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Cisco 642-321 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| SDH Configuration and Provisioning | 25% | - Performance monitoring parameters - Protection switching mechanisms - Path and trail provisioning |
| SDH Equipment and Interfaces | 25% | - Optical interfaces and line rates - Multiplexers, regenerators, cross-connects - Electrical to optical conversion |
| Maintenance, Troubleshooting & Standards | 25% | - Error rate analysis and diagnostics - ITU-T G.707, G.783, G.806 compliance - Alarm interpretation and fault isolation |
| SDH Fundamentals and Architecture | 25% | - Synchronization and timing principles - SDH standardization and hierarchy - Frame structure and overhead bytes |
