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6/29/2009

CCNA2 - FINAL EXAM

FINAL 1

  1. Refer to the exhibit. The network administrator issues the command no ip classless on Router1. What forwarding action will take place on a packet that is received by Router1 and is destined for host 192.168.0.26? The packet will be dropped
  2. Which three statements are true of holddown timers? (Choose three.) prevent update messages from reinstating a route that may have gone bad ; allow routers to still forward packets to destination networks that are in holddown ; permit lower metric updates received from any neighboring router to reinstate the route to a possibly down Network
  3. 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 0.0.31.255 area 0
  4. Refer to the exhibit. Hosts on the BOS Fa0/0 LAN are able to ping the Fa0/1 interface on the JAX router and all interfaces on the BOS and ORL routers. Why would hosts from the 10.0.0.0/24 network not be able to ping hosts on the Fa0/0 LAN of the JAX router? The JAX router needs the network 192.168.3.0 0.0.0.255 area 0 command.
  5. 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? It will load balance the traffic between ADC and ABC
  6. 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 ; ip route 172.16.0.0 255.255.0.0 192.168.0.2
  7. What can be determined from the output shown in the exhibit? (Choose two.)Montgomery has Layer 2 connectivity with Cumberland. ; Brant, Fisherman, and Potomac are directly connected to Montgomery.
  8. Refer to the exhibit. R1 knows two routes, Path A and Path B, to the Ethernet network attached to R3. R1 learned Path A to network 10.2.0.0/16 from a static route and Path B to network 10.2.0.0/16 from EIGRP. Which route will R1 install in its routing table? The route via Path A is installed because the static route has the best metric to network 10.2.0.0/16.
  9. Which two statements are true regarding link-state routing protocols? (Choose two.) They are aware of the complete network topology. ; They offer rapid convergence times in large networks.
  10. 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)# default-information originate
  11. Refer to the exhibit. What are the effects of the exhibited commands on the router? Only Telnet sessions are encrypted.
  12. When presented with multiple valid routes to a destination, what criteria does a router use to determine which routes to add to the routing table? The router first selects routes with the lowest administrative distance. The resulting routes are then prioritized by metric and the routes with the best metric are added to the routing table.
  13. Which statement is true regarding routing metrics? Routers compare metrics to determine the best route.
  14. A router has learned about a network through static and dynamic routing processes. Which route will be used to reach network 192.168.168.0? S 192.168.168.0/24 [1/0] via 192.168.200.1
  15. 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. ; The router maintains the same source and destination IP.; The router changes the source physical address to the physical address of the exit interface.
  16. When the show cdp neighbors command is issued from Router C, which devices will be displayed in the output? B, D
  17. Refer to the exhibit. A network administrator is trying to determine why router JAX has no OSPF routes in its routing table. All routers are configured for OSPF area 0. From the JAX router, the administrator is able to ping its connected interfaces and the Fa0/1 interface of the ORL router but no other router interfaces. What is a logical step that the network administrator should take to troubleshoot the problem? Use show and debug commands to determine if hellos are propagating.
  18. Using default settings, what is the next step in the router boot sequence after the IOS loads from flash? Locate and load the startup-config file from NVRAM.
  19. Refer to the exhibit. What summary address can Router2 advertise to Router1 to reach the three networks on Routers 3, 4, and 5 without advertising any public address space or overlapping the networks on Router1? 172.16.0.0/13
  20. The network shown in the diagram is having problems routing traffic. It is suspected that the problem is with the addressing scheme. What is the problem with the addressing used in the topology? The subnetwork configured on the serial link between Router1 and Router2 overlaps with the subnetwork assigned to Ethernet0 of Router3.
  21. Refer to the exhibit. A new PC was deployed in the Sales network. It was given the host address of 192.168.10.31 with a default gateway of 192.168.10.17. • The PC is not communicating with the network properly. What is the cause? The host address and default gateway are swapped.
  22. 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? Router5 will send Router4 a triggered update with a metric of 16 for network 10.0.0.0.
  23. Refer to the exhibit. Which three statements are true of the routing table for Router1? (Choose three.) The AD of EIGRP routes has been manually changed to a value other than the default value. ; Router1 is running both the EIGRP and OSPF routing process. ; No default route has been configured.
