ccna培训大讲堂yy频道.pdf

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1、培训大讲堂官方 YY 频道：3660鸿鹄论坛：CCNACCNACCNACCNA 题库题库考试代号：考试代号：640-802640-802640-802640-802考试时间：英文考试时间：英文 110+30=140110+30=140110+30=140110+30=140 分钟分钟通过分数：通过分数：825825825825题库版本：题库版本：V104.3V104.3V104.3V104.3鸿鹄联合百家权威培训机构共同开展公益性技术讲座，百家培训机构名师鸿鹄联合百家权威培训机构共同开展公益性技术讲座，百家培训机构名师将循环开讲，针对重要的知识点，针对工作中的技术应用，针对以后的人生规将循环开

2、讲，针对重要的知识点，针对工作中的技术应用，针对以后的人生规划，都将进行权威和详细的讲解。鸿鹄希望通过鸿鹄大讲堂的活动，为迷茫的划，都将进行权威和详细的讲解。鸿鹄希望通过鸿鹄大讲堂的活动，为迷茫的学员指点迷津，激发起学员的求知欲望，同时搭建起网络技术的交流平台，让学员指点迷津，激发起学员的求知欲望，同时搭建起网络技术的交流平台，让更多的人了解思科，了解网络，走向更多的人了解思科，了解网络，走向 IEIEIEIE。鸿鹄大讲堂鸿鹄大讲堂：http:/ YYYYYYYY 频道：频道：3660366036603660CCNACCNACCNACCNA 题库战报交流题库战报交流 QQQQQQQQ 群群：5

3、704060570406057040605704060（500500500500 人超级群）人超级群）CCNACCNACCNACCNA 题库战报交流区：题库战报交流区：http:/ G G G G 视频教程免费下载：视频教程免费下载：http:/ 补充新题补充新题 69Q（题库改版后新题目）（题库改版后新题目）Number:640-802Passing Score:825Time Limit:120 minFile Version:104.2CCNA（640-802）题库 V104.2鸿鹄论坛 CCNA题库战报500人超级QQ群：823273972011.4.6 思科题库变动后更新题库，全网首

4、发，最新信息请关注鸿鹄论坛 http:/更新记录2011.4.8 22：00 更新16道新题2011.4.9 23：00 更新14道新题2011.4.10 22：00 更新18道新题2011.4.12 12：00 更新16道新题2011.4.15 12：00 更新5道新题b b s.h h 010.c o m鸿鹄网-专业的网络技术启蒙学习网站 w w w.h h 010.c o m鸿鹄论坛-专业的网络技术启蒙学习论坛 b b s.h h 010.c o m1Exam AQUESTION 1Which two commands correctly verify whether port secu

5、rity has been configured on port FastEthernet 0/12on a switch?(choose two)A.SW1#show swithport port-security interface FastEthernet 0/12B.SW1#show swithport port-secure interface FastEthernet 0/12C.SW1#show port-secure interface FastEthernet 0/12D.SW1#show running-configAnswer:CDExplanation/Referenc

6、e:QUESTION 2Which component of VPN technology ensures that data can be read only by its intended recipient?A.data integrityB.encryptionC.key exchangeD.authenticationAnswer:DExplanation/Reference:哪个VPN组件可以确保数据只能让预定的人读取QUESTION 3Refer to the exhibit.What is the effect of the configuration that is show

7、n?A.It tells the router or switch to try establish an SSH connection first and if that fail to use telnet.B.Itconfigures a cisco network device to use the SSH protocol on incoming communications via the virtualterminal ports.C.It allows seven failed login attempts before the VTY lines are temporaril

8、y shutdown.D.It configures the virtual terminal lines with the password 030752180500.E.It configures SSH globally for all logins.Answer:BExplanation/Reference:此条命令允许5条SSH虚链路QUESTION 4Which IPV6 routing protocol uses multicast group FF02:8 to send updates?A.RIPngb b s.h h 010.c o m鸿鹄网-专业的网络技术启蒙学习网站 w

