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Optical Access

Table of Contents:
Definition and Overview
1. Introduction
2. Need for Optical Access
3. How Optical Access Fulfills the Need
4. Technology Workings
5. Access Topologies and Applications
6. Optical Access Benefits
7. Optical Access Summary
Self-Test
Glossary
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Self-Test
1. The access network is that portion of the public switched network that connects access nodes to individual subscribers.
a. true
b. false
2. Fiber is actually a scarce resource.
a. true
b. false
3. The idea of using optical fiber to connect CPE to carrier facilities is a new one.
a. true
b. false
4. The most effective use of optical fiber in an access network is to carry information directly on individual wavelengths.
a. true
b. false
5. Which of the following is not one of the 3R techniques for signal integrity?
a. retiming
b. removal
c. regeneration
d. reshaping
6. Which of the following is most evident in multidrop configurations?
a. aggregated multichannel point to point
b. arbitrary mesh
c. spatially distributed WDM
d. aggregated point to point using a single channel
7. It is not very likely that multichannel systems will be intermixed with single-channel, point-to-point links.
a. true
b. false
8. Which of the following is generally appropriate for campus and riser applications?
a. aggregated multichannel point to point
b. arbitrary mesh
c. spatially distributed WDM
d. aggregated point to point using a single channel
9. Which of the following is not characteristic of new optical access solutions?
a. New equipment can bridge the gap between voice- and data-oriented architectures.
b. The need for protocol conversion is minimized.
c. Customers may control how much bandwidth they add or remove.
d. Carriers physically restructure equipment.
10. Both WDM and non–WDM links will be required for arbitrary mesh topologies.
a. true
b. false
Glossary >>

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