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CCNP Practical Studies: Using DSL to Access a Central Site

  • Sample Chapter is provided courtesy of Cisco Press.
  • Date: Jan 30, 2004.

Contents

  1. ADSL Overview
  2. Cisco 6160 DSLAM Overview
  3. Cisco 6400 UAC Overview
  4. DSL Access Architectures and Protocols
  5. Scenarios
  6. Practical Exercise 8-1: PPPoA over DSL
  7. Practical Exercise 8-1 Solution
  8. Practical Exercise 8-2: RFC 1483 Bridging over DSL
  9. Practical Exercise 8-2 Solution
  10. Summary
  11. Review Questions

Chapter Description

This sample chapter focuses on Digital Subscriber Line (DSL) technology, one of the most popular broadband access methods and a new topic on the CCNP exam.

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Review Questions

  1. Which of the following modulation methods is not used for ADSL technology?

    1. CAP

    2. 2B1Q

    3. DMT-2

    4. G.lite

  2. RFC 1483 when implemented is __________.

    1. Bridged

    2. Routed

    3. Decrypted

    4. Encrypted

  3. PPPoA when implemented is __________.

    1. Bridged

    2. Routed

    3. Decrypted

    4. Encrypted

  4. Which of the following interferences degrades DSL services?

    1. Impedance changes

    2. Bridged taps

    3. Crosstalk

    4. Impulse hits

    5. All of the above

  5. What is the function of the POTS splitter?

    1. It separates low and high frequencies.

    2. It manages ADSL signaling.

    3. It generates ringing voltage.

    4. It boosts the ADSL signal.

  6. The DSL interface on a Cisco 827 is __________.

    1. An FDDI interface

    2. A Frame Relay interface

    3. A serial interface

    4. An ATM interface

  7. With PPP over ATM, __________. (Choose all that apply.)

    1. MAC frames are encapsulated into ATM cells

    2. UDP frames are encapsulated using RFC 1483

    3. IP packets are encapsulated into PPP frames and then into ATM cells

    4. IP packets are encrypted

  8. With RFC 1483 bridging, __________.

    1. MAC frames are passed across the bridge after LLC/SNAP information is appended

    2. IP frames are passed across the bridge unchanged

    3. MAC frames are passed across the bridge unchanged

    4. IP packets are encrypted

  9. Which of the following cards in the Cisco 6400 can be used for Layer 3 packet services?

    1. NSP

    2. NLC

    3. NRP

    4. NI-2

  10. Which of the following is part of PPPoA configuration?

    1. encapsulation aal5mux ppp Virtual-Template 1

    2. encapsulation aal5snap

    3. atm route-bridged ip

    4. bridge 1 protocol ieee

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