CCNA考试题目
前面的10几分钟的提问真的很烦人,为什么不改改? 我是在第27题和第55题碰到实验题的。我先说说实验题。 27 战报上有那题少配网络的。具体是说装了三个路由器,但是连不起来。叮当阿毛昨天碰到是中间的少配了 ,所以今天我直奔中间的那个,那知道我是第一个没配好。show run看了一下hostname password 啥都配 好了就差两个网络,广播一下,ping 一下都通。然后存盘ok。有的xd说点连着Router的host进不去有密 码,那个密码不就在题目给你了么?要看清题。还有的xd说配网络一下拓扑图就没有了ip地址看不到了, 起是最好你是先把要广播的地址写在纸上最保险,或者你可以点左边有show topoly看图和地址,待看完 之后再点hidden topoly不就回到路由器配置界面了么? 55 那题配ip 地址的,给我的地址是192.168.81.0/27配第一个网络的第一个地址给e0第二个网络的第一个主 机地址给s1。也就是e0:192.168.81.33 s1:192.168.81.65 然后注意具体配的时候用的不是缺省掩码别 手快给望了,是255.255.255.224。每个断口还有no shutdown。最后再ping一下成功就存盘。这次我碰到 的实验题都配全了,只要配这些东西,所以很简单两题我想只用了不到10分钟吧。 下面是其他58题。(我的是60题一共,我怎么觉得好象是62题?)顺序不一定对。 1:两个路由分别连接两个交换机,交换机下面还有两个主机:host1和host2 其中一个路由地址为a 10.1.34.45/22,另外一个为b 10.1.34.255/22,他们不能互相通信什么原因? a The ethernet1 interface has been assigned a broadcast address b the ethernet1 interface is not assigned aunique network number c host2 has been assigned the gateway subnet mask 255.255.254.0 d host1 has been configured with 255.255.252.0 as the gateway subnet mask e the ethernet0 adn ethernet1 interface are unique network number 答案有两个说法bc和de 这题我放在最上面我想这是必考的题。我选的bc。我认为b:如果e1陪了个不unique 的network number那 它就不能和host连接,当然也就不能帮host路由所以两个host当然不能通信。c,注意这里是254,和/22 252不一样,也就是host2的mask和e1的不一样,那他和router也就连不起来。导致两主机不能通信。 2:The network 172.25.0.0 has been subnetted to accommodate five subnets. Which of the following IP addresses could be assigned to a host in the third subnet if no ip subnet zero command configured on the router? A. 172.25.16.53 B. 172.25.24.1 C. 172.25.45.168 D. 172.25.62.255 E. 172.25.96.1 F. 172.25.118.194 这题我也碰到了,和tallman007兄弟一样。我认为ef都对,但我选的f,听说cisco把没有正确答案的题让 最靠进答案的选想得分。我想f是一定没争议的吧。 3:Which of the following are Application layer protocols that use TCP/IP? (Choose three.) A. ARP B. HTTP C. SMTP D. FTP E. ICMP Answer: B, C, D 这题就不说了,tk原题。 4:An administrator needs ensur that any unauthorized individual trying to remotely access the router CLI will be presented whih an appropriate warning.Which command will accomplish this requirement? a.router#incoming banner motd b.router#banner motd c.router(config)#banner motd d.router(config-line)#banner motd e.router(config-line)#motd banner f.router(config-ling)#banner incoming answer:c 注意是在(config) 5:Which of the following devices support Full Duplex Ethernet ? (Choose two.) A. Switch to host. B. Switch to switch. C. Hub to hub. D. Switch to hub. E. host to host. Answer: A, B,e 这题我记得是最后一题。 6:If you take a dotted-decimal class A IP address such as 10.0.0.1 and convert the first octet to binary. Which of the following is the correct bit pattern for the first octet? A. 0xxxxxxx B. 10xxxxxx C. 110xxxxx D. 1110xxxx E. 11110xxx Answer: A 这题也靠了不过是b类地址,就是选b。 7:Which of the following are reasons to use VLANs? (Choose three.) A. They increase the size of collision domains. B. They allow logical grouping of users by function. C. They enhance network security. D. They increase the size of broadcast domains while decreasing the number of broadcast domains. E. They increase the number of broadcasts domain while decreasing their size. F. The simplify switch administration. Answer: B, C, E 原题 8: Which show commands can you use to identify the local DLCI number? (Choose two.) A. Show frame-relay local-dlci B. Show frame-relay pvc C. Show frame-relay dlci D. Show frame-relay map E. Show ip route Answer: B, D 9:There are some differences between routed and routing protocols. Which of the following are examples of those differences? (Choose two.) A. A routed protocol is assigned to an interface and determines the method of packet delivery. B. A routing protocol determines the path of a packet through a network. C. A routed protocol determines the path of a packet through a network. D. A routing protocol operates at the transport layer of the OSI model. E. A routed protocol updates the routing table of a router. Answer: A, B 10:Using a protocol analyzer you determine your LAN traffic is experiencing congestion. What could be some possible causes for a congested network? (Choose four.) A. Too many hosts in a broadcast domain. B. Full Duplex operation. C. Broadcast storms. D. Multicasting. E. Segmentation. F. Low bandwidth. Answer: A, C, D, F 11: Which layer of the OSI model handles data translation, code formatting, and encryption occur? A. Physical B. Data link C. Network D. Transport E. Session F. Presentation Answer: F 12:You have hired a new consultant to help you setup and configure a router in the Florida office. You are located in the company headquarters in Atlanta from the DOS command prompt, you are able to ping a router but are unable to telnet it. What is most likely causing this problem? A. The PC has a bad network interface card. B. The IP address of the router is on a different subnet. C. No password has been set on the router vty lines. D. The default gateway is not set on the PC. E. The IP address of the workstation is incorrect. Answer: C 13:RouterC does not appear to be receiving RIP updates from RouterB, which command can you enter on RouterC to see if it is receiving these RIP updates? A. Show ip protocols. B. Show ip route rip. C. Debug ip rip. D. Debug ip updates. E. Debug ip transactions. Answer: C 14:Users on your network 10.1.0.0/16 are complaining that they cannot access the company's intranet server using the FQDN www.snowball.com. You are able to ping the IP address but you cannot ping www.snowball.com. What is the likely cause of this problem? A. TCP/IP failure. B. DNS failure. C. FTP failure. D. SNMP failure. Answer: B 可能叙述的不一样但答案连顺序都是一样的。 