Ccna2 Correction Exam Final Octobre 2009

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Refer to the exhibit. What happens to a packet that has 172.16.0.0/16 as the best match in the routing table that is shown? CCNA Exploration 2 final exam 30oct09 The packet is discarded. XXX 90% The packet is flooded out all interfaces. The packet is forwarded via Serial0/0/0. - let’s enjoy the show ;) The packet is forwarded via FastEthernet0/0. 2

Refer to the exhibit. OSPF is used for the routing protocol and all interfaces are configured with the correct IP addresses and subnet masks. During testing, it is found that router R1 is unable to form an adjacency with R2. What is the cause of this problem? Both routers have been configured with incorrect router IDs. Both routers have been configured in different OSPF areas. Both routers have been configured with an incorrect network type. Both routers have been configured with different hello and dead intervals. XXX

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Refer to the exhibit. A technician has configured the interfaces on the Router, but upon inspection discovers that interface FastEthernet0/1 is not functioning. Which action will most likely correct the problem with FastEthernet0/1? A clock rate should be added to the interface configuration. The subnet mask should be added to the interface configuration. An interface description needs to be added to the interface configuration. The no shutdown command needs to be added to the interface configuration. XXX 4

Refer to the exhibit. The network is running the RIP routing protocol. Network 10.0.0.0 goes down. Which statement is true regarding how the routers in this topology will respond to this event? Router4 will learn about the failed route 30 seconds later in the next periodic update. Split horizon will prevent Router4 from fowarding packets to the 10.0.0.0 network until the holddown timer expires. Router5 immediately flushes the unreachable route from its routing table. Router5 will send Router4 a triggered update with a metric of 16 for network 10.0.0.0. XXX

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Refer to the exhibit. A network administrator adds this command to router R1: ip route 192.168.2.0 255.255.255.0 S0/0/0. What is the result of adding this command? This route is automatically propagated throughout the network. The traffic for network 172.16.1.0 is forwarded to network 192.168.2.0. A static route is established. XXX The traffic for all Class C networks is forwarded to 172.16.1.2.

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www.ccna4u.org www.ccna4u.net www.ccna4u.info 6 Which phase of the router boot process involves running diagnostics on the hardware components from ROM? performing the POST XXX loading the bootstrap program locating and loading the Cisco IOS software locating and loading the startup configuration file 7

Refer to the exhibit. Pings are failing between HostA and HostB. The network administrator discovers that Router1 does not have a route to the 172.16.0.0 network. Assuming Router2 is configured correctly, which two static routes could be configured on Router1 to enable Host A to reach network 172.16.0.0? (Choose two.) ip route 172.16.0.0 255.255.0.0 S0/0 X ip route 172.16.0.0 255.255.0.0 S0/1 ip route 172.16.0.0 255.255.0.0 192.168.0.1 ip route 172.16.0.0 255.255.0.0 192.168.0.2 XXX ip route 192.168.0.1 172.16.0.0 255.255.0.0 S0/0 ip route 192.168.0.1 172.16.0.0 255.255.0.0 S0/1 8 Which statement is true about the RIPv1 protocol? It is a link-state routing protocol. xxx It excludes subnet information from the routing updates. It uses the DUAL algorithm to insert backup routes into the topology table. It uses classless routing as the default method on the router.

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Refer to the exhibit. Which combination of IP address and subnet mask can be used on the serial interface of Router2 in order to put the interface in the same network as the serial interface of Router1? IP 172.16.0.18, subnet mask 255.255.255.0 IP 172.16.32.15, subnet mask 255.255.255.240 IP 172.16.0.18, subnet mask 255.255.255.252 IP 172.16.32.18, subnet mask 255.255.255.252 XXX

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Refer to the exhibit. A network administrator is accessing router R1 from the console port. Once the administrator is connected to the router, which password should the administrator enter at the R1> prompt to access the privileged EXEC mode? Cisco001 Cisco123 Cisco789 XXX Cisco901

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Refer to the exhibit. When the show cdp neighbors command is issued from router C, which devices will be displayed in the output? B, D XXX A, B, D D, SWH-2 SWH-1, A, B SWH-1, SWH-2 A, B, D, SWH-1, SWH-2