  24. Refer to the exhibit. What is the most efficient summarization of the routes attached to router R1? 198.18.48.0/21
  25. What is the purpose of the TTL field within an IP packet header? limits the period of time or number of hops a packet can traverse through the network before it should be discarded
  26. 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 ; Paris(config-router)# network 192.168.7.0 ; Paris(config-router)# network 192.168.8.0
  27. What does RIP use to reduce convergence time in a larger network? It uses triggered updates to announce network changes if they happen in between the periodic updates.
  28. Refer to the exhibit. What two statements are true based on the output shown? (Choose two.) neighbors 192.168.10.9 and 192.168.10.5 have auto summary disabled ; router 3 is load balancing traffic to the 172.16.3.0 network across its serial interfaces
  29. Refer to the exhibit. The network is using the RIPv2 routing protocol. If network 10.0.0.0 goes down, what mechanism will prevent Router1 from advertising false routing information back to Router2? split horizon
  30. What is the function of the OSPF LSU packet? used to announce new OSPF information and to reply to certain types of requests
  31. Refer to the exhibit. The routers in the exhibit are running the EIGRP routing protocol. What statement is true regarding how packets will travel from the 172.16.1.0/16 network to the 192.168.200.0/24 network? The router installs all the equal cost paths in the routing table and performs equal cost load balancing to send packets out multiple exit interfaces.
  32. Refer to the exhibit. A packet enters Router1 with a destination IP of 172.16.28.121. Which routing table entry will be used to forward this packet to the destination address? 172.16.16.0/20 [1/0] via 192.168.0.17
  33. Refer to the exhibit. Routers 1 and 2 are directly connected over a serial link. Pings are failing between the two routers. What change by the administrator will correct the problem? Change the IP address on Serial 0/1/0 on router 2 to 192.168.0.1/30.
  34. Which two router component and operation pair are correctly described? (Choose two.) NVRAM - stores the configuration file ; POST - runs diagnostics on hardware modules
  35. The network administrator configures the router with the ip route 172.16.1.0 255.255.255.0 172.16.2.2 command. How will this route appear in the routing table? S 172.16.1.0 [1/0] via 172.16.2.2
  36. Refer to the exhibit. How many routes are both level 1 and qualify for use as an ultimate route? 2
  37. Refer to the exhibit. All router interfaces are configured with an IP address and are operational. If no routing protocols or static routes are configured, what information will be included in the show ip route command output for router A? The routing table will be empty because routes and dynamic routes have not been configured.
  38. Which three statements about routing protocols are true? (Choose three.)OSPF elects designated routers on multiaccess links. ; EIGRP supports unequal cost load balancing. ; RIP does not advertise a route beyond a hop count of 15.
  39. Refer to the exhibit. What will happen if interface Serial0/0/1 goes down on Router1? DUAL will query neighbors for a route to network 192.168.1.0.
  40. Refer to the exhibit. Which statement is true concerning the routing configuration? Packets routed to the R2 ethernet interface require two routing table lookups.
  41. A network administrator has enabled RIP on routers B and C in the network diagram. Which of the following commands will prevent RIP updates from being sent to Router A? B(config)# router rip - B(config-router)# passive-interface S0/0 - A(config)# no router rip
  42. Which of the following could describe the devices labeled “?” in the graphic? (Choose three.) DCE ; CSU/DSU ; modem
  43. Which of the following are required when adding a network to the OSPF routing process configuration? Choose three.) network address ; wildcard mask ; area ID
  44. The Suffolk router is directly connected to the networks shown in the graphic and has a default route that points to the Richmond router. All interfaces are active and properly addressed. However, when the workstation on network 172.29.5.0/24 sends a packet to destination address 172.29.198.5, it is discarded by the Suffolk router. What can be a reason for this result? The route was ignored if the Richmond router did not include the 172.29.198.0/24 network in its routing updates.
  45. 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. ; The missing information for Blank 2 is the number 120. ; The missing information for Blank 3 is the letter C.
