單項選擇題A network administrator wants to add a line to an access list that will block only Telnet access by the hosts on subnet 192.168.1.128/28 to the server at 192.168.1.5.What command should be issued to accomplish this task？（）

A.access-list 101 deny tcp192.168.1.1280.0.0.15192.168.1.50.0.0.0eq23 access-list 101 permit ip any any
B.access-list 101 deny tcp192.168.1.1280.0.0.240192.168.1.50.0.0.0eq23 access-list101permit ip any any
C.access-list 1 deny tcp192.168.1.1280.0.0.255192.168.1.50.0.0.0eq21 access-list1permit ip any any
D.access-list 1 deny tcp192.168.1.1280.0.0.15host192.168.1.5eq23 access-list1permit ip any any


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1.單項選擇題

一個網(wǎng)絡管理員配置了兩臺交換機London和Madrid，讓它們使用VTP。但是，兩臺交換機之間沒有共享VTP信息，根據(jù)下圖，回答交換機之間沒有分享VTP信息的原因是（）。

A.VTP版本配置錯誤
B.VTP工作模式配置錯誤
C.VTP域名配置錯誤
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

2.單項選擇題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.

4.多項選擇題

根據(jù)下圖，圖中兩個設備是網(wǎng)絡中僅有的CISCO設備，兩個設備間的串行鏈路的掩碼255.255.255.252,在下面的答案中，哪三個是正確的?（）


A.Manchester的串行鏈路的地址為10.1.1.1
B.Manchester的串行鏈路的地址為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

5.單項選擇題

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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