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www.ccna4u.org www.ccna4u.net www.ccna4u.info 12 What does RIP use to reduce convergence time in a larger network? It uses multicast instead of broadcast to send routing updates. It reduces the update timer to 15 seconds if there are more than 10 routes. It uses triggered updates to announce network changes if they happen in between the periodic updates.X It uses random pings to detect if a pathway is down and therefore is preemptive on finding networks that are down. 13

Which routing protocol by default uses bandwidth and delay to calculate the metric of a route? RIPv1 RIPv2 OSPF EIGRP XXX

14 Which of the following are required when adding a network to the OSPF routing process configuration? (Choose three.) network address XXX loopback address autonomous system number subnet mask wildcard mask XXX area ID XXX 15

Refer to the exhibit. When troubleshooting a network, it is important to interpret the output of various router commands. On the basis of the exhibit, which three statements are true? (Choose three.) The missing information for Blank 1 is the command show ip route. XXX The missing information for Blank 1 is the command debug ip route. The missing information for Blank 2 is the number 100. The missing information for Blank 2 is the number 120. XXX The missing information for Blank 3 is the letter R. The missing information for Blank 3 is the letter C. XXX

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How does route poisoning prevent routing loops? New routing updates are ignored until the network has converged. Failed routes are advertised with a metric of infinity. XXX A route is marked as unavailable when its Time to Live is exceeded. The unreachable route is cleared from the routing table after the invalid timer expires.

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Refer to the exhibit. Which path will traffic from the 172.16.1.0/24 network take to get to the 10.0.0.0/24 network? ADC ABC It will load balance the traffic between ADC and ABC XXX It will send the traffic via ABC, and will use ADC as a backup path only when ABC fails. 18

Refer to the exhibit. The network has three connected routers: R1, R2, and R3. The routes of all three routers are displayed. All routers are operational and pings are not blocked on this network. Which ping will fail? from R1 to 172.16.1.1 from R1 to 192.168.3.1 from R2 to 192.168.1.1 from R2 to 192.168.3.1

XXX

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Refer to the exhibit. What information can be determined from the displayed output? EIGRP packets are waiting to be sent to the neighbors. The adjacencies between the routers are yet to be established. The IP address 192.168.10.10 is configured at serial interface S0/0/1 of router R2. Router R2 is receiving hello packets from a neighbor with the IP address 192.168.10.10 via the R2 S0/0/1 interface. XXX 20

Refer to the exhibit. Which route in the routing table of R1 will be discarded by its neighboring router? 192.168.2.0 192.168.3.0 XXX 192.168.4.0 192.168.9.0 192.168.10.0 192.168.11.0 21

Refer to exhibit. Given the topology shown in the exhibit, what three commands are needed to configure EIGRP on the Paris router? (Choose three.) Paris(config)# router eigrp 100 XXX Paris(config)# router eigrp Paris(config-router)# network 192.168.6.0 Paris(config-router)# network 192.168.7.0 XXX Paris(config-router)# network 192.168.8.0 XXX Paris(config-router)# network 192.168.9.0

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www.ccna4u.org www.ccna4u.net www.ccna4u.info 22 Which three statements are true regarding the encapsulation and de-encapsulation of packets when traveling through a router? (Choose three.) The router modifies the TTL field, decrementing it by one. XXX The router changes the source IP to the IP of the exit interface. The router maintains the same source and destination IP. XXX The router changes the source physical address to the physical address of the exit interface. XXX The router changes the destination IP to the IP of the exit interface. The router sends the packet out all other interfaces, besides the one it entered the router on. 23 In a complex lab test environment, a router has discovered four paths to 192.168.1.0/24 via the use of the RIP routing process. Which route will be installed in the routing table after the discovery of all four paths? R 192.168.1.0/24 [120/3] via 192.168.110.1, 00:00:17, Serial0/1/0 R 192.168.1.0/24 [120/2] via 192.168.200.1, 00:00:17, Serial0/0/0 R 192.168.1.0/24 [120/1] via 192.168.100.1, 00:00:17, Serial0/0/1 XXX R 192.168.1.0/24 [120/4] via 192.168.101.1, 00:00:17, Serial0/1/1 24

Refer to the exhibit. A network administrator has run the show interface command. The output of this command is displayed. What is the first step that is required to make this interface operational? Switch the cable with a known working cable. Issue the no shutdown command on the interface. XXX Configure the interface as a loopback interface. Set the encapsulation for the interface. 25

A router boots and enters setup mode. What is the reason for this? The IOS image is corrupt. Cisco IOS is missing from flash memory. The configuration file is missing from NVRAM. XXX The POST process has detected hardware failure.

