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Hybrid/Fiber Coax (HFC) and Dense Wavelength Division Multiplexing (DWDM) Networks

Table of Contents:
Definition and Overview
1. Effective Use of Fiber Deeper
2. Increasing Reusable Bandwidth
3. Determining Node Size
4. Using 1550-nm Transmitters
5. Technology Offers Lower Cost, Higher Value
6. Using 1310 nm for Narrowcasting
7. Raising Bandwidth While Lowering Costs
8. SONET Multiplexer Enables Voice, Data, and Video
9. Using the Analog Network for Interactive Traffic
10. Conclusion
Self-Test
Glossary
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Self-Test
1. A gigahertz-based coax line is capable of delivering how many times more bandwidth than copper?
a. 2
b. 50
c. 1,000
d. 2,000
2. As fiber is driven deeper into networks, node size can be reduced to fifty homes, resulting in how many times more bandwidth per user?
a. 10
b. 3
c. 20
d. 5
3. To overcome the problem of requiring a large amount of bandwidth for uncompressed analog video, operators should _______.
a. install fiber deeper
b. use dense wave division multiplexing
c. use 1550-nm technology
d. increase the number of nodes
4. As more services are added to broadcast video, the first network goal is to ________.
a. install more fiber
b. build two networks, one for video and one for voice and data
c. increase the reusable bandwidth per user
d. install more nodes
5. What determines how many fibers a multimedia backbone can run?
a. wavelength
b. spectral efficiency
c. frequency
d. spatial multiplexing
6. How many high-speed cable modems have been deployed in North America?
a. 1 million
b. 2 million
c. 250,000
d. 100,000
7. HFC architecture can be combined with a copper-based FITL system by reducing the node size to twelve homes and using _________.
a. 1550-nm transmission
b. 1310-nm technology
c. higher frequency
d. YEDFA technology
8. 1550-nm technology has experienced a significant increase in value since it was deployed in ________.
a. 1996
b. 1992
c. 1991
d. 1995
9. In 1310-nm transmitters, local video, advertising, and interactive services can be delivered through ________.
a. the broadcast port
b. the narrowcast port
c. either port
d. none of the above
10. Traditional DWDM is capable of multiplexing how many 1550-nm transmitters onto a single fiber?
a. 2
b. 12
c. 8
d. 4
Glossary >>

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