單項(xiàng)選擇題Which process plays a major role in the creation of the CEF adjacency table? ()

A.Address Resolution Protocol (ARP)
B.PDU header rewrite
C.NetFlow switching
D.hello packet exchange


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1.單項(xiàng)選擇題Which of the following commands can be issued without interfering with the operation of loop guard?()

A.Switch(config-if)#spanning-tree guard root
B.Switch(config-if)#spanning-tree portfast
C.Switch(config-if)#switchport mode trunk
D.Switch(config-if)#switchport mode access

2.單項(xiàng)選擇題

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 default
B.Switch(config-if)#spanning-tree bdpufilter
C.Switch(config)#udld aggressive
D.Switch(config-if)#spanning-tree bpduguard

3.單項(xiàng)選擇題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 root
B.spanning-tree portfast bpduguard default
C.spanning-tree bpduguard enable
D.spanning-tree bpdufilter enable
E.spanning-tree portfast bpdufilter default

4.單項(xiàng)選擇題Which of the following conditions guarantees that a broadcast storm cannot occur?()

A.a native VLAN mismatch on either side of an 802.1Q link
B.BPDU filter configured on a link to another switch
C.Spanning Tree Protocol enabled on both Layer 2 and multilayer switches
D.PortFast enabled on all access and trunk ports

5.單項(xiàng)選擇題Which statement is true regarding the Port Aggregation Protocol? ()

A.Configuration changes made on the port-channel interface apply to all physical ports assigned to the portchannel interface.
B.Configuration changes made on a physical port that is a member of a port-channel interface apply to the port-channel interface.
C.Configuration changes are not permitted with Port Aggregation Protocol; instead, the standardized Link Aggregation Control Protocol should be used if configuration changes are required.
D.The physical port must first be disassociated from the port-channel interface before any configuration changes can be made.

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Refer to the exhibit. Switch 15 is configured as the root switch for VLAN 10 but not for VLAN 20. If the STP configuration is correct, what will be true about Switch 15?()

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Refer to the exhibit. Switch S2 contains the default configuration. Switches S1 and S3 both have had the command spanning-tree mode rapid-pvst issued on them. What will be the result?()

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Refer to the exhibit. Based on the output of the show spanning-tree command, which statement is true? ()

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Refer to the exhibit. What command was issued on the Layer 3 switch Sw1 between Exhibit #1 and Exhibit #2?()

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Refer to the exhibit and the partial configuration of switch SW_A and SW_B. STP is configured on all switches in the network. SW_B receives this error message on the console port:00:06:34: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet0/5 (not half  duplex), with SW_A FastEthernet0/4 (half duplex) , with TBA05071417(Cat6K-B) 0/4 (half duplex). What would be the possible outcome of the problem?()

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