單項(xiàng)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(xiàng)選擇題

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

A.VTP版本配置錯(cuò)誤
B.VTP工作模式配置錯(cuò)誤
C.VTP域名配置錯(cuò)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(xiàng)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(xiàng)選擇題

根據(jù)下圖,圖中兩個(gè)設(shè)備是網(wǎng)絡(luò)中僅有的CISCO設(shè)備,兩個(gè)設(shè)備間的串行鏈路的掩碼255.255.255.252,在下面的答案中,哪三個(gè)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(xiàng)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

6.多項(xiàng)選擇題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

7.多項(xiàng)選擇題哪兩個(gè)值被生成樹協(xié)議用來選舉根橋?()

A.amount of RAM
B.bridge priority
C.IOS version
D.IP address
E.MAC address
F.speed of thelinks

8.單項(xiàng)選擇題Which of these represents an IPv6 link-local address?()

A.FE08::280e:611:a:f14f:3d69
B.FE81::280f:512b:e14f:3d69
C.FE80::380e:611a:e14f:3d69
D.FEFE:0345:5f1b::e14d:3d69

9.多項(xiàng)選擇題

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
B.source ip address:,192.168.15.37destination port:21
C.sourcei p address:,192.168.15.41destination port:21
D.source ip address:,192.168.15.36destination port:23
E.source ip address:192.168.15.46destination port:23
F.source ip address:,192.168.15.49destination port:23

10.多項(xiàng)選擇題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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