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26. Refer to the exhibit. An administrator is adding a new subnet of 50 hosts to R3. Which subnet address should be used for the new subnet that provides enough addresses while wasting a minimum of addresses? 192.168.1.0/24 192.168.1.48 /28 192.168.1.32/27 192.168.1.64/26 XXX

27. Refer to the exhibit. Both routers are using the RIPv2 routing protocol and static routes are undefined. R1 can ping 192.168.2.1 and 10.1.1.2, but is unable to ping 192.168.4.1. What is the reason for the ping failure? The serial interface between two routers is down. R2 is not forwarding the routing updates.

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www.ccna4u.org www.ccna4u.net www.ccna4u.info The 192.168.4.0 network is not included in the RIP configuration of R2. RIPv1 needs to be configured.

XXX

28. Which range of IP addresses will be used by RIPv2, EIGRP, and OSPF routing protocols to send routing advertisements?
answer is FIRST Pict, thanx to juragan mustofa :P

29. A static route has been configured on a router. However, the destination network no longer exists. What should an administrator do to remove the static route from the routing table? Change the routing metric for that route. Nothing. The static route will go away on its own. Change the administrative distance for that route. Remove the route using the no ip route command. XXX

30. Refer to the exhibit. Which two routes are child routes? (Choose two.) 10.0.0.0 10.1.2.0 XXX 10.2.2.0 XXX 192.168.1.0 192.168.2.0

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31. Refer to the exhibit. Routers R1 and R2 are directly connected via their serial interfaces and are both running the EIGRP routing protocol. R1 and R2 can ping the directly connected serial interface of their neighbor, but they cannot form an EIGRP neighbor adjacency. What action should be taken to solve this problem? Enable the serial interfaces of both routers. Configure EIGRP to send periodic updates. Configure the same hello interval between the routers. Configure both routers with the same EIGRP process ID. XXX

32. Refer to the exhibit. What are two of the routes added to the routing table of R1? (Choose two.) R 172.16.1.0/24 [120/1] via 192.168.3.0, 00:00:24, Serial0/0/0 R 192.168.1.0/24 [120/1] via 172.16.2.1, 00:00:24, Serial0/0/1 XXX R 192.168.9.0/24 [120/1] via 172.16.1.2, 00:00:24, Serial0/0/0 R 192.168.100.0/24 [120/1] via 172.16.1.1, 00:00:24, Serial0/0/0 XXX R 192.168.2.0/24 [120/1] via 172.16.1.2, 00:00:24, Serial0/0/0

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www.ccna4u.org www.ccna4u.net www.ccna4u.info 33. A router that is using RIPv2 learns of the network 10.10.10.0/24 from two different neighbors. Which value is used by RIPv2 to select the best path to the network? route metric XXX subnet mask longest match administrative distance

34. Refer to the exhibit. All routers are configured for OSPF area 0. The network administrator requires that R2 always be the DR and maintain adjacency. Which two configurations can achieve this? (Choose two.) Change the OSPF area of R2 to a higher value. Change the router ID for R2 by assigning the IP address 172.16.30.5/24 to the Fa0/0 interface. Change the priority values of the Fa0/0 interfaces of R1 and R3 to 0. XXX Configure a loopback interface on R2, with an IP address higher than any IP address on the other routers. XXX Configure R1 and R3 with an IP address whose value is higher than that of R2.

35. Refer to the exhibit. A network administrator has configured OSPF using the following command: network 192.168.1.32 0.0.0.31 area 0 Which router interface will participate in OSPF? FastEthernet0/0 FastEthernet0/1 Serial0/0/0 XXX Serial0/0/1

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36. Refer to the exhibit. All interfaces are addressed and functioning correctly. The network administrator runs the tracert command on host A. Which two facts could be responsible for the output of this command? (Choose two.) The gateway for Host A is missing or improperly configured. The gateway for Host B is missing or improperly configured. The entry for 192.168.1.0/24 is missing from the routing table of R1. The entry for 192.168.1.0/24 is missing from the routing table of R2. XXX The entry for 192.168.2.0/24 is missing from the routing table of R1. XXX The entry for 192.168.2.0/24 is missing from the routing table of R2.