9、 w w.h h 010.c o m鸿鹄论坛-专业的网络技术启蒙学习论坛 b b s.h h 010.c o m2B.OSPFv3C.IS-IS for IPv6D.staticAnswer:CExplanation/Reference:哪一个IPV6协议用组播地址FF02：8发送更新QUESTION 5Which of the following are true regarding the debug output shown in the graphic?(choose two)A.This router was configured with the commands:RtrA(con

10、fig)#router ripRtrA(config-router)#version 2RtrA(config-router)#network 172.16.0.0RtrA(config-router)#network 10.0.0.0B.This router was configured with the commands:RtrA(config)#router ripRtrA(config-router)#network 172.16.0.0RtrA(config-router)#network 10.0.0.0C.Network 10.0.0.0 will be displayed i

11、n the routing table.D.Network 192.168.168.0 will be displayed in the routing table.E.This router was configured with the commands:RtrA(config)#router ripRtrA(config-router)#network 192.168.1.0RtrA(config-router)#network 10.0.0.0RtrA(config-router)#network 192.168.168.0F.split-horizon was disabled on

12、 this router.Answer:BCExplanation/Reference:从信息中可以看到协议为RIPv1，192.168.168.0in 16 hops，将要从路由表中清除QUESTION 6The network administrator is asked to configure 113 point-to-point links.Which IP addressing scheme bestdefines the address range and subnet mask that meet the requirement and waste the fewest sub

13、net andhost addresses?b b s.h h 010.c o m鸿鹄网-专业的网络技术启蒙学习网站 w w w.h h 010.c o m鸿鹄论坛-专业的网络技术启蒙学习论坛 b b s.h h 010.c o m3A.10.10.0.0/18 subnetted with mask 255.255.255.252B.10.10.0.0/25 subnetted with mask 255.255.255.252C.10.10.0.0/24 subnetted with mask 255.255.255.252D.10.10.0.0/23 subnetted with mas

14、k 255.255.255.252E.10.10.0.0/16 subnetted with mask 255.255.255.252Answer:DExplanation/Reference:113个point-to-point链路而不是IP。每个链路需要2个有效的IP地址，即2个主机位。113个需要7位，一共需要9位，所以掩码为23QUESTION 7VLAN 3 is not yet configured on your switch.What happens if you set the switchport access vlan 3commmand interface config

15、uration mode?A.The command is accepted and the respective VLAN is added to vlan dat.B.The command is rejected.C.The command is accepted and you must configure the VLAN manually.D.The port turns amber.Answer:AExplanation/Reference:在PT和真机环境下回自动创建vlan。切莫用路由器的IOS做此实验。QUESTION 8Which parameter can be tun

16、ed to affect the selection of a static route as a backup.when a dynamicprotocol is also being used?A.link bandwidthB.hop countC.link costD.administrative distanceE.link delayAnswer:DExplanation/Reference:选择路由先看管理距离，小的优先QUESTION 9Refer to the exhibit.In the Frame Relay network,which ip address would

17、be assigned to the interfaces withpoint-to-poin PVCs?b b s.h h 010.c o m鸿鹄网-专业的网络技术启蒙学习网站 w w w.h h 010.c o m鸿鹄论坛-专业的网络技术启蒙学习论坛 b b s.h h 010.c o m4A.DLCI 16:192.168.10.1/24DLCI 17:192.168.10.2/24DLCI 99:192.168.10.3/24DLCI 28:192.168.10.4/24B.DLCI 16:192.168.10.1/24DLCI 17:192.168.11.1/24DLCI 99:19

18、2.168.10.2/24DLCI 28:192.168.11.2/24C.DLCI 16:192.168.10.1/24DLCI 17:192.168.11.1/24DLCI 99:192.168.12.1/24DLCI 28:192.168.13.1/24D.DLCI 16:192.168.10.1/24DLCI 17:192.168.10.1/24DLCI 99:192.168.10.2/24DLCI 28:192.168.10.3/24Answer:BExplanation/Reference:虚链路为点对点，R2为子接口，每条虚链路各自一个网段QUESTION 10Why will

