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Cisco 400-007 Exam Syllabus Topics:

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

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                                                  Pass Guaranteed Quiz 2026 Cisco 400-007: Reliable New Cisco Certified Design Expert (CCDE) Written Exam Exam Questions

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                                                  Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q177-Q182):

                                                  NEW QUESTION # 177
                                                  The Layer 3 control plane is the intelligence over the network that steers traffic toward its intended destination Which two techniques can be used in service provider-style networks to offer a more dynamic, flexible, controlled, and secure control plane design? (Choose two.)

                                                  Answer: B,D


                                                  NEW QUESTION # 178
                                                  A business requirement is supplied to an architect from a car manufacturer stating their business model is changing to just-in-time manufacturing and a new network is required, the manufacturer does not produce all of the specific components in-house, which area should the architect focus on initially?

                                                  Answer: C


                                                  NEW QUESTION # 179
                                                  What is the most important operational driver when building a resilient and secure modular network design?

                                                  Answer: A


                                                  NEW QUESTION # 180
                                                  An engineer must design a network for a company that uses OSPF LFA to reduce loops. Which type of loop would be reduced by using this design?

                                                  Answer: A

                                                  Explanation:
                                                  * B (Micro loops):OSPF Loop-Free Alternates (LFA) pre-calculate backup next-hops to reduce transient micro loops during the convergence process when primary routes fail.
                                                  Other options explained:
                                                  * A: DTP relates to trunk negotiation, not loop prevention.
                                                  * C: STP handles Layer 2 loops.
                                                  * D: REP is a Cisco Layer 2 redundancy protocol, unrelated to OSPF loop prevention.


                                                  NEW QUESTION # 181
                                                  A financial company requires that a custom TCP-based stock-trading application be prioritized over all other traffic for the business due to the associated revenue. The company also requires that VoIP be prioritized for manual trades. Which directive should be followed when a QoS strategy is developed for the business?

                                                  Answer: A

                                                  Explanation:
                                                  * B (Separate priority queues): Both VoIP and the custom stock-trading application require low latency and jitter guarantees but serve different business functions. Best practice is to place them in separate priority queues to prevent one application's bursts from affecting the other, ensuring deterministic service levels for both mission-critical services.
                                                  Other options explained:
                                                  * A: Sharing queues may lead to competition between traffic types, risking SLA violations.
                                                  * C/D: CBWFQ is not sufficient for true low-latency guarantees; priority queuing is required.
                                                  -


                                                  NEW QUESTION # 182
                                                  ......

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