單項選擇題

Refer to the exhibit. LACP has been configured on Switch1 as shown. 
Which is the correct command set to configure LACP on Switch2?()

A.Switch2# configure terminal Switch2(config)# interface range gigabitethernet3/1 -2 Switch2(config-if)# channel-group 5 mode auto
B.Switch2# configure terminal Switch2(config)# interface range gigabitethernet3/1 -2 Switch2(config-if)# channel-group 5 mode passive
C.Switch2# configure terminal Switch2(config)# interface range gigabitethernet3/1 -2 Switch2(config-if)# channel-group 5 mode desirable
D.Switch2# configure terminal Switch2(config)# interface range gigabitethernet3/1 -2 Switch2(config-if)# channel-group 5 mode on


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1.單項選擇題

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

A.ip routing
B.no ip routing
C.router eigrp 1
D.no router eigrp 1
E.mls qos
F.no mls qos

2.單項選擇題What must be the same to make multiple switches part of the same Multiple Spanning Tree (MST)?()

A.VLAN instance mapping and revision number
B.VLAN instance mapping and member list
C.VLAN instance mapping, revision number, and member list
D.VLAN instance mapping, revision number, member list, and timers

3.單項選擇題

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?()

A.All ports will be in forwarding mode.
B.All ports in VLAN 10 will be in forwarding mode.
C.All ports in VLAN 10 will be in forwarding mode and all ports in VLAN 20 will be in blocking mode.
D.All ports in VLAN 10 will be in forwarding mode and all ports in VLAN 20 will be in standby mode.

4.多項選擇題Which two statements are true about BPDU port-guard and BPDU filtering?()

A.BPDU port-guard can be enabled globally, whereas BPDU filtering must be enabled on a per-interface basis.
B.When globally enabled, BPDU port-guard and BPDU filtering apply only to PortFast enabled ports.
C.When globally enabled, BPDU port-guard and BPDU filtering apply only to trunking-enabled ports.
D.When a BPDU is received on a BPDU port-guard enabled port, the interface goes into the err-disabled state.
E.When a BPDU is received on a BPDU filtering enabled port, the interface goes into the err-disabled state.
F.When a BPDU is received on a BPDU filtering enabled port, the interface goes into the STP blocking state.

5.單項選擇題

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?()

A.The root port on switch SW_A will automatically transition to full-duplex mode.
B.The root port on switch SW_B will fallback to full-duplex mode.
C.The interfaces between switches SW_A and SW_B will transition to a blocking state.
D.Interface Fa 0/6 on switch SW_B will transition to a forwarding state and create a bridging loop.

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Refer to the exhibit. STP has been implemented in the network. Switch SW_A is the root switch for the default VLAN. To reduce the broadcast domain, the network administrator decides to split users on the network into VLAN 2 and VLAN 10. The administrator issues the command spanning-tree vlan 2 root primary on switch SW_A. What will happen as a result of this change?()

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Refer to the exhibit. What will happen when one more user is connected to interface FastEthernet 5/1? ()

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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?()

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Which option correctly identifies the Cisco IOS switching methods in descending order from the fastest method to the slowest method?()

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Which two statements about the various implementations of STP are true?()

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What two things will occur when an edge port receives a BPDU?()

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If G1/0/1 on DS1 is shutdown, what will be the current priority value of the Vlan105’s group on DS1 ?()

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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?()

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During routine maintenance, G1/0/1 on DS1 was shutdown. All other interface were up. DS2 became the active HSRP device for Vlan101 as desired. However, after G1/0/1 on DS1 was reactivated. DS1 did not become the active HSRP device as desired. What need to be done to make the group for Vlan101 function properly ? ()

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Which three statements about STP timers are true?()

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