19、a switch never learn a broadcast address?A.Broadcast frames are never sent to swiches.B.Broadcast addresses use an incorrect format for the switching table.C.A broadcast address will never be the source address of a frame.D.Broadcasts only use network layer addressing.E.A broadcast frame is never fo

20、rwarded by a switch.Answer:CExplanation/Reference:b b s.h h 010.c o m鸿鹄网-专业的网络技术启蒙学习网站 w w w.h h 010.c o m鸿鹄论坛-专业的网络技术启蒙学习论坛 b b s.h h 010.c o m5QUESTION 11Wich command can you use to manually assign a static IPV6 address to a router interface?A.ipv6 address PREFIX_1:1/64B.ipv6 autoconfig 2001:db8:2

21、222:7272:72/64C.ipv6 autoconfigD.ipv6 address 2001:db8:2222:7272:72/64Answer:DExplanation/Reference:IPv6在路由器上设置地址的命令QUESTION 12The EIGRP configuration in the Glencoe router uses a single network statement.From the output shownin the graph would advertise these networks in EIGRP?A.network 172.26.168.

22、0 area 478B.network 172.26.0.0C.network 172.26.168.128 0.0.0.127D.network 172.26.168.128 area 478Answer:BExplanation/Reference:此处要求用一条命令宣告QUESTION 13Which IPsec security protocol should be used when confidentiality is required?A.AHB.MD5C.PSKD.ESPAnswer:DExplanation/Reference:封装安全载荷协议Encapsulating Se

23、curity Payload（ESP）QUESTION 14What is the function of the command switchport trunk native vlan 999 on a(此处文字不清楚).?b b s.h h 010.c o m鸿鹄网-专业的网络技术启蒙学习网站 w w w.h h 010.c o m鸿鹄论坛-专业的网络技术启蒙学习论坛 b b s.h h 010.c o m6A.It designates VLAN 999 for untagged traffic.B.It blocks VLAN 999 traffic from passing on

24、the trunk.C.It creates a VLAN 999 interface.D.It designates VLAN 999 as the default for all unkown tagged traffic.Answer:DExplanation/Reference:设置vlan999为本征vlan，交换机默认本征vlan为vlan1.QUESTION 15Which command can be used from a PC to verfy the connectivity between host that connect thro(字体不清)?A.tracert a

25、ddressB.ping addressC.arp addressD.traceroute addressAnswer:AExplanation/Reference:traceroute是路由器的命令是路由器的命令QUESTION 16In which solution is a router ACL used?A.protecting a server frome unauthorized accesB.controlling path selection,based on the route metricC.reducing router CPU utilizationD.filterri

26、ng packets that are passing through a router Answer:DExplanation/Reference:ACL应用在路由器，提供包过滤的功能QUESTION 17Which statement is true,as relates to classful or classless routing?A.RIPV1 and OSPF are classless routing protocols.B.Classful routing protocols send the subnet mask in routing updates.C.Automati

27、c summarization at classful boundaries can cause problems on discD.EIGRP and OSPF are classful routing protocols and summarize routes by defAnswer:CExplanation/Reference:自动汇总会将IP地址汇总为主类地址，必须手动关闭QUESTION 18A router has two FastEthernet interfaces and needs to connect to four vlans in the local networ

28、k.How canyou accomplish this task,using the fewest physical interfaces and without decreasing networkperformance?A.Add two more FastEthernet interfaces.b b s.h h 010.c o m鸿鹄网-专业的网络技术启蒙学习网站 w w w.h h 010.c o m鸿鹄论坛-专业的网络技术启蒙学习论坛 b b s.h h 010.c o m7B.Add a second router to handle the vlan traffic.C.Us

