Cisco - CCNA 4 - Chapter 2 version 5.03 Exam Answers

1. A small company with 10 employees uses a single LAN to share information between computers. Which type of connection to the Internet would be appropriate for this company?

   • a dialup connection that is supplied by their local telephone service provider
   • Virtual Private Networks that would enable the company to connect easily and securely with employees
   • private dedicated lines through their local service provider
   • a broadband service, such as DSL, through their local service provider

2. Which network scenario will require the use of a WAN?

   • Employee workstations need to obtain dynamically assigned IP addresses.
   • Employees need to connect to the corporate email server through a VPN while traveling.
   • Employees in the branch office need to share files with the headquarters office that is located in a separate building on the same campus network.
   • Employees need to access web pages that are hosted on the corporate web servers in the DMZ within their building.

3. Which statement describes a characteristic of a WAN?

   • A WAN operates within the same geographic scope of a LAN, but has serial links.
   • WAN networks are owned by service providers.
   • All serial links are considered WAN connections.
   • A WAN provides end-user network connectivity to the campus backbone.

4. Which two devices are needed when a digital leased line is used to provide a connection between the customer and the service provider? (Choose two.)

   • access server
   • CSU
   • Layer 2 switch
   • DSU
   • dialup modem

5. What is a requirement of a connectionless packet-switched network?

   • Each packet has to carry only an identifier.
   • The network predetermines the route for a packet.
   • Full addressing information must be carried in each data packet.
   • A virtual circuit is created for the duration of the packet delivery.

6. What is an advantage of packet-switched technology over circuit-switched technology?

   • Packet-switched networks are less susceptible to jitter than circuit-switched networks are.
   • Packet-switched networks can efficiently use multiple routes inside a service provider network.
   • Packet-switched networks do not require an expensive permanent connection to each endpoint.
   • Packet-switched networks usually experience lower latency than circuit-switched networks experience.

7. What is a long distance fiber-optic media technology that supports both SONET and SDH, and assigns incoming optical signals to specific wavelengths of light?

   • ISDN
   • MPLS
   • ATM
   • DWDM

8. What is the recommended technology to use over a public WAN infrastructure when a branch office is connected to the corporate site?

   • ATM
   • ISDN
   • municipal Wi-Fi
   • VPN

9. What are two common high-bandwidth fiber-optic media standards? (Choose two.)

   • ANSI
   • ATM
   • ITU
   • SDH
   • SONET

10. Which WAN technology establishes a dedicated constant point-to-point connection between two sites?

    • ATM
    • ISDN
    • leased lines
    • Frame Relay

11. Which WAN technology is cell-based and well suited to carry voice and video traffic?

    • ATM
    • ISDN
    • VSAT
    • Frame Relay

12. Which solution can provide Internet access to remote locations where no regular WAN services are available?

    • VSAT
    • WiMAX
    • Ethernet
    • municipal Wi-Fi

13. A customer needs a WAN virtual connection that provides high-speed, dedicated bandwidth between two sites. Which type of WAN connection would best fulfill this need?

    • circuit-switched network
    • Ethernet WAN
    • MPLS
    • packet-switched network

14. A home user lives within 10 miles (16 kilometers) of the Internet provider network. Which type of technology provides high-speed broadband service with wireless access for this home user?

    • 802.11
    • municipal Wi-Fi
    • DSL
    • WiMAX

15. Which feature is used when connecting to the Internet using DSL?

    • DSLAM
    • CMTS
    • IEEE 802.16
    • LTE

16. Which equipment is needed for an ISP to provide Internet connections through cable service?

    • CMTS
    • DSLAM
    • CSU/DSU
    • access server

17. Which connectivity method would be best for a corporate employee who works from home two days a week, but needs secure access to internal corporate databases?

    • cable
    • DSL
    • VPN
    • WiMAX

18. Which wireless technology provides Internet access through cellular networks?

    • satellite
    • municipal WiFi
    • LTE
    • WiMAX

19. Which statement describes cable?

    • Delivering services over a cable network requires downstream frequencies in the 50 to 860 MHz range, and upstream frequencies in the 5 to 42 MHz range.
    • The cable subscriber must purchase a cable modem termination system (CMTS).
    • Each cable subscriber has dedicated upstream and downstream bandwidth.
    • Cable subscribers may expect up to 27 Mbps of bandwidth on the upload path.

20. A new corporation needs a data network that must meet certain requirements. The network must provide a low cost connection to sales people dispersed over a large geographical area. Which two types of WAN infrastructure would meet the requirements? (Choose two.)

    • public infrastructure
    • private infrastructure
    • Internet
    • dedicated
    • satellite

21. A corporation is looking for a solution to connect multiple, newly established remote branch offices. Which consideration is important when selecting a private WAN connection rather than a public WAN connection?

    • lower cost
    • higher data transmission rate
    • website and file exchange service support
    • data security and confidentiality during transmission

22. Which geographic scope requirement would be considered a distributed WAN scope?

    • local
    • one-to-one
    • one-to-many
    • many-to-many
    • regional
    • global

23. Match the type of WAN device or service to the description. (Not all options are used.)

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