WAN (Serial , Isdn, Fr, Ppp) - Practice Test

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A WAN – or wide area network – is a telecommunications or computer network that can extend over a large geographical distance, as opposed to a local area network which doesn’t stretch nearly as far. What do you know about them?


Questions and Answers
  • 1. 
    What are three basic types of WAN services that the CISCO router can use?
    • A. 

      Call setup services, TDM, Packet Data services(X.25, FR and ATM)

    • B. 

      Call setup services, TDM, FDM

    • C. 

      SS7, FDM, STDM

    • D. 

      None of above

  • 2. 
    TDM WAN services offers and are usually traditional __________ circuits?
    • A. 

      Fixed time slots; lease line circuits point-to-point

    • B. 

      Sets up and clears calls between hosts; SVCs

    • C. 

      Sets up and clears calls between hosts; SVCs

    • D. 

      Sets up and clears calls between hosts; SVCs

  • 3. 
    What are the two components on a WAN interface and which component is the router?
    • A. 

      DTE and DCE, router is DTE

    • B. 

      CPE and DTE, router is DTE

    • C. 

      CPE and DCE, router is DCE

    • D. 

      CPE and CO, router is CPE

  • 4. 
    What the CISCO default encapsulation type on a serial interface?
    • A. 

      NOVELL_ETHER

    • B. 

      ARPA

    • C. 

      HDLC

    • D. 

      ETHERNET

    • E. 

      PPP

  • 5. 
    Is Cisco HDLC protocol interoperable with other vendors HDLC?
    • A. 

      Yes. HDLC is a standard

    • B. 

      No. Cisco HDLC is a proprietary implementation.

    • C. 

      None of the above

  • 6. 
    What is a common standard found at the physical level standard for X.25?
    • A. 

      RS-232

    • B. 

      RS-449

    • C. 

      X.21 bis

    • D. 

      X.25

  • 7. 
    ISDN stands for _____________?
    • A. 

      I still don’t no and provides an integrated voice and data capability service to the customer

    • B. 

      Integrated Services Digital Network and provides an integrated voice and data capability service to the customer premise.

    • C. 

      Integrated Switched Digital Network and provides voice grade service to the customer.

  • 8. 
    The Bearer channel speed is _______ and the D-Channel speed is ___________?
    • A. 

      Bearer channels speed is 128K and D-channel is 64K.

    • B. 

      Bearer channels speed is 64K and D-channel is 16K.

    • C. 

      Bearer channels speed is 64K and D-channel is 64K.

    • D. 

      None of above

  • 9. 
    The ISDN standard is organized into three groups.  What are the groups and what does each groups specify?
    • A. 

      E, I and Q Series. E-Addressing scheme;I-Concepts and Terminology;Q-Signalling standards.

    • B. 

      S/T, U, and I Series. S/T – Interfaces specification; U-Users interface; I-Concepts and Terminology

    • C. 

      TA, S/T, and U Series. TA – Terminal interface; S/T – Interface specification;U-Users interface.

  • 10. 
    What are the two types of access a customer may subscribe?
    • A. 

      BRI, PRI

    • B. 

      BRI, DDR

    • C. 

      DDR, PPP

    • D. 

      BRI, Q.931

  • 11. 
    If you are connecting an ISDN circuit to your router into a Series interface, what kind of device must you connect into the serial port?
    • A. 

      TA

    • B. 

      NT1

    • C. 

      S/T

    • D. 

      TE1

  • 12. 
    If you are connecting an ISDN circuit into a BRI port, what kind of device must you connect to the BRI port?
    • A. 

      None. You have a native ISDN interface.

    • B. 

      TE1.

    • C. 

      TA

    • D. 

      NT1

  • 13. 
    Frame Relay is __________?
    • A. 

      Connection-oriented

    • B. 

      Connectionless

    • C. 

      Connectionless acknowledged

    • D. 

      Connectionless acknowledged

  • 14. 
    What are the two FR encapsulation types supported within the CISCO IOS ?
    • A. 

      CISCO, IETF

    • B. 

      CISCO, ANSI

    • C. 

      ANSI, IETF

    • D. 

      None of the above

  • 15. 
    What are the three LMI types that are supported within the CISCO IOS?
    • A. 

      CISCO, ANSI, Q931

    • B. 

      CISCO, ANSI, IETF

    • C. 

      CISCO, ANSI, Q921

    • D. 

      CISCO, ANSI, Q933a

  • 16. 
    What is the top speed for FR connections is ________?
    • A. 

      45Mbps

    • B. 

      10Mbps

    • C. 

      56Kbps

    • D. 

      64Kbps

  • 17. 
    Frame Relay networks are considered to be ____?
    • A. 

      Non-broadcast

    • B. 

      Broadcast

    • C. 

      Multicast

    • D. 

      Point-to-point

  • 18. 
    With Frame-relay, the encapsulation type should agree between _____?
    • A. 

      End devices

    • B. 

      The end device and the switch

    • C. 

      Switches

    • D. 

      The end devices and the switches

  • 19. 
    With Frame-relay, the LMI type should agree between _____?
    • A. 

      End devices

    • B. 

      The end device and the switch

    • C. 

      Switches

    • D. 

      The end devices and the switches

  • 20. 
    A frame relay switch makes decisions based on ______?
    • A. 

      Application Layer addresses

    • B. 

      Network Layer addresses

    • C. 

      Data Link Layer address

    • D. 

      None of the above

  • 21. 
    CIR refers to ________?
    • A. 

      The minimum bandwidth available on a frame relay link

    • B. 

      The maximum bandwidth available on a frame relay link

    • C. 

      The average bandwidth available on a frame relay link

    • D. 

      The guaranteed bandwidth available on a frame relay link

  • 22. 
    The end node addressing for frame-relay is _____?
    • A. 

      BECN

    • B. 

      FECN

    • C. 

      DLCI

    • D. 

      ESI

  • 23. 
    The DLCI for frame relay is guaranteed to be unique _____?
    • A. 

      Across the frame relay cloud

    • B. 

      Across a providers frame relay network

    • C. 

      Across the router’s interface

    • D. 

      Across a frame relay switch’s interfaces

    • E. 

      None of the above

  • 24. 
    The Frame relay service address provided by the service provider is called a ______?
    • A. 

      DLCI

    • B. 

      X.121

    • C. 

      SPID

    • D. 

      Telephone number

  • 25. 
    When configuring a frame relay static route, you must specify _____?
    • A. 

      The destination layer 3 address and local DLCI

    • B. 

      The destination layer 3 address and destination DLCI

    • C. 

      The local layer 3 address and local DLCI

    • D. 

      Any of the above

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