CCNA 4 Routing & Switching Essentials Ver 6.0 – ITN Chapter 8 Exam Answers

CCNA 4 Routing & Switching Essentials Ver 6.0 – ITN Chapter 8 Exam Answers
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  1. A team of engineers has identified a solution to a significant network problem. The proposed solution is likely to affect critical network infrastructure components. What should the team follow while implementing the solution to avoid interfering with other processes and infrastructure?

    syslog messages and reports
    one of the layered troubleshooting approaches
    knowledge base guidelines
    change-control procedures*

  2. Refer to the exhibit. What action occurs at stage 3 of the general troubleshooting process?


    Document symptoms.
    Question end users.
    Narrow the scope.
    Correct the problem.*

  3. After which step in the network troubleshooting process would one of the layered troubleshooting methods be used?

    documenting symptoms
    determining ownership
    narrowing the scope
    gathering symptoms from suspect devices*

  4. A network technician is troubleshooting an email connection problem. Which question to the end-user will provide clear information to better define the problem?

    How big are the emails you tried to send?
    What kind of equipment are you using to send emails?
    Is your email working now?
    When did you first notice your email problem?*

  5. A network engineer is troubleshooting a network problem and can successfully ping between two devices. However, Telnet between the same two devices does not work. Which OSI layers should the administrator investigate next?

    from the network layer to the physical layer
    all of the layers
    only the network layer
    from the network layer to the application layer*

  6. A network administrator is having issues with a newly installed network not appearing in other routers. At which layer of the OSI model is the network administrator going to start the troubleshooting process when using a top-down approach?

    internet
    application
    network*
    session
    transport

  7. Which troubleshooting method begins by examining cable connections and wiring issues?

    top-down
    divide-and-conquer
    substitution
    bottom-up*

  8. When should a network performance baseline be measured?

    after normal work hours to reduce possible interruptions
    during normal work hours of an organization*
    when a denial of service attack to the network is detected and blocked
    immediately after the main network devices restarted

  9. What is a purpose of establishing a network baseline?

    It provides a statistical average for network performance.
    It creates a point of reference for future network evaluations.*
    It manages the performance of network devices.
    It checks the security configuration of network devices.

  10. Which three pieces of information are typically recorded in a logical topology diagram?

    (Choose three.)

    device models and manufacturers
    device locations
    cable specifications
    static routes*
    routing protocols*
    IP address and prefix lengths*

  11. In which step of gathering symptoms does the network engineer determine if the problem is at the core, distribution, or access layer of the network?

    Determine the symptoms.
    Narrow the scope.*
    Determine ownership.
    Gather information.
    Document the symptoms.

  12. Refer to the exhibit. On the basis of the information presented, which two IP SLA related statements are true? (Choose two.)

    IP SLA 99 will run forever unless explicitly disabled.*
    IP SLA 99 is measuring jitter.
    IP SLA 99 is configured with the type dns target-addr 192.168.2.1 command.
    IP SLA 99 is sending echo requests from IP address 192.168.2.1.
    IP SLA 99 is scheduled to begin in 2 hours.
    IP SLA 99 is sending echo requests every 10 seconds.*

  13. A company is setting up a web site with SSL technology to protect the authentication credentials required to access the web site. A network engineer needs to verify that the setup is correct and that the authentication is indeed encrypted. Which tool should be used?

    baselining tool
    cable analyzer
    protocol analyzer*
    fault-management tool

  14. Which category of software troubleshooting tools provides device-level monitoring, configuration, and fault-management?

    host-based protocol analyzers
    baselining tools
    knowledge bases
    network management system tools*

  15. Which two specialized troubleshooting tools can monitor the amount of traffic that passes through a switch? (Choose two.)

    DTX cable analyzer
    TDR
    digital multimeter
    portable network analyzer*
    NAM*

  16. Which number represents the most severe level of syslog logging?

    0*
    1
    6
    7

  17. A user in a large office calls technical support to complain that a PC has suddenly lost connectivity to the network. The technician asks the caller to talk to nearby users to see if other machines are affected. The caller reports that several immediate neighbors in the same department have a similar problem and that they cannot ping each other. Those who are seated in other departments have connectivity. What should the technician check as the first step in troubleshooting the issue?

    the power outlet to the PC that is used by the caller
    the cable connection between a PC and a network outlet that is used by a neighbor
    the cable that connects the PC of the caller to the network jack
    the status of the departmental workgroup switch in the wiring closet*
    the trunks between switches in the wiring closet

  18. A user reports that after an OS patch of the networking subsystem has been applied to a workstation, it performs very slowly when connecting to network resources. A network technician tests the link with a cable analyzer and notices that the workstation sends an excessive number of frames smaller than 64 bytes and also other meaningless frames. What is the possible cause of the problem?

    corrupted application installation
    cabling faults
    corrupted NIC driver*
    Ethernet signal attenuation

  19. An administrator is troubleshooting an Internet connectivity problem on a router. The output of the show interfaces gigabitethernet 0/0 command reveals higher than normal framing errors on the interface that connects to the Internet. At what layer of the OSI model is the problem likely occurring?

    Layer 1
    Layer 2*
    Layer 3
    Layer 4
    Layer 7

  20. A group of Windows PCs in a new subnet has been added to an Ethernet network. When testing the connectivity, a technician finds that these PCs can access local network resources but not the Internet resources. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configurations on the PCs, and also verify connectivity to the local router. Which three Windows CLI commands and utilities will provide the necessary information?

    (Choose three.)

    ping*
    arp -a
    netsh interface ipv6 show neighbor
    nslookup*
    tracert
    ipconfig*
    telnet

  21. Users report that the new web site http://www.company1.biz cannot be accessed. The helpdesk technician checks and verifies that the web site can be accessed with http://www.company1.biz:90. Which layer in the TCP/IP model is involved in troubleshooting this issue?

    transport*
    application
    network access
    internet

  22. A networked PC is having trouble accessing the Internet, but can print to a local printer and ping other computers in the area. Other computers on the same network are not having any issues. What is the problem?

    The PC has a missing or incorrect default gateway.*
    The link between the switch to which the PC connects and the default gateway router is down.
    The switch port to which the PC connects has an incorrect VLAN configured.
    The default gateway router does not have a default route.

  23. The newly configured ASBR that connects a company to the Internet has a default route configured and has the default-information originate command entered. Devices connected through this router can access the Internet. The problem is that no other OSPF routers have a default route in the routing table and no other users throughout the organization can access the Internet. What could be the problem?

    The ASBR should use the exit_interface argument instead of next-hop on the default route.
    The ASBR does not have OSPF configured.
    The ASBR does not have an OSPF neighbor.*
    The other routers are not configured to accept LSA type 4s.

  24. An internal corporate server can be accessed by internal PCs, but not by external Internet users that should have access. What could be the issue?

    The default gateway router for the server does not have a default route.
    The switch port to which the server connects has an incorrect VLAN configured.
    The server does not have a private IP address assigned.
    Static NAT has not been configured properly or at all.*

  25. Fill in the blank.

    Use the
    cache to verify IPv4 address to Layer 2 Ethernet address mappings on a host computer.
    Correct Answer: ARP

  26. Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
    A user reports that PC0 cannot visit the web server www.server.com. Troubleshoot the network configuration to identify the problem.
    What is the cause of the problem?

    The clock rate on Branch S0/0/0 is configured incorrectly.
    A serial interface encapsulation is configured incorrectly.*
    The DNS server address on PC0 is configured incorrectly.
    A default route on HQ is not configured.

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