(Optical SDH) and 1800+ Exams Preparation Program

Exam Code:


Exam Title:

Optical SDH

Last Update Time:

Jul 6, 14


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Overview of 642-321 certification exam

This exam is retired and not valid now. The exam number is 642-321 Optical SDH and the exam name is Cisco Optical Specialist. This exam was available in English. This exam was discontinued on 15th February 2007. No replacement is available for this exam. No training courses are available for this Cisco certification exam now.

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