This exam is retired and not valid now. The exam number is 640-915 METRO and the exam name is Building Cisco Metro Optical Networks. This exam was available in English. The length of the exam is 165 minutes. The candidate must be familiar with the following topics: various DWDM fibers basic, SDH and Sonet vs. SDH, TMN and so on. The associated certification is Cisco Optical Specialist. No information is available for how many questions did the exam have, the expired date and the replacement.
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