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Nortel 920-123

920-123

Exam Code: 920-123

Exam Name: NCSS-BayStack/BPS Switching Exam

Updated: Oct 13, 2026

Q&A Number: 45 Q&As

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Nortel 920-123 Exam Syllabus Topics:

SectionObjectives
Topic 1: BayStack Switching Platforms- Device configuration and management
  • 1. Basic CLI operations
    • 2. Switch stacking and uplink configuration
      Topic 2: Network Troubleshooting- Layer 2 diagnostics
      • 1. Connectivity and port issues
        • 2. Broadcast storm detection
          Topic 3: Spanning Tree Protocol (STP)- Loop prevention mechanisms
          • 1. Root bridge election process
            • 2. Port states and convergence
              Topic 4: VLAN Configuration and Management- VLAN design and implementation
              • 1. 802.1Q tagging basics
                • 2. Access vs trunk ports
                  Topic 5: Switching Fundamentals- Ethernet switching concepts
                  • 1. Collision domains vs broadcast domains
                    • 2. MAC address learning and forwarding

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