Which of the following specification will allow you to： associate VLAN groups to STP instances so you can provide multiple forwarding paths for data traffic and enable load balancing？ （）
A. IEEE 802.1d （STP）
B. IEEE 802.1s （MST）
C. IEEE 802.1Q （CST）
D. IEEE 802.1w （RSTP）
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Which of the following specifications is a companion to the IEEE 802.1w Rapid Spanning Tree Protocol （RSTP） algorithm， and warrants the use multiple spanning-trees？ （）
A. IEEE 802.1s （MST）
B. IEEE 802.1Q （CST）
C. Cisco PVST+
D. IEEE 802.1d （STP）
E. None of the other alternatives apply
pany uses MSTP within their switched LAN.
What is the main purpose of Multiple Instance Spanning Tree Protocol （MSTP）？（）
A. To enhance Spanning Tree troubleshooting on multilayer switches
B. To reduce the total number of spanning tree instances necessary for a particular topology
C. To provide faster convergence when topology changes occur in a switched network
D. To provide protection for STP when a link is unidirectional and BPDUs are being sent but not received
E. None of the other alternatives apply
The Company network utilizes the Multiple-instance Spanning Tree protocol in its switched LAN.
Which three statements about the MST protocol （IEEE 802.1S） are true？ （）
A. To verify the MST configuration， the show pending command can be used in MST configuration mode.
B. When RSTP and MSTP are configured； UplinkFast and BackboneFast must also be enabled.
C. All switches in the same MST region must have the same VLAN-to-instance mapping， but different configuration revision numbers.
D. All switches in an MST region， except distribution layer switches， should have their priority lowered from the default value 32768.
E. An MST region is a group of MST switches that appear as a single virtual bridge to adjacent CST and MST regions.
F. Enabling MST with the "spanning-tree modemst" global configuration command also enables RSTP.
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 ports
D. Globally enables all ports on the device for Unidirectional Link Detection （UDLS）
E. None of the other alternatives apply
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 state
B. 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.
最新試題
Refer to the exhibit. What command was issued on the Layer 3 switch Sw1 between Exhibit #1 and Exhibit #2？（）
Refer to the exhibit. Which statement is true about the output？（）
Examine the diagram. A network administrator has recently installed the above switched network using 3550s and would like to control the selection of the root bridge.Which switch should theadministrator configure as the root bridge and which configuration command must theadministrator enter to accomplish this？（）
Refer to the exhibit. On the basis of the output of the show spanning-tree inconsistentports command， which statement about interfaces FastEthernet 0/1 and FastEthernet 0/2 is true？（）
Refer to the exhibit. Based on the output of the show spanning-tree command， which statement is true？ （）
What will occur when a nonedge switch port that is configured for Rapid Spanning Tree does not receive a BPDU from its neighbor for three consecutive hello time intervals？（）
Based on the show spanning-tree vlan 200 output shown in the exhibit， which two statements about the STP process for VLAN 200 are true？ （）
DS2 has not become the active device for Vlan103’s HSRP group even though all interfaces are active. As related to Vlan103’s HSRP group. What can be done to make the group function properly ？ （）
Refer to the exhibit. For what purpose is the command show ip cef used？（）
Which two statements are true when the extended system ID feature is enabled？ （）