15:Using the address 192.64.10.0/28 how many subnets and hosts are available? A. 62 networks and 2 hosts B. 6 networks and 30 hosts C. 8 networks and 32 hosts D. 16 networks and 16 hosts E. 14 networks and 14 hosts Answer: E 好性也靠到了。反正这种酸主机,子网的题目很多。 16:Which command will provide you with information regarding the Layer 3 IP address of a directly connected neighbor? A. Show ip interface B. Show cdb neighbors C. Show cdp neighbors detail D. Show ip route E. Show ip link status F. Telnet Answer: C 原题 17:The ABC Company has hired you as a consultant to add a new VLAN named SALES to there existing switched network. Which of the following are true regarding configuration of this VLAN? (Choose three.) A. The VLAN must be created. B. The VLAN must be named. C. An IP address must be configured for the SALES VLAN. D. The desired ports must be added to the new VLAN: E. The VLAN must be added to the STP domain. Answer: A, B, D 描述不一样,这种题我做到两题问的和答案都差不多。当时我还以为前面的做错了呢。 18: Which of the following correctly describe steps in the OSI data encapsulation process? (Choose two) A. Transport layer divides a data stream into segments & adds reliability & flow control information B. Data link layer adds physical source & destination address & an FCS to the segment C. Packets are created when the network layer encapsulate a frame with source & destination host address & protocol related control information D. Packets are created when the network layers adds layers 3 address & control information to a segment E. The presentation layer translated bits into bits into voltages for transmission across the physical link Answer: A, D 原题 19:Which command is used to display the placement and direction of an IP access control list on a router? A. show access-list B. show ip route C. show ip interface D. show interface E. show interface list F. show ip interface brief Answer: C 这种题也考了好几个。 20:C,D. There are no such commands. QUESTION NO: 353 Exhibit: hostname tess hostname tess ! ! username tess password testking ! username tess password testking ! ! interface serial 0 interface serial 0 ip address 172.23.56.2 255.255.255.0 ip address 172.23.56.3 255.255.255.0 encapsulation ppp encapsulation ppp ppp authentication chap ppp authentication chap clockrate 56000 The output shown in the exhibit was taken from two directly connected routers. Based on the output, which of the following would be displayed when the command Router# show interface serial 0 is entered? (Choose two) A. Serial 0 is up, line protocol is up B. Serial 0 is up, line protocol is down C. LCP open D. LCP closed Answer: B, D 变形题。但和这差不多答案也一样 21:填空题还是一个b类地址每个子网要400多台主机的子网掩码, 是255。255。254。0 tk原题。 22:有点想这题不过问的是igrp要加as。 QUESTION NO: 10 Your company has decided to use IP RIP version 1 as the routing protocol. Which of the following are the commands you can use to configure IP RIP version 1 on your router? A. Router RIP network 172.16.1.0 network 10.1.0.1 B. Router RIP network 172.16.0.0 network 10.0.0.0 C. Router RIP network 172.16.1.0 172.16.1.1 network 10.1.0.0 10.1.1.1 D. Router RIP network 172.16.1.0 265.255.255.0 Network 10.1.0.0 255.255.0.0 Answer: B 23:QUESTION NO: 11 Spanning-Tree was originally developed by DEC. What is the reason Spanning-Tree is used in a switched LAN? A. To provide a mechanism for network monitoring in switched environments. B. To prevent routing loops in networks with redundant paths. C. To prevent routing switching loops in networks with redundant switched paths. D. To manage, the addition, deletion, and naming of VLANs across multiple switches. E. To segment a network into multiple collision domains. Answer: B 这道争议题,tk上答案不对真正考到的c是switching loops.所以选c。 24:QUESTION NO: 12 Switches have three primary modes to handle frame switching. Which two statements about the store and forward switching method are true? (Choose two) A. Latency remains constant regardless of frame size. B. Latency through the switch varies with frame length. C. The switch receives the complete frame before beginning to forward it. D. The switch checks the destination address as soon as it receives the header and begins forwarding the frame immediately. Answer B, C 原题
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