單項(xiàng)選擇題A network administrator is planning a network installation for a large organization.The design requires 100 separate subnetworks,so the company has acquired a Class B network address.What subnet mask will provide the 100 subnetworks required, if 500 usable host addresses are required per subnet?()

A.255.255.240.0
B.255.255.248.0
C.255.255.252.0
D.255.255.254.0
E.255.255.255.0
F.255.255.255.192


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1.單項(xiàng)選擇題Which command displays the CHAP authentication process as it occurs between two routers?()

A.debug authentication
B.debug chap ppp
C.debug chap authentication
D.debug ppp authentication

3.單項(xiàng)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

5.多項(xiàng)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

6.多項(xiàng)選擇題

如圖,每個(gè)交換機(jī)都配置了主機(jī)名,也都運(yùn)行了RSTP,在就沒有做其他的配置了。下面哪三個(gè)選項(xiàng)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

7.單項(xiàng)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

8.多項(xiàng)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

9.單項(xiàng)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.

10.單項(xiàng)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

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