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Cisco 400-007 Exam Syllabus Topics:

SectionObjectives
Topic 1: Routing and Path Control- Traffic engineering
  • 1. Policy-based routing considerations
    • 2. Path optimization techniques
      - Routing protocol design
      • 1. OSPF / IS-IS architecture
        • 2. BGP policy and scalability
          Topic 2: Network Design Methodology and Principles- Design lifecycle and methodology
          • 1. Design phases and validation approaches
            • 2. Trade-off analysis techniques
              - Requirements gathering and analysis
              • 1. Business and technical constraints
                • 2. Stakeholder requirements mapping
                  Topic 3: MPLS and VPN Architectures- VPN design
                  • 1. L3VPN and L2VPN design models
                    • 2. Multi-site connectivity strategies
                      - MPLS fundamentals
                      • 1. Label switching architecture
                        • 2. MPLS scalability design
                          Topic 4: End-to-End Enterprise Architecture Scenarios- Large-scale enterprise design
                          • 1. Scalability and resiliency trade-offs
                            • 2. High availability and redundancy
                              - Service integration
                              • 1. Hybrid connectivity design
                                • 2. Migration and transformation strategies
                                  Topic 5: Infrastructure Design (Layer 2 / Layer 3)- Layer 3 design
                                  • 1. IP addressing and summarization
                                    • 2. IGP selection and design
                                      - Layer 2 technologies
                                      • 1. Ethernet scaling and segmentation
                                        • 2. Spanning Tree design considerations
                                          Topic 6: Multicast and Advanced Services- Network services
                                          • 1. Security integration in design
                                            • 2. QoS design principles
                                              - Multicast design
                                              • 1. Multicast distribution models
                                                • 2. PIM architecture and scaling

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                                                  Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q72-Q77):

                                                  NEW QUESTION # 72
                                                  What is a disadvantage of the traditional three-tier architecture model when east west traffic between different pods must go through the distribution and core layers?

                                                  Answer: B


                                                  NEW QUESTION # 73
                                                  What are two primary design constraints when a robust infrastructure solution is created? (Choose two.)

                                                  Answer: B,C


                                                  NEW QUESTION # 74
                                                  Refer to the exhibit A customer network design team is planning a migration from a legacy TDM- based L2VPN to an MPLS-based L3VPN Migration is planned in a phased approach:
                                                  - OSPF backbone Link between HUB A and HUB B sites to be migrated to
                                                  eBGP
                                                  - Spoke A2 and Spoke B1 will be migrated to the L3VPN
                                                  Which solution design can be considered to avoid routing loops during backbone link migration?

                                                  Answer: D


                                                  NEW QUESTION # 75
                                                  An engineer must redesign the QoS strategy due to oversubscription and excessive packet drops. What QoS technique should be used to manage traffic leaving the edge router and reduce packet drops?

                                                  Answer: D

                                                  Explanation:
                                                  # Explanation:
                                                  * B: Traffic shaping buffers excess traffic and releases it gradually to match the configured rate, preventing congestion and dropped packets on outbound interfaces. It's ideal for controlling egress traffic to match the service provider's rate.
                                                  Other options:
                                                  * A: LLQ (Low Latency Queueing) provides strict priority queuing but doesn't control overall rate or prevent oversubscription.
                                                  * C: Rate-limiting enforces a cap and drops packets exceeding the threshold.
                                                  * D: Policing drops excess traffic immediately and is more aggressive than shaping.


                                                  NEW QUESTION # 76
                                                  An architect prepares a network design for a startup company. The design must meet business requirements while the business grows and divests due to rapidly changing markets. What is the highest priority in this design?

                                                  Answer: D


                                                  NEW QUESTION # 77
                                                  ......

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