CCNA 2 Final

  1. 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.
  2. Which of the following are primary functions of a
    router? (Choose two.)
    • - packet switching
    • - path selection
  3. Refer to the exhibit. Which statement is true
    concerning the routing configuration?
    - Packets routed to the R2 ethernet interface require two routing table lookups.
  4. 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
    - via
  5. Refer to the exhibit. Packets destined to which two
    networks will require the router to perform a recursive lookup? (Choose two.)
    • -
    • -
  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 network. Assuming Router2 is configured correctly,
    which two static routes could be configured on Router1 to enable Host A to
    reach network (Choose two.)
    • - ip route S0/0
    • - ip route
  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. Which path will traffic from
    the network take to get to the network?
    - It will load balance the traffic between ADC and ABC
  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. 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
  11. A router has learned about a network through static
    and dynamic routing processes. Which route will be used to reach network
    - S [1/0] via
  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. 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.
  14. 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
  15. Refer to the exhibit. The network is using the
    RIPv2 routing protocol. If network goes down, what mechanism will
    prevent Router1 from advertising false routing information back to Router2?
    - split horizon
  16. Refer to the exhibit. The network is running the
    RIP routing protocol. Network 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
  17. 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
  18. 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
  19. Which statement is true regarding routing metrics?
    - Routers compare metrics to determine the best route
  20. 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
  21. Refer to the
    exhibit. What is the most efficient summarization of the routes attached to
    router R1?
  22. 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
  23. Refer to the
    exhibit. How many routes are both level 1 and qualify for use as an ultimate
  24. 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
    sends a packet to destination address, it is discarded by the
    Suffolk router. What can be a reason for this result?
    - The ip classless command is not enabled on the Suffolk router
  25. 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
  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

    - Paris(config-router)# network
  27. Refer to the
    exhibit. What two statements are true based on the output shown? (Choose two.)
    - neighbors and have auto summary disabled

    - router 3 is load balancing traffic to the network across its serial interfaces
  28. Refer to the
    exhibit. A new PC was deployed in the Sales network. It was given the host
    address of with a default gateway of The PC is not
    communicating with the network properly. What is the cause?
    - is the broadcast address for this subnet
  29. Refer to the
    exhibit. Which three statements are true of the routing table for Router1? (Choose
    • - 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.
  30. Which of the
    following could describe the devices labeled "?" in
    the graphic? (Choose three.)
    - DCE

    - CSU/DSU

    - modem
  31. 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
  32. Refer to the
    exhibit. What are the effects of the exhibited commands on the router?
    - Only the enable password is encrypted
  33. When the show
    cdp neighbors command is issued from Router C, which devices will be
    displayed in the output?
    - B, D
  34. Refer to exhibit. A company network engineer enters
    the following commands in the routers: - R1(config)# ip route R2(config)# ip route When the engineer enters the show ip route command on R1, the routing table does not display the static route to the 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?
    -Enable the R1 and R2 serial interfaces
  35. Which two router
    component and operation pair are correctly described? (Choose two.)
    • - NVRAM -
    • stores the configuration file

    • - POST -
    • runs diagnostics on hardware modules
  36. 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
  37. 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 from a static route
    and Path B to network from EIGRP. Which route will R1 install in
    its routing table?
    - The route via Path A is installed because the static route has the lowest administrative distance to network
  38. What command would
    the network administrator apply to a router that is running OSPF to advertise
    the entire range of addresses included in in area 0?
    - R1(config-router)# network area 0
  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
  40. What is the
    function of the OSPF LSU packet?
    - used to announce new OSPF information and to reply to certain types of requests
  41. 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 network not be able to ping hosts on the Fa0/0 LAN of the JAX
    • - The JAX
    • router needs the network area 0 command.
  42. 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
  43. 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
  44. 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
  45. Which of the
    following are required when adding a network to the OSPF routing process
    configuration? (Choose three.)
    • - network
    • address

    • - wildcard
    • mask

    - area ID
  46. 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
  47. 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
    network to the 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
  48. What is the first
    step OSPF and IS-IS routers take in building a shortest path first database?
    - learn about directly connected networks
  49. 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
  50. 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
    - The packet will be dropped.
  51. The network
    administrator configures the router with the ip route command. How will this route appear in the
    routing table?
    - S [1/0] via
  52. 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 network

    - Router3 is missing a route to the network
  53. 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?
    - EIGRP traffic will use the path Router1, Router3, Router4, Router5 because it has the best metric
  54. 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?
    - Routes to networks,, and will be in the routing table.
  55. 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?
Card Set
CCNA 2 Final