  46. Refer to exhibit. A company network engineer enters the following commands in the routers: R1(config)# ip route 10.1.1.0 255.255.255.0 192.168.0.2 - R2(config)# ip route 10.1.2.0 255.255.255.0 192.168.0.1 . When the engineer enters the show ip route command on R1, the routing table does not display the static route to the 10.1.1.0 network. All R1 and R2 interfaces are correctly addressed per the graphic. What is a logical next step that the engineer could take in order to make the static route display in the routing table in R1? Configure the static route to use an exit interface instead of a next-hop address.
  47. Refer to the exhibit. The network administrator is testing network connectivity by issuing the tracert command from host A to host B. Given the exhibited output on host A, what are two possible routing table issues on the network? (Choose two.) Router2 is missing a route to the 172.16.0.0 network ; Router3 is missing a route to the 10.0.0.0 network
  48. What are two tasks that must be completed before two routers can use OSPF to form a neighbor adjacency?Choose two.) The routers must agree on the network type. ; The routers must use the same dead interval.
  49. Refer to the routing table shown in the exhibit. What is the meaning of the highlighted value 192? It is the metric, which is cost.
  50. Refer to the exhibit. The results of the show ip route command are displayed in the graphic for Router R2. Which route will be selected for a packet with a destination address of 10.1.4.1? 0.0.0.0/0 via 192.168.0.1
  51. Refer to the exhibit. Packets destined to which two networks will require the router to perform a recursive lookup? (Choose two.) 172.16.40.0/24 ; 192.168.2.0/24
  52. Which of the following are primary functions of a router? (Choose two.) packet switching ; path selection
  53. What are three features of CDP? (Choose three.) tests Layer 2 connectivity ; enabled by default on each interface ; provides information on directly connected devices that have CDP enabled
  54. Refer to the exhibit. All routers in the network are running RIPv2 and EIGRP with default routing protocol settings and have interfaces configured with the bandwidths that are shown in the exhibit. Which protocol will be used and how will traffic between the Router1 LAN and Router5 LAN be routed through the network? RIPv2 traffic will use the path Router1, Router2, Router5 because it has the least hops.
  55. Which three statements describe the operation of routing with EIGRP? (Choose three.) As new neighbors are discovered, entries are placed in a neighbor table. ; If hello packets are not received within the hold time, DUAL must recalculate the topology. ; The reported distance is the distance to a destination as advertised by a neighbor.
  56. Which of the following should be considered when troubleshooting a problem with the establishment of neighbor relationships between OSPF routers? (Choose three.)OSPF interval timers mismatch ; interface network type mismatch ; inconsistent authentication configuration
  57. What is the first step OSPF and IS-IS routers take in building a shortest path first database? send hello to discover neighbors and form adjacencies

FINAL 2

  1. Refer to the exhibit. The output of the show ip route command for three routers on a network is displayed. All routers are operational, pings are not blocked on this network, and no default routes are installed. Which two pings will fail? (Choose two.) from R1 to 192.168.3.1; from R3 to 192.168.1.1
  2. A router that uses the RIP routing protocol has an entry for a network in the routing table. It then receives an update with another entry for the same destination network but with a lower hop count. What action will the router take for this new update? It will append the update information to the routing table.
  3. Which two statements are true for OSPF Hello packets? (Choose two.) They are received from all routers on the network and used to determine the complete network topology. ; They are used to maintain neighbor relationships.
  4. A network administrator needs to configure a single router to load-balance the traffic over unequal cost paths. Which routing protocol should the administrator use? RIPv2
  5. Which two statements are correct about the split horizon with poison reverse method of routing loop prevention? (Choose two.) It assigns a value that represents an infinite metric to the poisoned route. ; It sends back the poisoned route update to the same interface from where it was received.
  6. Refer to the exhibit. The show cdp neighbors command was run on one of the devices as shown. Based on this information, which two facts can be determined? (Choose two.) The command was run on the router. ; ABCD is connected to the Fa0/0 interface of the neighboring device.
  7. Refer to the exhibit. The network has three connected routers: R1, R2 and R3. The routes of all three routers are displayed. What can be verified from the output? R2 is connected to the S0/0/1 interface of R3.
  8. Refer to the exhibit. Which three statements are true of the routing table for Router1? (Choose three.) The AD of EIGRP routes has been manually changed to a value other than the default value. ; Router1 is running both the EIGRP and OSPF routing process. ; No default route has been configured.
