CCNA 3 Chapter 2 v5.0 Exam Answers 2015 (100%)

CCNA 3 Chapter 2 v5.0 Exam Answers 2015 (100%) PDF Download

  1. Which two network design features require Spanning Tree Protocol (STP) to ensure correct network operation? (Choose two.)

    • static default routes
    • implementing VLANs to contain broadcasts
    • redundant links between Layer 2 switches
    • link-state dynamic routing that provides redundant routes
    • removing single points of failure with multiple Layer 2 switches
  2. What is a characteristic of a Layer 2 loop?

    • Broadcast frames are forwarded back to the sending switch.
    • The Time-to-Live attribute of a frame is set to infinity.
    • Routers continually forward packets to other routers.
    • A switch is continually forwarding the same unicast frame.
  3. What is the outcome of a Layer 2 broadcast storm?

    • Routers will take over the forwarding of frames as switches become congested.
    • New traffic is discarded by the switch because it is unable to be processed.
    • CSMA/CD will cause each host to continue transmitting frames.
    • ARP broadcast requests are returned to the transmitting host.
  4. What additional information is contained in the 12-bit extended system ID of a BPDU?

    • MAC address
    • VLAN ID
    • IP address
    • port ID
  5. Which three components are combined to form a bridge ID?

    • port ID
    • IP address
    • extended system ID
    • MAC address
    • bridge priority
    • cost
  6. Which STP priority configuration would ensure that a switch would always be the root switch?

    • spanning-tree vlan 10 priority 0
    • spanning-tree vlan 10 priority 61440
    • spanning-tree vlan 10 root primary
    • spanning-tree vlan 10 priority 4096
  7. Which protocol provides up to 16 instances of RSTP, combines many VLANs with the same physical and logical topology into a common RSTP instance, and provides support for PortFast, BPDU guard, BPDU filter, root guard, and loop guard?

    • STP
    • Rapid PVST+
    • PVST+
    • MST
  8. Which two types of spanning tree protocols can cause suboptimal traffic flows because they assume only one spanning-tree instance for the entire bridged network? (Choose two.)

    • STP
    • Rapid PVST+
    • PVST+
    • MSTP
    • RSTP
  9. What is an advantage of PVST+?

    • PVST+ requires fewer CPU cycles for all the switches in the network.
    • PVST+ reduces bandwidth consumption compared to traditional implementations of STP that use CST.
    • PVST+ optimizes performance on the network through autoselection of the root bridge.
    • PVST+ optimizes performance on the network through load sharing.
  10. In which two port states does a switch learn MAC addresses and process BPDUs in a PVST network? (Choose two.)

    • blocking
    • disabled
    • forwarding
    • learning
    • listening
  11. If no bridge priority is configured in PVST, which criteria is considered when electing the root bridge?

    • lowest IP address
    • lowest MAC address
    • highest IP address
    • highest MAC address
  12. Which RSTP ports are connected to end devices?

    • trunk ports
    • designated ports
    • root ports
    • edge ports
    • Link types are determined automatically.
    • Link types must be configured with specific port configuration commands.
    • Link types can only be determined if PortFast has been configured.
    • Link types can only be configured on access ports configured with a single VLAN.
  13. Which port state will switch ports immediately transition to when configured for PortFast?

    • listening
    • learning
    • forwarding
    • blocking
  14. To obtain an overview of the spanning tree status of a switched network, a network engineer issues the show spanning-tree command on a switch. Which two items of information will this command display? (Choose two.)

    • The root bridge BID.
    • The role of the ports in all VLANs.
    • The status of native VLAN ports.
    • The number of broadcasts received on each root port.
    • The IP address of the management VLAN interface.
  15. What is the purpose of HSRP?

    • It provides a continuous network connection when a router fails.
    • It prevents a rogue switch from becoming the STP root.
    • It enables an access port to immediately transition to the forwarding state.
    • It prevents malicious hosts from connecting to trunk ports.
  16. Which nonproprietary protocol provides router redundancy for a group of routers which support IPv4 LANs?

    • HSRP
    • VRRPv2
    • GLBP
    • SLB
  17. Refer to the exhibit. Which protocol information is being displayed in the output?CCNA3_Ch3_01

    • FHRP
    • GLBP
    • HSRP
    • VRRP
  18. Refer to the exhibit. A network engineer is troubleshooting host connectivity on a LAN that uses a first hop redundancy protocol. Which IPv4 gateway address should be configured on the host?CCNA3_Ch3_02

  19. Fill in the blank. Do not use abbreviations.
    The spanning-tree mode rapid-pvst global configuration command is used to enable Rapid PVST+.

  20. Fill in the blank.

    In FHRP operation, two or more routers are represented as a single virtual router.

  21. Match the step number to the sequence of stages that occur during the HSRP failover process. (Not all options are used.)CCNA3_Ch2_001

  22. Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.

    Which switch is the root bridge?

    • Switch_1
    • Switch_2
    • Switch_3
    • Switch_4
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