Home > Articles > Certification > Cisco Certification > CCNA

This chapter is from the book

Review Questions

Use the questions here to review what you learned in this chapter. The correct answers are located in Appendix A, “Answers to Chapter Review Questions.”

  1. In which two ways does the configuration of EIGRP on IPv6 differ from the configuration of EIGRP on IPv4? (Choose two.) (Source: “EIGRP for IPv6 Command Syntax”)

    1. The network command is changed into the ipv6 network command for EIGRP for IPv6.
    2. EIGRP for IPv6 can only be explicitly enabled with the no shutdown command. There is no network command.
    3. EIGRP for IPv6 is configured per interface on Cisco routers.
    4. If you run EIGRP for IPv6, you have to run EIGRP for IPv4; but if you run EIGRP for IPv4, you do not need to run EIGRP for IPv6.
  2. Which command can you use to show if EIGRP for IPv6 is running? (Source: “EIGRP for IPv6 Command Syntax”)

    1. show ipv6 interface
    2. show ipv6 protocol
    3. show ipv6 eigrp dual
    4. show eigrp ipv6 dual
  3. Which is not a valid IPv6 EIGRP command? (Source: EIGRP Basic Configuration)

    1. show ipv6 eigrp topology
    2. show ipv6 route eigrp
    3. show ipv6 eigrp status
    4. show ipv6 eigrp interfaces
  4. Which of the following applies to EIGRP AS numbers? (Source: “Troubleshooting EIGRP Neighbor Issues”)

    1. Need to match between EIGRP neighbors only
    2. Need to match OSPF area numbers if routes are being redistributed
    3. Need to match between all EIGRP routers in the topology
    4. Don’t need to match at all
    5. Must match BGP AS numbers
  5. Which command is most useful for determining if an EIGRP neighbor relationship is not established due to a connectivity issue? (Source: “Troubleshooting EIGRP Neighbor Issues”)

    1. show ip protocols
    2. show ip eigrp neighbors
    3. show eigrp topology
    4. show ip protocols
    5. show ip interfaces brief
  6. Which of the following applies to an EIGRP passive interface? (Source: “Troubleshooting EIGRP Neighbor Issues”)

    1. Only makes a neighbor relationship if a neighbor that is on a directly connected subnet initiates the connection
    2. Can be seen by the show ip eigrp passive-interfaces command
    3. Can be seen by the show ip protocols command
    4. Can have a different AS number assigned to it
  7. Route filtering can be done on which of the following? (Source: “Issues Caused by Route Filtering”)

    1. Inbound routes only
    2. Outbound routes only
    3. Either inbound or outbound routes
  8. Where is automatic summarization performed? (Source: Classful Routing Versus Classless Routing)

    1. At any contiguous network block
    2. At classful network boundaries
    3. Can be performed on the same classful boundary on more than one network segment at the same time
    4. At the intersection of the classful and classless routing protocol.
  9. Which command correctly specifies that network is directly connected to a router that is running EIGRP and should be advertised? (Source: “Implementing EIGRP for IPv6”)

    1. Router(config)# network
    2. Router(config)# router eigrp
    3. Router(config-router)# network
    4. Router(config-router)# router eigrp
  10. Connect each EIGRP feature on the left with its description on the right. (Source: “Implementing EIGRP for IPv6”)


    Reduced bandwidth usage


    EIGRP algorithm by which EIGRP achieves rapid convergence


    Classless routing


    A direct consequence of using partial updates


    Load balancing


    EIGRP knows two types: equal and unequal




    Routing mask is advertised for each destination network

  11. Which two criteria does EIGRP use by default to calculate its metric? (Choose two.) (Source: “Implementing EIGRP for IPv6”)

    1. Bandwidth
    2. Reliability
    3. Load
    4. MTU
    5. Delay
  12. Connect each term on the left to its description on the right. (Source: “Implementing EIGRP for IPv6”)


