CCNA 3 - Chapter 2 version 5.03 Exam Answers

1. What could be the effect of duplicate unicast frames arriving at a destination device due to multiple active alternative physical paths?

   • Frame collisions increase.
   • The number of broadcast domains increases.
   • Application protocols malfunction.
   • The number of collision domains increases.

2. What additional information is contained in the 12-bit extended system ID of a BPDU?

   • MAC address
   • VLAN ID
   • IP address
   • port ID

3. Which three components are combined to form a bridge ID?

   • port ID
   • IP address
   • extended system ID
   • MAC address
   • bridge priority
   • cost

4. Refer to the exhibit. Which trunk link will not forward any traffic after the root bridge election process is complete?

   
   
   • Trunk1
   • Trunk2
   • Trunk3
   • Trunk4

5. Which STP port role is adopted by a switch port if there is no other port with a lower cost to the root bridge?

   • designated port
   • root port
   • alternate
   • disabled port

6. Which is the default STP operation mode on Cisco Catalyst switches?

   • RSTP
   • PVST+
   • MST
   • MSTP
   • Rapid PVST+

7. 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.

8. 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

9. 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

10. 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.

11. 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

12. Which nonproprietary protocol provides router redundancy for a group of routers which support IPv4 LANs?

    • HSRP
    • VRRPv2
    • GLBP
    • SLB

13. Refer to the exhibit. Which protocol information is being displayed in the output?

    
    
    • FHRP
    • GLBP
    • HSRP
    • VRRP

14. 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?

    
    

    
    
    • 192.168.2.0
    • 192.168.2.1
    • 192.168.2.2
    • 192.168.2.100

15. What value determines the root bridge when all switches connected by trunk links have default STP configurations?

    • VLAN ID
    • MAC address
    • extended system ID
    • bridge priority

16. Which two concepts relate to a switch port that is intended to have only end devices attached and intended never to be used to connect to another switch? (Choose two.)

    • bridge ID
    • edge port
    • extended system ID
    • PortFast
    • PVST+

17. Which Cisco switch feature ensures that configured switch edge ports do not cause Layer 2 loops if a port is mistakenly connected to another switch?

    • BPDU guard
    • extended system ID
    • PortFast
    • PVST+

18. Refer to the exhibit. A network administrator configured routers R1 and R2 as part of HSRP group 1. After the routers have been reloaded, a user on Host1 complained of lack of connectivity to the Internet The network administrator issued the show standby brief command on both routers to verify the HSRP operations. In addition, the administrator observed the ARP table on Host1. Which entry should be seen in the ARP table on Host1 in order to gain connectivity to the Internet?

    
    

    CCNA3 Chapter 2 v5.03 003
    • the IP address and the MAC address of R1
    • the virtual IP address and the virtual MAC address for the HSRP group 1
    • the virtual IP address of the HSRP group 1 and the MAC address of R1
    • the virtual IP address of the HSRP group 1 and the MAC address of R2

19. Fill in the blank. Do not abbreviate.
    To enable Rapid PVST+ on a Cisco switch, the spanning-tree mode   rapid-pvst   global configuration mode command is required

20. Fill in the blank. Use a number.
    The default hello timer value for STP BPDU frames is  2  seconds.

21. Fill in the blank.

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

22. Match the spanning-tree feature with the protocol type. (Not all options are used.)

    • Question
      
      
    • Answer
      
      

23. Match the step number to the sequence of stages that occur during the HSRP failover process.

    • Question
      
      
    • Answer
      
      

24. 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