642-321 Cisco Optical SDH Exam (SDH)
Note 1: 642-321 Exhibit and all related diagrams are not shown in demo questions.
Note 2: 642-321 Answers are not shown in demo questions.
Exhibits and Answers are only provided in the Full Version.
Note 2: 642-321 Answers are not shown in demo questions.
Exhibits and Answers are only provided in the Full Version.
Demo Question 1.
What is an advantage of an externally modulated laser over a directly modulated laswer?
A. Lower cost
B. Higher chirp
C. Easier to manufacture
D. Higher dispersion tolerance
E. Higher optical signal-to-noise ratio
Display Answer
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