37. A network administrator has configured a default route on Router_A but it is not being shared with adjacent Router_B and the other routers in the OSPF area. Which command will save the administrator the time and trouble of configuring this default route on Router_B and all of the other routers in the OSPF area? Router_A(config-router)# ospf redistribute default-route Router_B(config-router)# ospf redistribute default-route Router_A(config-router)# default-information originate XXX Router_B(config-router)# default-information originate Router_A(config-router)# ip ospf update-default Router_B(config-router)# ip ospf update-default

38. Refer to the exhibit. A device is required to complete the connection between router R1 and the WAN. Which two devices can be used for this? (Choose two.) a CSU/DSU device XXX a modem XXX an Ethernet switch a hub a bridge

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www.ccna4u.org www.ccna4u.net www.ccna4u.info 39. The command ip route 192.168.2.0 255.255.255.0 172.16.2.2 was entered into the router. After network changes were made, the new next hop for the 192.168.2.0/24 network is 172.16.5.1. What should an administrator do so that the router will use the new next hop to reach the 192.168.2.0 network? Enter the command clear ip route *. Lower the administrative distance for the new path to ensure that it is used first. Negate the original command and enter a new static route with the new next hop. XXX Nothing. The router will learn of the new next hop and automatically update the route table.

40. Refer to the exhibit. Which host has a combination of IP address and subnet mask on the same network as Fa0/0 of Router1? host A host B XXX host C host D

41. Refer to the exhibit. What is the meaning of the highlighted value 120? It is the metric that is calculated by the routing protocol. It is the value that is used by the DUAL algorithm to determine the bandwidth for the link. It is the administrative distance of the routing protocol. XXX It is the hold-down time, measured in seconds, before the next update.

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www.ccna4u.org www.ccna4u.net www.ccna4u.info 42. What is the function of the OSPF LSU packet? used to confirm receipt of certain types of OSPF packets used to establish and maintain adjacency with other OSPF routers used to request more information about any entry in the BDR used to announce new OSPF information and to reply to certain types of requests

XXX

43. Refer to the exhibit. Which route will be removed from the routing table if manual EIGRP summarization is disabled the Serial0/0/0 interface of R3? 0.0.0.0/0 172.16.0.0/16 XXX 172.16.1.0/24 172.16.3.0/30

44. What command would the network administrator apply to a router that is running OSPF to advertise the entire range of addresses included in 172.16.0.0/19 in area 0? R1(config-router)# network 172.16.0.0 0.0.0.255 area 0 XXX R1(config-router)# network 172.16.0.0 0.0.3.255 area 0 R1(config-router)# network 172.16.0.0 0.0.15.255 area 0 R1(config-router)# network 172.16.0.0 0.0.31.255 area 0

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45. Refer to the exhibit. A network engineer has run the show version command on R3. Upon rebooting, R3 does not load the start-up configuration settings. What could be the cause of this problem? There is insufficient NVRAM. There is insufficient flash memory. The configuration register is not configured with the default setting. XXX The system image file is not located in NVRAM.

46. Which two locations can be the source of the Cisco IOS that is used by a router during the bootup process? (Choose two.) flash memory XXX RAM NVRAM XXX TFTP server configuration register

47. Refer to the exhibit. What does the highlighted entry for network 172.30.0.0/16 indicate? Automatic summarization is enabled on R1.

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www.ccna4u.org www.ccna4u.net www.ccna4u.info The routing table of R2 contains only classful networks. R2 will reject this update. The routing protocol that is configured on both routers is RIPv1. XXX 48. Which routing protocol maintains a topology table separate from the routing table? IGRP RIPv1 RIPv2 EIGRP XXX 49. When would the network administrator use the ip bandwidth-percent eigrp as-number percent command? when there is a low bandwidth connection XXX when the connection is on a shared medium when the connection is serial instead of Ethernet when the link is always busy

50. You have been asked to explain converged networks to a trainee. How would you accurately describe a converged network? A network is converged when all routers have formed an adjacency. A network is converged immediately after a topology change has occurred. A network is converged when all routers flush the unreachable networks from their routing tables. A network is converged after all routers share the same information, calculate best paths, and update their routing tables. XXX

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