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Cisco 642-321 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Cisco Optical Networking Devices | - Cisco ONS platform overview - Configuration and management basics |
| Topic 2: Protection and Restoration | - Ring protection mechanisms (MSP, SNCP) - Failure recovery strategies |
| Topic 3: Multiplexing and Transport | - Multiplexing techniques (STM-N, VC, TU structures) - Bandwidth and payload mapping |
| Topic 4: SDH / SONET Fundamentals | - SONET vs SDH comparison - Basic SDH architecture and hierarchy - Frame structure and transmission principles |
| Topic 5: Troubleshooting and Maintenance | - Performance monitoring and alarms - Fault detection and isolation |
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