Nortel 920-449 real exam prep : Nncse contivity security

  • Exam Code: 920-449
  • Exam Name: Nncse contivity security
  • Updated: Jul 28, 2026
  • Q&As: 52 Questions and Answers

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Nortel 920-449 Exam Syllabus Topics:

SectionObjectives
VPN Technologies and Architecture- VPN fundamentals
  • 1. Site-to-site and remote access VPN concepts
    • 2. Tunneling protocols overview
      - MPLS VPN integration
      • 1. Layer 2 vs Layer 3 VPNs
        • 2. Provider-provisioned VPN services
          QoS and Traffic Engineering- Traffic management
          • 1. Bandwidth allocation strategies
            • 2. QoS classification and marking
              - Performance optimization
              • 1. Congestion avoidance techniques
                • 2. Latency and jitter control
                  Carrier Grade Routing and VPN Services- Routing in VPN environments
                  • 1. Route segregation and VRF concepts
                    • 2. BGP for VPN route exchange
                      - Service provisioning
                      • 1. Customer edge and provider edge configuration
                        • 2. VPN scalability considerations
                          Network Security Fundamentals- Security models and principles
                          • 1. Confidentiality, integrity, availability (CIA)
                            • 2. Authentication and authorization mechanisms
                              - Encryption technologies
                              • 1. IPSec architecture
                                • 2. Encryption and key management concepts
                                  Operations and Troubleshooting- Issue resolution
                                  • 1. Service restoration procedures
                                    • 2. Common VPN failure scenarios
                                      - Network monitoring
                                      • 1. VPN performance monitoring tools
                                        • 2. Fault detection and logging

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