Review Questions

The following review questions give you a chance to assess how well you've mastered the topics in this chapter. The answers to these questions can be found in Appendix A.

1:Which of the following impairments always prevents ADSL implementation?

  1. AM radio interference

  2. Impedance mismatch

  3. Load coils

  4. Bridged taps

2:Which of the following is not one of the three primary methods of forward error correction in ADSL?

  1. Trellis Coding

  2. DMT

  3. Interleaving

  4. Reed-Solomon Encoding

3:Reed-Solomon Encoding divides the data frame into several parts that are called what?

  1. Cells

  2. Code words

  3. Tins

  4. Codes

4:What does Trellis Coding do with small data errors?

  1. It retransmits them to the sender.

  2. It adds correcting cells and retransmits to the sender.

  3. It fixes the errors without ...

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