29、e a hub to connect the four vlans with a FastEthernet interface on router.D.Implement a router-on-a-stick configuration.Answer:DExplanation/Reference:设置一个单臂路由QUESTION 19Refer to the exhibit.How many broadcast domains are configured on switch2?A.5B.20C.4D.1Answer:CExplanation/Reference:一个vlan就是一个广播域Q

30、UESTION 20What is the effect of using the service password-encryption command?A.nly passwords configured after the command has been entered will be encrypted.B.Only the enable password will be encrypted.C.Only the enable secret password will be encryptedD.It will encrypt the secret password and remo

31、ve the enable secret password from the configuration.E.It will encrypt all current and future passwords.Answer:EExplanation/Reference:E.加密已经有的和未来的密码QUESTION 21Refer to the exhibit.A technician has installed SwithchB and needs to configure it for remote access fromthe management workstation connected

32、 SwitchA Which set of commands is required to accomplish thistask?b b s.h h 010.c o m鸿鹄网-专业的网络技术启蒙学习网站 w w w.h h 010.c o m鸿鹄论坛-专业的网络技术启蒙学习论坛 b b s.h h 010.c o m8A.SwitchB(config)#interface FastEthernet 0/1SwitchB(config)#ip address 192.168.8.252 255.255.255.0SwitchB(config)#no shutdownB.SwitchB(conf

33、ig)#ip default-gateway 192.168.8.254SwitchB(config)#interface vlan 1SwitchB(config)#ip address 192.168.8.252 255.255.255.0SwitchB(config)#no shutdownC.SwitchB(config)#interface vlan 1SwitchB(config)#ip address 192.168.8.252 255.255.255.0SwitchB(config)#ip default-gateway 192.168.8.254 255.255.255.0S

34、witchB(config)#no shutdownD.SwitchB(config)#ip default-network 192.168.8.254SwitchB(config)#interface vlan 1SwitchB(config)#ip address 192.168.8.252 255.255.255.0SwitchB(config)#no shutdownAnswer:BExplanation/Reference:想要远程管理交换机需要在交换机上的配置，B正确QUESTION 22Refer to the exhibit.The speed of all serial li

35、nks is E1 and the speed of the all Ethernet links is 100Mb/s.Astatic route will be established on the Manchester router to the direct traffic toward the internet over themost direct path available.What configuration on the Manchester router will establish a router toward theinternet for traffic that

36、 originates from workstation on the Manchester LAN?b b s.h h 010.c o m鸿鹄网-专业的网络技术启蒙学习网站 w w w.h h 010.c o m鸿鹄论坛-专业的网络技术启蒙学习论坛 b b s.h h 010.c o m9A.ip route 0.0.0.0 255.255.255.0 172.16.100.2B.ip route 0.0.0.0 255.255.255.252 128.107.1.1C.ip route 0.0.0.0 0.0.0.0 128.107.1.1D.ip route 0.0.0.0 0.0.0.

37、0 172.16.100.1E.ip route 0.0.0.0 255.255.255.255 172.16.100.2F.ip route 0.0.0.0 0.0.0.0 172.16.100.2Answer:FExplanation/Reference:设置静态路由QUESTION 23What Frame Relay mechanism is used to build the map illustrated in the accompanying graphic?A.inverse multiplexingB.LMI mapingC.Inverse ARPD.ARPE.Proxy A

38、RPAnswer:CExplanation/Reference:帧中继使用Inverse ARP将IP地址解析为DLCI号QUESTION 24b b s.h h 010.c o m鸿鹄网-专业的网络技术启蒙学习网站 w w w.h h 010.c o m鸿鹄论坛-专业的网络技术启蒙学习论坛 b b s.h h 010.c o m10Refer to the exhibit.A network engineer is troubleshooting an internet connectivity problem on thecomputer.What is causing the probl

