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Cisco Networking Academy Connecting Networks Companion Guide: Connecting to the WAN

  • Sample Chapter is provided courtesy of Cisco Press.
  • Date: May 7, 2014.

Contents

  1. Objectives
  2. Key Terms
  3. Introduction (2.0.1.1)
  4. WAN Technologies Overview (2.1)
  5. WAN Operations (2.1.2)
  6. Selecting a WAN Technology (2.2)
  7. Private WAN Infrastructures (2.2.2)
  8. Public WAN Infrastructure (2.2.3)
  9. Selecting WAN Services (2.2.4)
  10. Summary (2.3)
  11. Practice
  12. Check Your Understanding Questions

Chapter Description

Different technologies are used for WANs than for LANs. This chapter introduces WAN standards, technologies, and purposes. It covers selecting the appropriate WAN technologies, services, and devices to meet the changing business requirements of an evolving enterprise.

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Check Your Understanding Questions

Complete all the review questions listed here to test your understanding of the topics and concepts in this chapter. The appendix, “Answers to the ‘Check Your Understanding’ Questions,” lists the answers.

  1. A broadband service such as DSL available through a local Internet service provider is suitable for what type of organization?

    1. A small company with 10 employees that uses a single LAN to share information
    2. A medium-size company with 500 employees that uses multiple LANs to share information
    3. A large company with 2,000 employees, in multiple locations and in a multi-LAN environment.

  2. Which device is a data terminal equipment?

    1. Cable modem
    2. CSU/DSU
    3. Dialup modem
    4. DSL modem
    5. Router

  3. Which two devices are used when digital leased lines interconnect a client with a provider? (Choose two.)

    1. Access server
    2. Channel service unit (CSU)
    3. Data service unit (DSU)
    4. Dialup modem
    5. Layer 2 switch
    6. Router

  4. Which statements are true regarding connection-orientated packet-switched networks? (Choose three.)

    1. A virtual circuit is created for the duration of the packet delivery.
    2. Each packet has to carry only an identifier.
    3. Ethernet is an example.
    4. Full addressing information must be carried in each data packet.
    5. The Internet is an example.
    6. The network predetermines the route for each packet.

  5. Which technology supports long distance SONET and SDH connections using fiber-optic media?

    1. ATM
    2. DSL
    3. DWDM
    4. Frame Relay
    5. ISDN
    6. MPLS
    7. Municipal Wi-Fi
    8. VPN
    9. VSAT
    10. WiMAX

  6. What WAN technology is designed to deliver data, voice, and video simultaneously built on a cell-based architecture?

    1. ATM
    2. DSL
    3. DWDM
    4. Frame Relay
    5. ISDN
    6. MPLS
    7. Municipal Wi-Fi
    8. VPN
    9. VSAT
    10. WiMAX

  7. ISDN PRI is composed of how many B channels in North America?

    1. 2
    2. 16
    3. 23
    4. 30
    5. 64

  8. The ability to connect securely to a private network over a public network is provided by which WAN technology?

    1. ATM
    2. DSL
    3. DWDM
    4. Frame Relay
    5. ISDN
    6. MPLS
    7. VPN
    8. VSAT
    9. WiMAX

  9. What term describes the cabling that connects the customer site to the nearest exchange of the WAN service provider?

    1. CO
    2. DCE
    3. DTE
    4. Local loop

  10. Which two statements about a circuit-switched network are true? (Choose two.)

    1. A dedicated secure circuit is established between each pair of communicating nodes.
    2. A connection through the service provider network is established quickly before communications start.
    3. Multiple pairs of nodes can communicate over the same network channel.
    4. The communication costs are lower.

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