多选题Loop guard and UniDirectional Link Detection both protect against Layer 2 STP loops. In which two ways does loop guard differ from UDLD in loop detection and prevention？ （）ALoop guard can be used with root guard simultaneously on the same port on the same VLAN while UDLD cannotBUDLD protects against STP failures caused by cabling problems that create one-way links.CLoop guard detects and protects against duplicate packets being received and transmitted on different portsDUDLD protects against unidirectional cabling problems on copper and fiber media.ELoop guard protects against STP failures caused by problems that result in the loss of BPDUs from a designated switch port.
多选题
Loop guard and UniDirectional Link Detection both protect against Layer 2 STP loops. In which two ways does loop guard differ from UDLD in loop detection and prevention？ （）
A
Loop guard can be used with root guard simultaneously on the same port on the same VLAN while UDLD cannot
B
UDLD protects against STP failures caused by cabling problems that create one-way links.
C
Loop guard detects and protects against duplicate packets being received and transmitted on different ports
D
UDLD protects against unidirectional cabling problems on copper and fiber media.
E
Loop guard protects against STP failures caused by problems that result in the loss of BPDUs from a designated switch port.
参考解析
解析：
暂无解析
相关考题：
How do you plan to distribute the securities?A.Some protect actresses, some work outside the cinemaB.Some protect actors and actresses, some guard dressing rooms and others work outside the theatreC.Some protect actors and actresses, some guide audience and others work outside the theatreD.Some guard dressing rooms, some protect super stars and others work outside the stadium.
（ ）is the first line of protect between your computer and the public Internet.A.The Internet protocolB.The firewallC.The anti-virus software D.The intrusion-detection systems
What can be used to maintain the voice quality on a link by limiting the number of calls that can be active at any given time？（）A、 Call Management Link AgentB、 Traffic policingC、 Call Admission ControlD、 QoS Link Congestion ManagementE、 Oversubscription Link Detection
Loop guard and UniDirectional Link Detection both protect against Layer 2 STP loops. In which two ways does loop guard differ from UDLD in loop detection and prevention？ （）A、 Loop guard can be used with root guard simultaneously on the same port on the same VLAN while UDLD cannotB、 UDLD protects against STP failures caused by cabling problems that create one-way links.C、 Loop guard detects and protects against duplicate packets being received and transmitted on different portsD、 UDLD protects against unidirectional cabling problems on copper and fiber media.E、 Loop guard protects against STP failures caused by problems that result in the loss of BPDUs from a designated switch port.
Loop guard and UniDirectional Link Detection both protect against Layer 2 STP loops. In which two ways does loop guard differ from UDLD in loop detection and prevention？（）A、Loop guard can be used with root guard simultaneously on the same port on the same VLAN while UDLD cannot.B、UDLD protects against STP failures caused by cabling problems that create one-way links.C、Loop guard detects and protects against duplicate packets being received and transmitted on different ports.D、UDLD protects against unidirectional cabling problems on copper and fiber media.E、Loop guard protects against STP failures caused by problems that result in the loss of BPDUs from a designated switch port.
What is the result of entering the command spanning-tree loopguard default？（）A、The command enables both loop guard and root guard.B、The command changes the status of loop guard from the default of disabled to enabled.C、The command activates loop guard on point-to-multipoint links in the switched network.D、The command will disable EtherChannel guard.
Which statement is true about loop guard？（）A、Loop guard only operates on interfaces that are considered point-to-point by the spanning tree.B、Loop guard only operates on root ports.C、Loop guard only operates on designated ports.D、Loop guard only operates on edge ports.
On switch R1 you issue the "udld enable" global command. What does this command accomplish？ （）A、 Enables all fiber-optic LAN ports for Unidirectional LINK Detection （UDLD）B、 Enables all copper media LAN ports Unidirectional Link Detection （UDLD）C、 Overrides the default UDLS setting for all portsD、 Globally enables all ports on the device for Unidirectional Link Detection （UDLS）E、 None of the other alternatives apply
Which two statements correctly describe UDLD？ （）A、Unidirectional link detection is achieved through monitoring STP BPDUs.B、It is recommended that it be enabled globally rather than on an individual port.C、When an error is detected， normal mode will disable a port.D、It is recommended that it be enabled in normal mode.E、It is recommended that it be used with the loop guard feature.
