CCNA 3 Practice Final v5.0 Exam Answers 2015 (100%)

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1 CCNA 3 Practice Final v5.0 Exam Answers 2015 (100%) 1. Which technlgical factr determines the impact f a failure dmain? the number f layers f the hierarchical netwrk the number f users n the access layer the rle f the malfunctining device the frwarding rate f the switches used n the access layer 2. Which ruting prtcl is able t scale fr large netwrks and utilizes nnbackbne areas fr expansin? EIGRP BGP OSPF RIPv2 3. Which mdel and which tw characteristics wuld be mre likely t be cnsidered in purchasing an access layer switch, as cmpared t buying switches that perate at the ther layers f the Cisc hierarchical design mdel? (Chse three.) Catalyst 2960 Catalyst 4500X number f prts PE EtherChannel RSTP 4. What are tw reasns t install a single 48-prt fixed cnfiguratin switch, rather than tw 24-prt fixed cnfiguratin switches, in a wiring clset that supprts tw classrms? (Chse tw.) mre pwer prvided t each prt mre prts available fr end devices higher uplink speeds reduced pwer and space requirements reduced number f VLANs/bradcast dmains 5. In the Cisc hierarchical design mdel, which layer is mre likely t have a fixed cnfiguratin switch than the ther layers? CCNA 5 Page 1

2 distributin transprt internet access cre 6. What are tw requirements when using ut-f-band cnfiguratin f a Cisc IOS netwrk device? (Chse tw.) HTTP access t the device a terminal emulatin client Telnet r SSH access t the device a direct cnnectin t the cnsle r AUX prt a cnnectin t an peratinal netwrk interface n the device 7. Which prt rle is assigned t the switch prt that has the lwest cst t reach the rt bridge? rt prt nn-designated prt designated prt disabled prt 8. What tw STP features are incrprated int Rapid PVST+? (Chse tw.) UplinkFast PrtFast BPDU guard BPDU filter BackbneFast lp guard 9. Refer t the exhibit. A netwrk administratr is verifying the bridge ID and the status f this switch in the STP electin. Which statement is crrect based n the cmmand utput? CCNA 5 Page 2

3 The bridge pririty f Switch_2 has been lwered t a predefined value t becme the rt bridge. The bridge pririty f Switch_2 has been lwered t a predefined value t becme the backup rt bridge. The STP instance n Switch_2 is failing due t n prts being blcked and all switches believing they are the rt. The STP instance n Switch_2 is using the default STP pririty and the electin is based n Switch_2 MAC address. 10. When the shw spanning-tree vlan 33 cmmand is issued n a switch, three prts are shwn in the frwarding state. In which tw prt rles culd these interfaces functin while in the frwarding state? (Chse tw.) disabled designated rt alternate blcked 11. A netwrk administratr is analyzing first-hp ruter redundancy prtcls. What is a characteristic f VRRPv3? 1. VRRPv3 is Cisc prprietary. 2. It supprts IPv6 and IPv4 addressing. 3. It wrks tgether with HSRP. 4. It allws lad balancing between ruters. 12. Refer t the exhibit. Which switching technlgy wuld allw data t be transmitted ver each access layer switch link and prevent the prt frm being blcked by spanning tree due t the redundant link? CCNA 5 Page 3

4 EtherChannel HSRP PrtFast Trunking 13. A netwrk administratr has cnfigured an EtherChannel between tw switches that are cnnected via fur trunk links. If the physical interface fr ne f the trunk links changes t a dwn state, what happens t the EtherChannel? The EtherChannel will transitin t a dwn state. Spanning Tree Prtcl will recalculate the remaining trunk links. The EtherChannel will remain functinal. Spanning Tree Prtcl will transitin the failed physical interface int frwarding mde. 14. What are tw advantages f EtherChannel? (Chse tw.) Cnfiguring the EtherChannel interface prvides cnsistency in the cnfiguratin f the physical links. Lad balancing ccurs between links cnfigured as different EtherChannels. EtherChannel uses upgraded physical links t prvide increased bandwidth. Spanning Tree Prtcl views the physical links in an EtherChannel as ne lgical cnnectin. Spanning Tree Prtcl ensures redundancy by transitining failed interfaces in an EtherChannel t a frwarding state. 15. When a range f prts is being cnfigured fr EtherChannel, which mde will cnfigure LACP n a prt nly if the prt receives LACP packets frm anther device? active aut desirable passive CCNA 5 Page 4