    Feasible distance


    The best EIGRP metric for an EIGRP neighbor to reach a particular network


    Advertised distance


    The end-to-end metric that is transmitted from the router for a remote network


    Administrative distance


    The end-to-end EIGRP metric from a router to reach a particular network


    Composite metric


    Used to rate the trustworthiness of each routing information source

  13. Which letter is used to signify that a route in the show ip routes command originates from EIGRP? (Source: “Verification of EIGRP Configuration and Operation”)

    1. A
    2. D
    3. E
    4. L
  14. Which is not a valid command? (Source: “Verification of EIGRP Configuration and Operation”)

    1. show ip eigrp dual process as_number
    2. show ip eigrp interfaces
    3. show ip route
    4. show ip eigrp neighbors
  15. All routing protocols support uneven-cost load balancing. True or False? (Source: “Load Balancing with EIGRP”)
  16. Which interface(s) on the Branch router does not have an EIGRP neighbor? (Source: “Verification of EIGRP Configuration and Operation”)

    1. Gigabit0/0
    2. Gigabit0/1
    3. Gigabit0/2
    4. Gigabit0/3
    5. All interfaces have an EIGRP neighbor
    6. No interfaces have an EIGRP neighbor

  17. Which two choices are not a characteristic of EIGRP? (Source: “Dynamic Routing Overview”)

    1. Determines distance to any destination in the network
    2. Uses an algorithm called DUAL
    3. Uses an algorithm called SPF
    4. Has a map of every destination in the network
  18. Which command would you use to investigate which interfaces are enabled for the EIGRP routing process? (Source: “Troubleshooting EIGRP Neighbor Issues”)

    1. show ip eigrp interfaces
    2. show ip eigrp neighbors
    3. show ip interfaces brief
    4. show eigrp enabled interfaces
  19. Which of the following statements are false? (Source: “Troubleshooting EIGRP for IPv6”)

    1. In per-interface configuration at system startup, if IPv6 EIGRP has been configured on an interface, then the IPv6 EIGRP protocol may start running before any EIGRP router mode commands have been executed.
    2. An EIGRP for IPv6 protocol instance does not need a router ID before it can start running. The router ID can be added later.
    3. When using a passive-interface configuration, EIGRP for IPv6 does not need to be configured on the interface that is made passive.
    4. EIGRP for IPv6 is not directly configured on the interfaces over which it runs. In the network statement in EIGRP for IPv6, the interface must be explicitly defined.
    5. EIGRP for IPv6 has a shutdown feature. The routing process must be in no shutdown mode in order to start running.
    6. EIGRP for IPv6 provides route filtering using the distribute-list prefix-list command. Use of the route-map command is not supported for route filtering with a distribute list.
    7. EIGRP uses the advanced DUAL algorithm that maintains a database of every node on the network.
  20. Which is not a basic component of EIGRP? (Source: “EIGRP Features and Function”)

    1. Topology database
    2. DUAL algorithm
    3. Protocol-dependent modules
    4. Hello packets
  21. Which is not a valid dynamic routing protocol classification? (Source: “Dynamic Routing Protocols”)

    1. Hybrid
    2. Distance vector
    3. Link state
  22. Connect each term on the left with its definition on the right. (Source: “Dynamic Routing Review”)


    Distance vector protocol


    Keeps track of all links and routers in the network




    Internal routing for a single routing domain


    Link-state protocol


    Tracks the network path on a hop-by-hop basis




    Connects routing domains

InformIT Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from InformIT and its family of brands. I can unsubscribe at any time.


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information

To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.


Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites, develop new products and services, conduct educational research and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.


If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@informit.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information

Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.


This site is not directed to children under the age of 13.


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information

If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.


Users can always make an informed choice as to whether they should proceed with certain services offered by InformIT. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.informit.com/u.aspx.

Sale of Personal Information

Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents

California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure

Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact

Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice

We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020