一个网络管理员配置了两台交换机London和Madrid，让它们使用VTP。...

单项选择题 一个网络管理员配置了两台交换机London和Madrid，让它们使用VTP。但是，两台交换机之间没有共享VTP信息，根据下图，回答交换机之间没有分享VTP信息的原因是（）。

A.VTP版本配置错误
B.VTP工作模式配置错误
C.VTP域名配置错误
D.VTP的pruning mode被禁止了
E.VTP的V2 mode被禁止了
F.VTPtraps generation被禁止了

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1.单项选择题Assuming default setting，how can you erase the VTP database of VLANs on a CISCO IOS switch running in VTP server mode？（）

A.Enable VTP pruning
B.From privileged mode，erase the startup configuration file，then reload.
C.From privileged mode，erase the vlan date file，then reload.
D.Cycle the switch power.

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2.单项选择题在进行网络连接排错的时候，一种技术员注意到工作站网卡和交换机连接工作站的接口的灯常亮.当在工作站使用PING命令的时候，出现的信息是"Request timed out"那OSI最有可能存在问题（）。

A.会话层
B.协议层
C.数据链路层
D.访问层
E.网络层
F.应用层

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3.多项选择题 根据下图，图中两个设备是网络中仅有的CISCO设备，两个设备间的串行链路的掩码255.255.255.252,在下面的答案中，哪三个是正确的?（）

A.Manchester的串行链路的地址为10.1.1.1
B.Manchester的串行链路的地址为10.1.1.2
C.London路由器是CISCO2610
D.London路由器是CISCO2611
E.路由器Manchester的Serial0/0端口收到CDP信息
F.路由器London的Serial0/0端口收到CDP信息

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4.单项选择题 An access list was written with the four statements shown in the graphic.Which single access list statement will combine all four of these statements into a single statement that will have exactly the same effect？（）

A.access-list10 permit 172.29.16.00.0.0.255
B.access-list10 permit 172.29.16.00.0.1.255
C.access-list10 permit 172.29.16.00.0.3.255
D.access-list10 permit 172.29.16.00.0.15.255
E.access-list10 permit 172.29.0.00.0.255.255

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5.多项选择题What are three features of the IPV6 protocol?（）

A.complicated header
B.plug-and-play
C.no broadcasts
D.checksums
E.optional IPsec
F.autoconfiguration

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6.多项选择题哪两个值被生成树协议用来选举根桥？（）

A.amount of RAM
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7.单项选择题Which of these represents an IPv6 link-local address?（）

A.FE08::280e:611:a:f14f:3d69
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8.多项选择题 Your boss is learning a CCNA training course，refer to the exhibit.The access list has been configured on the S0/0 interface of router RTB in the out bound direction.Which two packets，if routed to the interface，will be denied？（）

access-list 101 denytcp192.168.15.320.0.0.15any eq telnet
access-list 101 permit ip any any

A.source ip address：192.168.15.5destination port：21
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D.source ip address：，192.168.15.36destination port：23
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9.多项选择题Which two statements about static NAT translations are true?（）

A.They are always present in the NAT table.
B.They allow connection to be initiated from the outside.
C.They can be configured with access lists,to allow two or more connections to be initiated from the outside.
D.They require no inside or outside interface markings because addresses are statically defined.

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10.单项选择题Which single access list statement will combine all four of these statements into a single statement that will have exactly the same effect（）。

A.access-list 10 permit 172.29.16.0 0.0.0.255
B.access-list 10 permit 172.29.16.0 0.0.1.255
C.access-list 10 permit 172.29.16.0 0.0.3.255
D.access-list 10 permit 172.29.16.0 0.0.15.255
E.access-list 10 permit 172.29.0.0 0.0.255.255

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