5 16. Which tw parameters must match n the prts f tw switches t create a PAgP EtherChannel between the switches? (Chse tw.) MAC address speed VLAN infrmatin PAgP mde prt ID 17. When EtherChannel is cnfigured, which mde will frce an interface int a prt channel withut exchanging aggregatin prtcl packets? active aut n desirable 18. Which cmmand will start the prcess t bundle tw physical interfaces t create an EtherChannel grup via LACP? channel-grup 2 mde aut interface prt-channel 2 channel-grup 1 mde desirable interface range GigabitEthernet 0/ Refer t the exhibit. Based n the cmmand utput shwn, what is the status f the EtherChannel? The EtherChannel is dynamic and is using prts Fa0/10 and Fa0/11 as passive prts. The EtherChannel is dwn as evidenced by the prtcl field being empty. CCNA 5 Page 5

6 The EtherChannel is partially functinal as indicated by the P flags fr the FastEthernet prts. The EtherChannel is in use and functinal as indicated by the SU and P flags in the cmmand utput. 20. Which wireless netwrk tplgy wuld be used by netwrk engineers t prvide a wireless netwrk fr an entire cllege building? ad hc htspt infrastructure mixed mde 21. In wireless netwrks what is a disadvantage f using mixed mde n an AP? Only n wireless NICs can attach t the AP. Devices must be clser t the AP due t the limited distance range. The wireless netwrk perates slwer if ne device uses an lder standard wireless NIC. N encryptin can be used by the AP r by the wireless NIC that is attached t the AP. 22. When wuld a netwrk engineer cnfigure an access pint with channel bnding? when security is an issue when mre thrughput is needed when lder wireless NICs are being used when trunking is enabled between the access pint and switch 23. Which methd f wireless authenticatin is currently cnsidered t be the strngest? WEP WPA WPA2 pen shared key 24. What is a wireless security mde that requires a RADIUS server t authenticate wireless users? enterprise persnal CCNA 5 Page 6

7 shared key WEP 25. A laptp cannt cnnect t a wireless access pint. Which tw trubleshting steps shuld be taken first? (Chse tw.) Ensure that the wireless NIC is enabled. Ensure that the laptp antenna is attached. Ensure that the wireless SSID is chsen. Ensure that the crrect netwrk media is selected. Ensure that the NIC is cnfigured fr the prper frequency. 26. A netwrk engineer is trubleshting a newly deplyed wireless netwrk that is using the latest standards. When users access high bandwidth services such as streaming vide, the wireless netwrk perfrmance is pr. T imprve perfrmance the netwrk engineer decides t cnfigure a 5 Ghz frequency band SSID and train users t use that SSID fr streaming media services. Why might this slutin imprve the wireless netwrk perfrmance fr that type f service? The 5 GHz band has a greater range and is therefre likely t be interference-free. Requiring the users t switch t the 5 GHz band fr streaming media is incnvenient and will result in fewer users accessing these services. The 5 GHz band has mre channels and is less crwded than the 2.4 GHz band, which makes it mre suited t streaming multimedia. The nly users that can switch t the 5 GHz band will be thse with the latest wireless NICs, which will reduce usage. 27. Refer t the exhibit. Hw did this ruter learn f the highlighted rute in the ruting table? by entering the ruter cnfiguratin mde cmmand default-infrmatin riginate by entering the glbal cnfiguratin mde cmmand ip rute interface-type interface-number CCNA 5 Page 7

8 by entering the glbal cnfiguratin mde cmmand ip rute ipaddress by receiving an update frm anther OSPF ruter that is running anther ruting prtcl by receiving an update frm anther OSPF ruter that has the default-infrmatin riginate cmmand cnfigured 28. Refer t the exhibit. What are tw cnsequences f issuing the displayed cmmands? (Chse tw.) The ruting update infrmatin is prtected against being falsified. The ruting table f R2 will be secured. The key is encrypted with the MD5 hashing algrithm. OSPF rutes will get pririty ver EIGRP rutes ging int the ruting table. The verhead f OSPF infrmatin exchange will reduce. 29. What des an OSPF area cntain? ruters that share the same ruter ID ruters whse SPF trees are identical ruters that have the same link-state infrmatin in their LSDBs ruters that share the same prcess ID 30. Refer t the exhibit. Why are sme f the entries marked O IA? CCNA 5 Page 8

9 They crrespnd t entries that are learned frm ther areas. They crrespnd t entries that are learned frm ther ruting prtcls. They represent summary rutes that are internal t the area. They are default rutes that are learned frm ther ruting prtcls. 31. In which mde is the area area-id range address mask cmmand issued when multiarea OSPF summarizatin is being cnfigured? glbal cnfiguratin mde ruter cnfiguratin mde interface cnfiguratin mde f area 0 interfaces interface cnfiguratin mde f all participating interfaces 32. Refer t the exhibit. What tw pieces f infrmatin culd be determined by a netwrk administratr frm this utput? (Chse tw.) R1 is participating in multiarea OSPF. The OSPF prcess number that is being used is 0. Interface Fa0/1 is nt participating in the OSPF prcess. R1 is the distributin pint fr the ruters that are attached t the netwrk. CCNA 5 Page 9

