1. The introduction of DWDM technology is attractive because ________.

	a.	it is a cost-effective way to increase the transmission system bandwidth
	b.	it will one day replace TDM technology

2. New testing tools are required for DWDM testing because __________.

	a.	transmission rates are too high for actual testing instruments
	b.	DWDM transmission brings a new spectral dimension into play

3. Channel center wavelength is an important parameter because ___________.

	a.	DWDM systems are precisely tuned for defined and dedicated wavelengths
	b.	it will have a major impact on the loss budget

4. Optical signal-to-noise ratio is ________.

	a.	a good indication of the power loss in the system
	b.	the best indicator of a channel's overall performance

5. The dynamic range of an optical spectrum analyzer is ________.

	a.	the ability to measure a weak signal in the presence of or next to a strong one
	b.	the indication of the optical spectrum analyzer's distance range

6. The redesigned field optical spectrum analyzer is __________.

	a.	the leading candidate for DWDM transmission field testing
	b.	a new instrument that is similar to the lab optical spectrum analyzer

7. The strength of the multiwavelength meter is ________.

	a.	its capacity to measure optical signal-to-noise ratio
	b.	its ability to measure a wavelength with very good absolute accuracy

8. An optical time domain reflectometer will __________.

	a.	no longer be used to test DWDM transmission systems
	b.	have to be adapted to the new DWDM reality

9. Chromatic dispersion has a major affect on DWDM system performance because ___________.

	a.	it impacts the loss budget of the system
	b.	it can have an impact on the four-wave mixing phenomenon

10. Polarization mode dispersion is ____________.

	a.	no longer a problem in DWDM systems
	b.	a phenomenon that may impact DWDM system performances at high bit rates