Exam 4A0-205 Topic 4 Question 18 Discussion

Actual exam question for Nokia's 4A0-205 exam
Question #: 18
Topic #: 4
Which of the following statements is true about chromatic dispersion (CD)?

Suggested Answer: C Vote an answer

Different wavelengths propagate at different speeds within the same media and therefore different colors travel in the fiber with different speed. This phenomenon is known as chromatic dispersion and causes light to spread out as it travels through the fiber over distance, leading to signal attenuation and distortion. The fiber attenuation does not introduce inter-channel interference, but it can cause attenuation of the signal. Different channels have different bandwidths, but this does not affect CD performance.

by Heather at May 18, 2026, 01:36 AM

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