10 The metric that will be installed in the ruting table fr the rute will be 65 (64+1). 33. Which statement describes the Autnmus System number that is used in EIGRP? It defines the reliability f the EIGRP ruting prtcl. It identifies the pririty f the netwrks t be included in update packets. It is assciated with the glbal Autnmus System number that is assigned by IANA. It specifies the EIGRP ruting prcess n a ruter. 34. What are tw reasns t implement passive interfaces in the EIGRP cnfiguratin f a Cisc ruter? (Chse tw.) t prvide increased netwrk security t shut dwn unused interfaces t avid unnecessary update traffic t mitigate attacks cming frm the interfaces t exclude interfaces frm lad balancing 35. Refer t the exhibit. A netwrk administratr has issued the shw ip eigrp neighbrs cmmand. What can be cncluded frm the utput? There is n incming EIGRP message at this mment. The first EIGRP neighbr R1 learned abut has the IP address An EIGRP neighbr with IP address is cnnected t R1 via serial interface 0/1/0. If R1 des nt receive a Hell packet in 4 secnds frm the neighbr with IP , it will declare the neighbr is dwn. 36. Refer t the exhibit. A netwrk administratr issues the shw ip prtcls cmmand. Based n the exhibited utput, what can be cncluded? CCNA 5 Page 10

11 The EIGRP K values are default values. R1 receives rutes t the netwrk /24 and /24. The n aut-summary cmmand is nt applied fr the EIGRP peratin. Up t 4 rutes f different metric values t the same destinatin netwrk will be included in the ruting table. 37. Refer t the exhibit. Tw ruters have been cnfigured t use EIGRP. Packets are nt being frwarded between the tw ruters. What culd be the prblem? EIGRP des nt supprt VLSM. The ruters were nt cnfigured t mnitr neighbr adjacency changes. The default bandwidth was used n the ruters. An incrrect IP address was cnfigured n a ruter interface. 38. Which tw metric weights are set t ne by default when csts in EIGRP are being calculated? (Chse tw.) k1 k2 k3 k4 k5 CCNA 5 Page 11

12 k6 39. Which cmmand can be issued n a ruter t display infrmatin abut the successrs and feasible successrs fr a destinatin netwrk when EIGRP is used as the ruting prtcl? shw ip prtcls shw ip eigrp tplgy shw ip eigrp interfaces shw ip eigrp neighbrs 40. Refer t the exhibit. An administratr attempts t cnfigure EIGRP fr IPv6 n a ruter and receives the errr message that is shwn. Which cmmand must be issued by the administratr befre EIGRP fr IPv6 can be cnfigured? n shutdwn eigrp ruter-id ipv6 unicast-ruting ipv6 eigrp 100 ipv6 cef 41. A netwrk administratr is cnfiguring the authenticatin fr EIGRP ruting. The administratr enters these cmmands: R1(cnfig)# key chain THE_KEY R1(cnfig-keychain)# key 1 R1(cnfig-keychain-key)# key-string key123 What is the next step necessary t enable the authenticatin fr EIGRP ruting? Cnfigure the pririty f authenticatin algrithms t be used. Cnfigure the authenticatin n all interfaces that are participating in EIGRP. Cnfigure an ACL t identify the netwrks that are participating in EIGRP. Cnfigure the authenticatin in the ruter eigrp as-number cnfiguratin mde. 42. Refer t the exhibit. Why did R1 and R2 nt establish an adjacency? CCNA 5 Page 12

13 The AS number des nt match n R1 and R2. The autmatic summarizatin is enabled n R1 and R2. The IPv4 address f Fa0/0 interface f R1 has a wrng IP address. There is n netwrk cmmand fr the netwrk /24 n R A netwrk administratr is trubleshting the EIGRP ruting between tw ruters, R1 and R2. The prblem is fund t be that nly sme, but nt all netwrks attached t R1 are listed in the ruting table f ruter R2. What shuld the administratr investigate n ruter R1 t determine the cause f the prblem? Des the AS number match the AS number n R2? Des the hell interval setting match the hell interval n R2? D the netwrk cmmands include all the netwrks t be advertised? Is the interface cnnected t R2 cnfigured as a passive interface? 44. Fr trubleshting missing EIGRP rutes n a ruter, what three types f infrmatin can be cllected using the shw ip prtcls cmmand? (Chse three.) any interfaces that are enabled fr EIGRP authenticatin any interfaces n the ruter that are cnfigured as passive the IP addresses that are cnfigured n adjacent ruters any ACLs that are affecting the EIGRP ruting prcess netwrks that are unadvertised by the EIGRP ruting prtcl the lcal interface that is used t establish an adjacency with EIGRP neighbrs CCNA 5 Page 13

