Cisco 350-023 : CCIE Written: WAN Switching

350-023 real exams

Exam Code: 350-023

Exam Name: CCIE Written: WAN Switching

Updated: Jul 27, 2026

Q & A: 400 Questions and Answers

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Cisco 350-023 Exam Syllabus Topics:

SectionObjectives
Topic 1: WAN QoS and Performance Optimization- QoS Mechanisms
  • 1. Queuing and congestion avoidance
    • 2. Classification and marking
      - WAN Optimization Techniques
      • 1. Traffic shaping and policing
        Topic 2: ATM (Asynchronous Transfer Mode)- ATM Architecture
        • 1. ATM adaptation layers (AAL1, AAL5)
          • 2. Virtual Path Identifier (VPI) / Virtual Channel Identifier (VCI)
            - ATM Switching and Signaling
            • 1. PNNI routing in ATM networks
              • 2. Traffic shaping and QoS in ATM
                Topic 3: Frame Relay- Frame Relay Operation
                • 1. Inverse ARP and LMI types
                  • 2. DLCI mapping and PVC/SVC concepts
                    - Traffic Management
                    • 1. Committed Information Rate (CIR)
                      • 2. FECN/BECN and congestion handling
                        Topic 4: WAN Switching Fundamentals- Packet vs Cell/Cell Relay Concepts
                        • 1. ATM cell structure and operation
                          • 2. Frame Relay fundamentals and LMI
                            Topic 5: MPLS and Emerging WAN Technologies (legacy context)- MPLS Fundamentals
                            • 1. LDP basics
                              • 2. Label switching architecture
                                - Traffic Engineering Concepts
                                • 1. Constraint-based routing concepts

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