As an experienced network engineer, you are asked to troubleshoot a CIS network outage. During the troubleshooting process, you notice that one of your colleagues connects additional devices to the network with the use of his own switch. With the purpose of improving speed, the switch is attached to both network ports in an office, which leads to bridge loop. Enabling which of the following feature will be able to prevent this problem from happening again?（）A、GLBPB、RSTPC、BPDU guardD、root guard
What two features in Cisco switches help prevent Layer 2 loops？（）A、UniDirectional Link DetectionB、Hot Standby Router ProtocolC、Virtual Router Redundancy ProtocolD、PortFastE、root guardF、loop guard
What does UDLD stand for？（）A、UniDirectional Loop DetectionB、Unspecified Distribution Label DetectionC、Unified Distribution Label DirectionD、UniDirectional Link Detection
In the context of GMPLS，LMP stands for（）.A、Loop Management ProtocolB、Label Management ProtocolC、Load Management ProtocolD、Link Management ProtocolE、None of above
Which mechanism can you use to achieve sub-second failover for link failure detection when a switched Ethernet media is used and loss of signal is not supported by the link provider？（）A、OSPF standard hellosB、Cisco Discovery Protocol link detectionC、Bidirectional Forwarding DetectionD、Fast Link PulseE、autonegotiation
多选题Loop guard and UniDirectional Link Detection both protect against Layer 2 STP loops. In which two ways does loop guard differ from UDLD in loop detection and prevention？（）ALoop guard can be used with root guard simultaneously on the same port on the same VLAN while UDLD cannot.BUDLD protects against STP failures caused by cabling problems that create one-way links.CLoop guard detects and protects against duplicate packets being received and transmitted on different ports.DUDLD protects against unidirectional cabling problems on copper and fiber media.ELoop guard protects against STP failures caused by problems that result in the loss of BPDUs from a designated switch port.
单选题On switch R1 you issue the "udld enable" global command. What does this command accomplish？ （）A Enables all fiber-optic LAN ports for Unidirectional LINK Detection （UDLD）B Enables all copper media LAN ports Unidirectional Link Detection （UDLD）C Overrides the default UDLS setting for all portsD Globally enables all ports on the device for Unidirectional Link Detection （UDLS）E None of the other alternatives apply
单选题What is the result of entering the command spanning-tree loopguard default？（）AThe command enables both loop guard and root guard.BThe command changes the status of loop guard from the default of disabled to enabled.CThe command activates loop guard on point-to-multipoint links in the switched network.DThe command will disable EtherChannel guard.
单选题Which statement is true about loop guard？（）ALoop guard only operates on interfaces that are considered point-to-point by the spanning tree.BLoop guard only operates on root ports.CLoop guard only operates on designated ports.DLoop guard only operates on edge ports.
单选题If a port configured with STP loop guard stops receiving BPDUs，the port will be put into which state？（）Alearning stateBlistening stateCforwarding stateDroot-inconsistent state
多选题Which two statements correctly describe UDLD？ （）AUnidirectional link detection is achieved through monitoring STP BPDUs.BIt is recommended that it be enabled globally rather than on an individual port.CWhen an error is detected， normal mode will disable a port.DIt is recommended that it be enabled in normal mode.EIt is recommended that it be used with the loop guard feature.
单选题What does UDLD stand for？（）AUniDirectional Loop DetectionBUnspecified Distribution Label DetectionCUnified Distribution Label DirectionDUniDirectional Link Detection
单选题Which of the following commands can be issued without interfering with the operation of loop guard？（）ASwitch（config-if）#spanning-tree guard rootBSwitch（config-if）#spanning-tree portfastCSwitch（config-if）#switchport mode trunkDSwitch（config-if）#switchport mode access
单选题Which mechanism can you use to achieve sub-second failover for link failure detection when a switched Ethernet media is used and loss of signal is not supported by the link provider？（）AOSPF standard hellosBCisco Discovery Protocol link detectionCBidirectional Forwarding DetectionDFast Link PulseEautonegotiation
单选题A towing vessel’s fire detection system may be certified to comply with the Coast Guard’s towing vessel fire protection regulations by（）.Aa Coast Guard inspectorBa registered professional engineerCthe owner or Master of the vesselDa licensed electrician
单选题What can be used to maintain the voice quality on a link by limiting the number of calls that can be active at any given time？（）A Call Management Link AgentB Traffic policingC Call Admission ControlD QoS Link Congestion ManagementE Oversubscription Link Detection