14 45. Refer t the exhibit. The ruting table n R2 des nt include all netwrks that are attached t R1. The netwrk administratr verifies that the netwrk statement is cnfigured t include these tw netwrks. What is a pssible cause f the issue? The AS number des nt match between R1 and R2. The netwrk statements shuld include the wild card mask. The n aut-summary cmmand is missing in the R1 cnfiguratin. The interfaces that are cnnected t these tw netwrks are cnfigured as passive interfaces. 46. What are three characteristics f the Cisc IOS Sftware Release 12.4T train? (Chse three.) It requires the activatin f a license. It has a number f embedded technlgy packages. It is updated with new features and hardware supprt. It is derived frm the Cisc IOS Sftware Release 12.4 Mainline train. It has extended maintenance new feature releases apprximately every 16 t 20 mnths. It receives regular sftware fixes that are synchrnized with the 12.4 Mainline train. 47. If a cmpany wants t upgrade a Cisc 2800 ruter frm IOS 12.4T, what IOS shuld be recmmended fr a stable ruter platfrm? CCNA 5 Page 14

15 12.5T 13.1T M 48. A ruter has been remved frm the netwrk fr maintenance. A new Cisc IOS sftware image has been successfully dwnladed t a server and cpied int the flash f the ruter. What shuld be dne befre placing the ruter back int service? Back up the new image. Cpy the running cnfiguratin t NVRAM. Delete the previus versin f the Cisc IOS sftware frm flash. Restart the ruter and verify that the new image starts successfully. 49. Which step supprts disaster recvery and shuld be perfrmed first when upgrading an IOS system image n a Cisc ruter? Delete the current image frm flash memry. Cpy the current image frm the ruter t a TFTP server. Use the bt system cmmand t cnfigure the ruter t lad the new image. Cnfigure the ruter t lad the new image frm the TFTP server. 50. Refer t the exhibit. A netwrk engineer is preparing t upgrade the IOS system image n a Cisc 2901 ruter. Based n the utput shwn, hw much space is available fr the new image? bytes bytes bytes bytes 51. The custmer f a netwrking cmpany requires VPN cnnectivity fr wrkers wh must travel frequently. T supprt the VPN server, the custmer ruter must be upgraded t a new Cisc IOS sftware versin with the Advanced IP CCNA 5 Page 15

16 Services feature set. What shuld the field engineer d befre cpying the new IOS t the ruter? Set the ruter t lad the new IOS image file directly frm the TFTP server n the next rebt. Delete the currently installed IOS by using the erase flash: cmmand, and relad the ruter. Issue the shw running-cnfiguratin cmmand t determine the features f the currently installed IOS image file. Issue the shw versin and the shw flash cmmands t ensure that the ruter has enugh memry and file space t supprt the new IOS image. 52. Fill in the blank. In RSTP, BPDU frames are sent every 2 secnds by default. 53. Fill in the blank. EIGRP keeps feasible successr rutes in the tplgy table. 54. Fill in the blank. By default, EIGRP is able t use up t 50 percent f the bandwidth fr EIGRP messages n an EIGRP-enabled interface. 55. Match the switched LAN prblem t the crrect symptm. (Nt all ptins are used.) 56. Match the step number t the sequence f stages that ccur during the HSRP failver prcess. (Nt all ptins are used.) CCNA 5 Page 16

17 57. Match each OSPF LSA descriptin with its type. (Nt all ptins are used.) 58. Match the step sequence t the multiarea OSPF rute calculatin prcess. (Nt all ptins are used.) CCNA 5 Page 17

18 59. Open the PT Activity. Perfrm the tasks in the activity instructins and then answer the questin. Which message was displayed n the web server? Yu ve made it! Cngratulatins! Wnderful wrk! Wrk dne! 60. Open the PT Activity. Perfrm the tasks in the activity instructins and then answer the questin. Why are users in the OSPF netwrk nt able t access the Internet? The default rute is nt redistributed crrectly frm ruter R1 by OSPF. The interface that is cnnected t the ISP ruter is dwn. The OSPF netwrk statements are miscnfigured n ruters R2 and R3. The OSPF timers that are cnfigured n ruters R1, R2, and R3 are nt cmpatible. The netwrk statement is miscnfigured n ruter R1. CCNA 5 Page 18