單項選擇題

You need make configuration changes to an existing layer 3 switch in the Company network. On a  multilayer Catalyst switch, 
which interface command is used to convert a Layer 3 interface to a  Layer 2 interface?()

A. switchport access vlan vlan-id
B. switchport
C. switchport mode access
D. no switchport
E. None of the other alternatives apply


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1.單項選擇題

Refer to the exhibit. The user who is connected to interface FastEthernet 0/1 is on VLAN 10 and  cannot access network resources. On the basis of the information in the exhibit,
 which command  sequence would correct the problem?()

A. SW1(config)# vlan 10SW1(config-vlan)# no shut
B. SW1(config)# interface fastethernet 0/1SW1(config-if)# switchport mode accessSW1(config-if)#  switchport access vlan 10
C. SW1(config)# interface fastethernet 0/1SW1(config-if)# switchport mode access
D. SW1(config)# vlan 10SW1(config-vlan)# state active
E. SW1(config)# interface fastethernet 0/1SW1(config-if)# no shut

2.單項選擇題

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?()

A. IEEE 802.1D and IEEE 802.1w are incompatible. All three switches must use the same  standard or no traffic will pass between any of the switches.
B. Switches S1, S2, and S3 will be able to pass traffic between themselves.
C. Switches S1, S2, and S3 will be able to pass traffic between themselves. However, if there is a  topology change, Switch S2 will not receive notification of the change.
D. Switches S1 and S3 will be able to exchange traffic but neither will be able to exchange traffic  with Switch S2

3.單項選擇題

The network administrator maps VLAN 10 through 20 to MST instance 2.
 How will this information be propagated to all appropriate switches?()

A. Information will be carried in the RSTP BPDUs.
B. It will be propagated in VTP updates.
C. Information stored in the Forwarding Information Base and the switch will reply on query.  
D. Multiple Spanning Tree must be manually configured on the appropriate switches.

4.單項選擇題

Refer to the show spanning-tree mst configuration output shown in the exhibit.
 What should be  changed in the configuration of the switch SW_2 in order for it to participate in the same MST  region? ()

A. Switch SW_2 must be configured with an instance number of 2.
B. Switch SW_2 must be configured with a different VLAN range.
C. Switch SW_2 must be configured with the revision number of 1.
D. Switch SW_2 must be configured with a different MST name.

5.單項選擇題

While logged into a Company switch you issue the following command:  
CompanySwitch(config-mst)# instance 10 vlan 11-12  
What does this command accomplish?()

A. It enables a PVST+ instance of 10 for vlan 11 and vlan 12
B. It enables vlan 11 and vlan 12 to be part of the MST region 10
C. It maps vlan 11 and vlan 12 to the MST instance of 10.
D. It creates an Internal Spanning Tree (IST) instance of 10 for vlan 11 and vlan 12  
E. It create a Common Spanning Tree (CST) instance of 10 for vlan 11 and vlan 12
F. It starts two instances of MST, one instance for vlan 11 and another instance for vlan 12.

6.單項選擇題

Which MST configuration statement is correct?  ()

A. MST configurations can be propagated to other switches using VTP.
B. After MST is configured on a Switch, PVST+ operations will also be enabled by default.
C. MST configurations must be manually configured on each switch within the MST region.
D. MST configurations only need to be manually configured on the Root Bridge.
E. MST configurations are entered using the VLAN Database mode on Cisco Catalyst switches.

7.單項選擇題By default, all VLANs will belong to which MST instance when using Multiple STP? ()

A. MST00
B. MST01
C. the last MST instance configured
D. none

8.多項選擇題Which three items are configured in MST configuration submode? ()

A. Region name
B. Configuration revision number
C. VLAN instance map
D. IST STP BPDU hello timer
E.  CST instance map
F. PVST+ instance map


10.單項選擇題

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

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