39、em?A.wrong DNS serverB.wrong default gatewayC.incorrect IP addressD.incorrect subnet maskAnswer:CExplanation/Reference:QUESTION 25How many broadcast domains are shown in the graphic assuming only the default vlan is configured on theswitches?b b s.h h 010.c o m鸿鹄网-专业的网络技术启蒙学习网站 w w w.h h 010.c o m鸿鹄

40、论坛-专业的网络技术启蒙学习论坛 b b s.h h 010.c o m11A.oneB.sixC.twelveD.twoAnswer:AExplanation/Reference:QUESTION 26How dose a DHCP server dynamically assign IP address to host?A.Addresses are allocated after a negotiation between the server and the host to determine the length ofthe agreement.B.Addresses are ass

41、igned for a fixed period of time.At the end of period,a newquest for an address mustbe made,and another address is then assigned.C.Addresses are leased to host.A host will usually keep the same address by periodically contacting theDHCP sever to renew the lease.D.Addresses are permanently assigned s

42、o that the host uses the same address at all times.Answer:CExplanation/Reference:QUESTION 27Which type of EIGRP route entry describes a feasible successor?A.a primary route,stored in the routing tableB.a backup route,stored in the routing tableC.a backup route,stored in the topology tableD.a primary

43、 route,stored in the topology tableAnswer:CExplanation/Reference:可行后继作为替补存在拓扑表中b b s.h h 010.c o m鸿鹄网-专业的网络技术启蒙学习网站 w w w.h h 010.c o m鸿鹄论坛-专业的网络技术启蒙学习论坛 b b s.h h 010.c o m12QUESTION 28What is the purpose of the inverse ARP?A.to map a known DLCI to an IP addressB.to map a known IP address to a MAC

44、addressC.to map known SPID to a MACaddressD.to map a known DLCI to a MAC addressE.to map a known IP address to a SPID.F.to map a known MAC address to an IP addressAnswer:AExplanation/Reference:反向ARP的作用，前面已经讲过QUESTION 29What is the default maximum number of equal-cost paths that can be placed into th

45、e routing of a ciscoOSPF router?A.16B.2C.unlimitedD.4Answer:DExplanation/Reference:OSPF默认等价均衡链路为4条QUESTION 30Which IPV6 routing protocol uses multicast group FF02:9 to send updates?A.RIPngB.OSPFv3C.staticD.IS-IS for IPv6Answer:AExplanation/Reference:RIPng通过组播地址FF02：9更新QUESTION 31What are two benefit

46、s of using NAT?(choose two)A.NAT protects network security because private networks are not advertised.B.NAT accelerates the routing process because no modifications are made on the packets.C.Dynamic NAT facilitates connections from the outside of the network.D.NAT facilitates end-to-end communicati

47、on when IPsec is enable.E.NAT eliminates the need to re-address all host that require extemal access.F.NAT conserves addresses through host MAC-level multiplexing.Answer:AEExplanation/Reference:E.NAT 消除了当需要外部链接时每个主机都需要一个不同IP地址b b s.h h 010.c o m鸿鹄网-专业的网络技术启蒙学习网站 w w w.h h 010.c o m鸿鹄论坛-专业的网络技术启蒙学习论坛

48、 b b s.h h 010.c o m13QUESTION 32Which three statements about RSTP are true?(choose three)A.RSTP significantly reduces topology reconverging time after a link failure.B.RSTP expends the STP port roles by adding the alternate and backup roles.C.RSTP port atates are blocking,discarding,learing,or forw

49、arding.D.RSTP also uses the STP proprsal-agreement sequence.E.RSTP use the same timer-baseed process as STP on point-to-point links.F.RSTP provides a faster transition to the forwarding state on point-to-point links than STP does.Answer:ABFExplanation/Reference:A能够减少汇聚时间B比STP增加了端口角色alternat和backupF在

50、点到点链路提供比STP更快的传输和转发QUESTION 33Refer to the exhibit.The serial0/0 interface of the Tampa router connects the Oriando router.Which twostatements are true about the connection between these two routers?(choose two)A.The only device with which the Tampa router will negotiate a data link is the Orlando r