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1. The introduction of DWDM technology is attractive because ________.
| a.
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it is a cost-effective way to increase the transmission system bandwidth
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| b.
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it will one day replace TDM technology
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2. New testing tools are required for DWDM testing because __________.
| a.
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transmission rates are too high for actual testing instruments
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| b.
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DWDM transmission brings a new spectral dimension into play
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3. Channel center wavelength is an important parameter because ___________.
| a.
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DWDM systems are precisely tuned for defined and dedicated wavelengths
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| b.
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it will have a major impact on the loss budget
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4. Optical signal-to-noise ratio is ________.
| a.
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a good indication of the power loss in the system
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| b.
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the best indicator of a channel's overall performance
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5. The dynamic range of an optical spectrum analyzer is ________.
| a.
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the ability to measure a weak signal in the presence of or next to a strong one
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| b.
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the indication of the optical spectrum analyzer's distance range
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6. The redesigned field optical spectrum analyzer is __________.
| a.
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the leading candidate for DWDM transmission field testing
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| b.
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a new instrument that is similar to the lab optical spectrum analyzer
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7. The strength of the multiwavelength meter is ________.
| a.
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its capacity to measure optical signal-to-noise ratio
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| b.
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its ability to measure a wavelength with very good absolute accuracy
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8. An optical time domain reflectometer will __________.
| a.
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no longer be used to test DWDM transmission systems
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| b.
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have to be adapted to the new DWDM reality
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9. Chromatic dispersion has a major affect on DWDM system performance because ___________.
| a.
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it impacts the loss budget of the system
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| b.
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it can have an impact on the four-wave mixing phenomenon
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10. Polarization mode dispersion is ____________.
| a.
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no longer a problem in DWDM systems
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| b.
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a phenomenon that may impact DWDM system performances at high bit rates
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