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End-to-End DSL Architectures by Wayne C. Vermillion

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Chapter 4

1: What is the NSP switch default ATM protocol?
  1. LAPD

  2. X.25

  3. UNI 4.0

  4. ISDN

A1: Answer: C. This is the only ATM protocol listed.
2: Which of the following best describes SONET APS on the 6400 system?
  1. Redundant NLC cards supplying OC-3 traffic to the NSP

  2. Redundant NRP2 ports supplying OC-C traffic to the NSP

  3. The 6400 system does not support SONET APS

  4. Redundant NSP configured for failover

A2: Answer: A. The NLC is the only 6400 module that supports SONET and its international equivalent, SDH.
3: When two NRP2s are configured in a redundant configuration, which of the following is true?
  1. Both NRP2s provide redundant traffic to the NSP

  2. Both NRP2s provide redundant traffic to the NLC

  3. Both NSPs provide redundant traffic to the NPP

  4. None of the above

A3: Answer: A. ...

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