  9. Refer to the exhibit. All the routers are properly configured to use the RIP routing protocol with default settings, and the network is fully converged. Router A is forwarding data to router E. Which statement is true about the routing path? Router A will determine that all paths have equal metric cost.
  10. Refer to the exhibit. The network administrator has run the following command on R1. R1# ip route 192.168.2.0 255.255.255.0 172.16.1.2What is the result of running this command? Traffic for network 192.168.2.0 is forwarded to 172.16.1.2.
  11. Refer to the exhibit. The network administrator is planning IP addressing of a new network. What part of this addressing scheme must be changed to allow communication between host A and the server? the IP address of the server
  12. 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? Serial 0/0/0
  13. Refer to the exhibit. All routers are configured to run RIPv1 and are fully converged. Which routing updates will be received by R3? updates for 172.16.1.0/24, 172.16.2.0/24 and 172.16.3.0/24
  14. Refer to the exhibit. Both routers are using the RIP protocol. Devices on the 192.168.1.1 network can ping the S0/0/0 interface on R2 but cannot ping devices on the 192.168.2.1 network. What is a possible cause of this problem? The routers are configured with different versions of RIP.
  15. When a router boots, what is the default order to locate the Cisco IOS if there is no boot system command? flash, NVRAM, TFTP server
  16. Refer to the exhibit. Which router is advertising subnet 172.16.1.32/28? Router4
  17. Which mechanism helps to avoid routing loops by advertising a metric of infinity? route poisoning
  18. Refer to the exhibit. What is the meaning of the highlighted value 120? It is the administrative distance of the routing protocol.
  19. Refer to the exhibit. A network administrator successfully pings R1 from R3. Next, the administrator runs the show cdp neighbors command on R3. The output of this command is displayed.What are two reasons for the absence of R1 in the output? (Choose two.) There is a Layer 2 connectivity problem between R1 and R3. ; The no cdp run command has been run at R1.
  20. 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 ; a modem
  21. 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 [120/1] via 192.168.100.1, 00:00:17, Serial 0/0/1
  22. Refer to the exhibit. A network administrator accesses router R1 from the console port to configure a newly connected interface. What passwords will the network administrator need to enter to make the connection and the necessary configuration changes? the Cisco001 password and the Cisco789 passwords
  23. 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? A static route is established.
  24. Refer to the exhibit. The router receives a packet that is destined for 192.168.5.79. How will the router handle this packet? It will drop the packet.
  25. Which two statements are true about classless routing protocols? (Choose two.) They can be used for discontiguous subnets. ; They can forward supernet routes in routing updates.
  26. Refer to the exhibit. How many routes are child routes? 4
  27. A router has EIGRP configured as the only routing protocol. In what two ways does EIGRP respond if there is no feasible successor route to a destination network and the successor route fails? (Choose two.) It sends queries to adjacent neighbors until a new successor route is found. ; It automatically forwards traffic to a fallback default route until a successor route is found.
  28. Refer to the exhibit. Packets destined to which two networks will require the router to perform a recursive lookup? (Choose two.) 10.0.0.0/8 ; 192.168.2.0/24
  29. Refer to the exhibit. Which two statements are true based on the exhibited output? (Choose two.) All routes are stable. ; The show ip eigrp topology command has been run on R1.
  30. Refer to the exhibit. All routers are properly configured with default configurations and are running the OSPF routing protocol. The network is fully converged. A host on the 192.168.3.0/24 network is communicating with a host on the 192.168.2.0/24 network. Which path will be used to transmit the data? The data will be transmitted via R3-R1-R2.
  31. A network administrator has enabled RIP on routers B and C in the network diagram. Which of the following commands will prevent RIP updates from being sent to Router A? B(config)# router rip - B(config-router)# passive-interface S0/0
  32. Refer to the exhibit. The hosts on the R1 LAN are unable to access the Internet. What is incorrectly configured? the IP address of the S 0/0/0 interface at R
  33. Refer to the exhibit. A ping from R1 to 10.1.1.2 is successful, but a ping from R1 to 192.168.2.0 fails. What is the cause of this problem? A default route is not configured on R1.
  34. Refer to the exhibit. The network administrator has run the show ip protocol command on R1. What can be determined from the exhibited output? The FastEthernet0/0 interface is down.
