單項選擇題At which layer of the OSI model dose PPP perform?()

A.Layer 3
B.Layer 4
C.Layer 2
D.Layer 5


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2.多項選擇題Which three statements about VTP features are true?()

A.When properly configured,VTP minimizes VLAN misconfigurations and configuration inconsistencies
B.Each broadcast domain on a switch can have its own unique VTP domain
C.VTP works at Layer 3 of the OSI model and requires that a management VLAN IP address be configured.
D.When properly configured,VTP maintains VLAN configuration consistency and accelerates trunk link negotiation.
E.VTP pruning is used to increase available bandwidth in trunk links
F.Client,server,and transparent are valid VTP modes
G. To configure a switch to be part of two VTP domains,each domain must have its own passwords

3.多項選擇題

如圖,每個交換機都配置了主機名,也都運行了RSTP,在就沒有做其他的配置了。下面哪三個選項正確的描述了RSTP的端口角色?()

A.SwitchA上,F(xiàn)a0/2,指定
B.SwitchA上,F(xiàn)a0/1,根
C.SwitchB上,GI0/2,根
D.SwitchB上,GI0/1,指定
E.SwitchC上,F(xiàn)a0/2,根
F.SwitchD上,GI0/2,根

4.單項選擇題On which options are standard access lists based?()

A.destination address and wildcard mask
B.source address and wildcard mask
C.destination address and subnet mask
D.source address and subnet mask

5.多項選擇題Two switches are connected through a trunk link.which two commands show that there is a native VLAN mismatch on that link?()

A.show interfaces interface
B.show vlan bri
C.show interfaces interface switchport
D.show interface interface trunk
E.show interfaces vlan

6.單項選擇題

What is the most likely reason for the dispartly between the actual network numbers at the branches and the routes in the routing table on Gateway-Router?()

A.Branch-Router2 is configured to send both RIPv1 and RIPv2 updates.
B.Gateway-Router is configured to only receive RIPv2 updates.
C.Gateway-router is configured to receive only RIPv1 updates.
D.Branch-Router1 is configured to only send RIPv1 updates.

7.單項選擇題Which command is used to display the collection of OSPF link states?()

A.show ip ospf lsa database
B.show ip ospf link-state
C.show ip ospf neighbors
D.show ip ospf database

8.單項選擇題When you are troubleshooting an ACL issue on a router,which command can help you to verify which interfaces are affected by the ACL?()

A.show ip access-list
B.show access-list
C.list ip interface
D.show interface
E.show ip interface

9.多項選擇題

如圖,如果所有的鏈接都運行在相同的帶寬,哪些端口會被STP指定的端口?()

A. Switch A - Fa0/0
B. Switch A - Fa0/1
C. Switch B - Fa0/0
D. Switch B - Fa0/1
E. Switch C - Fa0/0
F. Switch C - Fa0/1

10.單項選擇題Three switches are connected to one anther via trunk ports.Assuming the default switch configuration,which switch is elected as the root bridge for the spanning-tree instance of vlan 1?()

A.the switch with the lowest MAC address
B.the switch with the higest MAC address
C.the switch witch the higest IP address
D.the switch with the lowest IP address

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