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Reference:考點:考查距離矢量路由協(xié)議特性A:周期性更新,正確B:發(fā)送整個路由表到整個路由域,錯誤,只發(fā)送給鄰居C:使用SPF算法,錯誤D:依靠鄰居發(fā)送更新來更新路由表,正確E:在數據庫中維護整個網絡的拓撲。QUESTION 41Which mand shows if an access list is assigned to an interface?A. show ip interface [interface] accesslistsB. show ip accesslists interface [interface]C. show ip interface [interface]D. show ip accesslists [interface]Answer: CSection: Chapter 7: SecurityExplanation/Reference:QUESTION 42Refer to the exhibit. Which rule does the DHCP server use when there is an IP address conflict?A. The address is removed from the pool until the conflict is resolved.B. The address remains in the pool until the conflict is resolved.C. Only the IP detected by Gratuitous ARP is removed from the pool.D. Only the IP detected by Ping is removed from the pool.E. The IP will be shown, even after the conflict is resolved.Answer: ASection: Chapter 5: Managing Cisco IOSExplanation/Reference:show ip dhcp conflict命令可以查看哪些ip地址在使用上有沖突。A:地址被刪除直到沖突解決,正確B:地址保留直到沖突解決,錯誤C/D:答案片面。錯誤。D:查看啟用了ospf的接口的相關信息。C:如果配置了密碼,設置不會運行D:設置不可用,因為它只能在沒有配置存在時才有效。通告network網段實現。QUESTION 47Refer to the exhibit. What type of connection would be supported by the cable diagram shown?A. PC to routerB. PC to switchC. server to routerD. router to routerAnswer: BSection: Chapter 1: IntroductionExplanation/Reference:從圖中可以看出這是一條直通線。B:直通線AC/D同構設備使用交叉線QUESTION 48Refer to the exhibit. What type of connection would be supported by the cable diagram shown?A. PC to routerB. PC to switchC. server to switchD. switch to routerAnswer: ASection: Chapter 1: IntroductionExplanation/Reference:QUESTION 49Which two statements describe the Cisco implementation of VLANs? (Choose two.)A. VLAN 1 is the default Ethernet VLAN.B. CDP advertisements are only sent on VLAN 1002.C. By default, the management VLAN is VLAN 1005.D. By default, the switch IP address is in VLAN 1005.E. VLAN 1002 through 1005 are automatically created and cannot be deleted.Answer: AESection: (none)Explanation/Reference:考點:考查vlan知識點。C:缺省情況交換機IP配置在vlan1005,錯誤,vlan1005trnet網絡的vlan號。D:vlan10021005自動生成并不能被刪除,正確,他們都是被保留的特殊vlan。提示進入對話模式,說明沒有保存配置文件。prefixlength QUESTION 53Refer to the exhibit. An administrator pings the default gateway at and sees the output asshown. At which OSI layer is the problem?A. data link layerB. application layerC. access layerD. session layerE. network layerAnswer: ESection: Chapter 2: TCP/IPExplanation/Reference:ping調用icmp,ping不通是網絡層的原因。QUESTION 55Refer to the exhibit. The user at Workstation B reports that Server A cannot be reached. What ispreventing Workstation B from reaching Server A?A. The IP address for Server A is a broadcast address.B. The IP address for Workstation B is a subnet address.C. The gateway for Workstation B is not on the same subnet.D. The gateway for Server A is not on the same subnet.Answer: DSection: Chapter 6: IP RoutingExplanation/Reference::。QUESTION 57Refer to the exhibit. What mand sequence will enable PAT from the inside to outside network?A. (config) ip nat pool ispnet netmask overloadB. (configif) ip nat outside overloadC. (config) ip nat inside source list 1 interface ethernet1 overloadD. (configif) ip nat inside overloadAnswer: CSection: Chapter 8: NATExplanation/Reference:overload是配置PAT的關鍵字QUESTION 58Refer to the exhibit. What will happen to HTTP traffic ing from the Internet that is destined for if the traffic is processed by this ACL?A. Traffic will be dropped per line 30 of the ACL.B. Traffic will be accepted per line 40 of the ACL.C. Traffic will be dropped, because of the implicit deny all at the end of the ACL.D. Traffic will be accepted, because the source address is not covered by the ACL.Answer: CSection: Chapter 7: SecurityExplanation/Reference:ACL匹配規(guī)則:自上而下匹配,一旦匹配則終止,沒有匹配到的丟棄。list 101中 10生效,20無效。QUESTION 60What are three advantages of VLANs? (Choose three.)A. VLANs establish broadcast domains in switched networks.B. VLANs utilize packet filtering to enhance network security.C. VLANs provide a method of conserving IP addresses in large networks.D. VLANs provide a lowlatency internetworking alternative to routed networks.E. VLANs allow access to network services based on department, not physical location.F. VLANs can greatly simplify adding, moving, or changing hosts on the network.Answer: AEFSection: Chapter 10: VLANExplanation/Reference:A:VLAN在交換網絡中建立廣播域,正確B:利用VLAN的數據包過濾,增強網絡的安全性。C:提供了在大型網絡中的保護IP地址的方法。D:提供低延遲互聯(lián)網絡替代路由網絡。正確。正確。QUESTION 62Which of the following host addresses are members of networks that can be routed across the publicInternet? (Choose three.)A. B. C. D. E. F. Answer: CEFSection: Chapter 3: IP Addressing and VLSMExplanation/Reference:考查公有IP地址的范圍。QUESTION 63Given a subnet mask of , which of the following addresses can be assigned to networkhosts? (Choose three.)A. B. C. D. E. F. Answer: BCDSection: Chapter 3: IP Addressing and VLSMExplanation/Reference:QUESTION 64Which of the following are benefits of VLANs? (Choose three.)A. They increase the size of collision domains.B. They allow logical grouping of users by function.C. They can enhance network security.D. They increase the size of broadcast domains while decreasing the number of collision domains.E. They increase the number of broadcast domains while decreasing the size of the broadcast domains.F. They simplify switch administration.Answer: BCESection: Chapter 10: VLANExplanation/Reference:考查VLAN的特點A:增加沖突域的大小,錯誤B:允許邏輯劃分網段,正確C:增強網絡安全,正確。D:當減少沖突域時增加廣播域的大小。正確。答非所問。在以太網尋址的時候,依靠的事MAC地址,每一個網段都需要尋找到自己的下一條(gateway)以自己的MAC作為source gateway的mac作為destination封裝Frame,然后將Frame轉發(fā)出去 ,但是數據包是不會進行變化的,也就是packet的頭部信息不會發(fā)生改變。相同設備用crossover不同設備用cutthought線纜。錯誤B:交換機是一個多端口網橋。錯誤E:網橋和交換機增加沖突域的大小,錯誤。B:廣播被淘汰。錯誤D:廣播不會穿越路由器,正確。錯