  35. Refer to the exhibit. All routers are configured to use the EIGRP routing protocol with default settings, all routes are advertised on all routers, and the network is fully converged. Which path will the data take to travel between 172.16.1.0/24 and 192.168.100.0/24? It will travel via A, F, E, D, and C.
  36. 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 priority values of the Fa0/0 interfaces of R1 and R3 to 0. ; Configure a loopback interface on R2, with an IP address higher than any IPaddress on the other routers.
  37. Refer to the exhibit. Host A is unable to access the Internet, and troubleshooting has revealed that this is due to an addressing problem. What is incorrectly configured in this network? the IP address of the S 0/0/0 interface of R1
  38. Refer to the exhibit. All routes are advertised and fully operational on all routers. Which statement is true about the path that the data will take from router A to router B? If EIGRP is used with default configurations, the data will be equally distributed between two paths — A, D, B and A, C, D.
  39. Refer to the exhibit. The interfaces of all routers are configured for OSPF area 0. R3 can ping R1, but the two routers are unable to establish a neighbor adjacency. What should the network administrator do to troubleshoot this problem? Check the hello and dead intervals between the routers.
  40. Refer to the exhibit. What information can be determined from the highlighted output? Automatic summarization is disabled.
  41. Which two router component and operation pair are correctly described? (Choose two.) NVRAM -stores the configuration file ; POST -runs diagnostics on hardware modules
  42. Which routing protocol by default uses bandwidth and delay to calculate the metric of a route? EIGRP
  43. Two routers need to be configured within a single OSPF area. Which two components need to be configured on both routers to achieve this? (Choose two.) the same area ID ; network addresses and wildcard masks
  44. Refer to the exhibit. The networks that are connected to R1 have been summarized for R2 as 192.168.136.0/21. Which packet destination address will R2 forward to R1? 192.168.142.1
  45. Refer to the exhibit. R1 is running RIP with default parameters. R1 has learned four different paths with the same metrics to network 192.168.6.0. Which path or paths will R1 use to forward a packet that is destined to 192.168.6.10? the first path that the router learned.
  46. What are two functions of a router? (Choose two.) It connects multiple IP networks. ; It determines the best path to send packets.
  47. Refer to the exhibit. Which statement is true about the routing process for this network? A packet leaves interface Fa0/0 of R1 with the source MAC address as 000C.3010.9260.
  48. 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? Issue the no shutdown command on the interface.
  49. Refer to the exhibit. R1 is configured properly for a single area OSPF, and R2 has been recently installed in the network. Which set of commands is required to configure a single area OSPF for the networks that are connected to R2? R2(config)# router ospf 1 - R2(config-router)# network 192.168.2.0 0.0.0.255 area 0 - R2(config-router)# network 10.1.1.0 0.0.0.3 area 0
  50. Refer to the exhibit. The command ip route 0.0.0.0 0.0.0.0 S0/0/0 is run on router R2. What are the two results of this command? (Choose two.) A static route will be updated in the routing table. ; The route will be specified as the default route for all networks not defined in the routing table.
  51. 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. ; The router maintains the same source and destination IP. ; The router changes the source physical address to the physical address of the exit interface.
  52. What are two tasks that must be completed before two routers can use OSPF to form a neighbor adjacency? (Choose two.) The routers must agree on the network type. ; The routers must use the same dead interval.
  53. Refer to the exhibit. Although both the routers can ping the serial interface of their neighbors, they are unable to ping the Ethernet interfaces of other routers. Which two statements are true for this network? (Choose two.) R1 is learning about network 192.168.2.0. ; Autosummarization is enabled on both routers.
  54. Which two situations require the use of a link-state protocol? (Choose two.) Fast convergence of the network is critical. ; The network is very large.
  55. Refer to the exhibit. What information can be determined from the displayed output? Router R2 is receiving hello packets from a neighbor with the IP address 192.168.10.10 via the R2 S0/0/1 interface.
  56. Refer to the exhibit. PC1 is unable to access the Internet. What is the cause of the problem? A routing loop has occurred.
  57. Refer to the exhibit. What summarization should R2 use to advertise its LAN networks to R1? 172.16.4.0/22


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