Root Guard port receiving inferior BPDU goes into a root-inconsistent stateD、While the port is in a root-inconsistent state no user data is sent across that portE、The port returns to a forwarding state if inferior BPDUs stopF、It should be applied to all switch ports
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 accurately describe layer 2 Ethernet switches?（）A、Microsegmentation decreases the number of collisions on the network.B、if a switch receives a frame for an unkown destination,it uses ARP to resolve the address.C、Spanning Tree Protocol allows switches to automatically share vlan information.D、In a properly functioning network with redundant switched paths,each switched aegment will contain one root bridge with all its ports in the forwarding state.All other switches in that broadcast domain will have only one root port.E、Establishing vlans increases the number of broadcast domains.F、Switches that are configured with vlans make forwarding decisions based on both layer 2 and layer 3 address information.
Which term describes a spanning-tree network that has all switch ports in either the blocking or forwarding state?（）A、redundantB、spannedC、provisionedD、converged
Which three statements are possible causes for the "fltAdaptorHostIfLink-down" fault in UCS Manager？ （）A、 The fabric interconnect is in the end-host mode， and all uplink ports have failed.B、 The server port to which the adapter is pinned has failed.C、 A transient error has caused the link to fail.D、 The fabric interconnect is in the switch mode， and all uplink ports have failed.E、 The link for a network-facing host interface is missing.
Which term describes a group of packets sharing common forwarding characteristics?（）A、common forwarding classB、forwarding equivalence classC、equivalent class characteristicsD、forwarding class characteristics
多选题Refer to the exhibit. The output that is shown is generated at a switch. Which three of these statements are true? （）AAll ports will be in a state of discarding, learning, or forwarding.BThirty VLANs have been configured on this switch.CThe bridge priority is lower than the default value for spanning tree.DAll interfaces that are shown are on shared media.EAll designated ports are in a forwarding state.FThe switch must be the root bridge for all VLANs on this switch.
多选题Which three statements are possible causes for the "fltAdaptorHostIfLink-down" fault in UCS Manager？ （）AThe fabric interconnect is in the end-host mode， and all uplink ports have failed.BThe server port to which the adapter is pinned has failed.CA transient error has caused the link to fail.DThe fabric interconnect is in the switch mode， and all uplink ports have failed.EThe link for a network-facing host interface is missing.
单选题A switch that is to be added to the production network has been preconfigured （trunks， VLANs， VTP， and STP） and was tested in your lab. After installing the switch into the network， the entire network went down. What might explain what happened？ （）AThe new switch happened to be running Cisco Catalyst operating system， while the other network switches were running Cisco IOS Software.BThe configuration revision of the new switch was higher than the configuration revision of the production VTP domain.CThe link costs on the new switch are set to a high value， causing all ports on the new switch to go into a forwarding mode and none into blocking mode， thereby causing a spanning-tree loop.DThe ports connecting to the two switches have been configured incorrectly. One side has the command switchport mode access and the other switchport mode trunk.
单选题When is a switched network that is running the Spanning Tree Protocol considered to be fully converged?（）Awhen all switches have the same BID as the root switchBwhen all switches have received the MAC address of each neighboring switchCwhen every enabled switch port has been assigned a unique identifierDwhen every operating switch port is in either the blocking or forwarding stateEwhen all switches are in either client, server, or transparent mode
单选题Which statement describes a spanning-tree network that has converged?（）AAll switch and bridge ports are in the forwarding state.BAll switch and bridge ports are assigned as either root or designated ports.CAll switch and bridge ports are in either the forwarding or blocking state.DAll switch and bridge ports are either blocking or looping.
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
多选题Which two statements best describe spanning-tree BPDU processing for a blocking port？（）ABPDUs that enter a blocking port are discarded.BBPDUs that enter a blocking port are processed.CLoopguard puts an interface into a loop-inconsistent state when BPDUs stop being received on a blocking port.DBPDUs are only processed on forwarding ports.
单选题What are the switch and bridge port characteristics of a layer two spanning-tree network that is fully converged?（）AAll switch and bridge ports are in the forwarding state.BAll switch and bridge ports are in the stand-by state.CAll switch and bridge ports are assigned as either root or designated ports.DAll switch and bridge ports are in either the forwarding or blocking state.EAll switch and bridge are either blocking or looping.
单选题Routing convergence time is which of the following？（）ATime required for a VPN connection to occurBTime required by protocols to update their forwarding tables after changes have occurredCTime required for an IDS to detect suspicious softwareDTime required by switch ports to update their link status and transition to the forwarding state
多选题Which of the following characteristics describe the Root Guard feature？（Choose all that apply.）（）AThe port must be put into forwarding state manually after root-inconsistent state has beencorrectedBA Root Guard port receiving superior BPDU goes into a root-inconsistent stateCA Root Guard port receiving inferior BPDU goes into a root-inconsistent stateDWhile the port is in a root-inconsistent state no user data is sent across that portEThe port returns to a forwarding state if inferior BPDUs stopFIt should be applied to all switch ports