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Cisco 400-007 Exam Syllabus Topics:

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

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                                                  Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q338-Q343):

                                                  NEW QUESTION # 338
                                                  Before migrating anything to the cloud, what are three cloud readiness assessment steps that are required to perform? (Choose three.)

                                                  Answer: A,D,G

                                                  Explanation:
                                                  Evaluating available in-house resources ensures the organization has the necessary skills and staffing for migration.
                                                  Identifying the scope and business cases defines what should be migrated and why, aligning with business goals.
                                                  Assessing infrastructure requirements ensures the cloud environment can support workloads effectively.


                                                  NEW QUESTION # 339
                                                  Which design principle improves network resiliency?

                                                  Answer: A

                                                  Explanation:
                                                  * B (Added redundancy): Redundancy ensures alternate paths or systems are available if a failure occurs, which is the primary design principle behind resiliency. Redundancy directly contributes to higher network availability and fault tolerance.
                                                  Why other options are incorrect:
                                                  * A: Load-balancing optimizes performance but doesn't inherently improve resiliency.
                                                  * C: Confidentiality addresses security, not resiliency.
                                                  * D: Reliability is an outcome, not a design principle itself.
                                                  -


                                                  NEW QUESTION # 340
                                                  In the wake of a security compromise incident where the internal networks were breached by an outside attacker at the perimeter of the infrastructure, an enterprise is now evaluating potential measures that can help protect against the same type of incident in the future. What are two design options that can be employed? (Choose two)

                                                  Answer: C,D


                                                  NEW QUESTION # 341
                                                  When an SDN-based model is used to transmit multimedia traffic, which aspect should an architect consider while designing the network?

                                                  Answer: D


                                                  NEW QUESTION # 342
                                                  Refer to the exhibit.

                                                  Which impact of using three or more ABRs between the backbone area and area 1 is true?

                                                  Answer: B

                                                  Explanation:
                                                  In OSPF multi-area designs with multiple ABRs, when there is temporary inconsistency between the ABRs' type-3 summary LSAs, microloops can occur during convergence. These loops happen due to slight differences in LSA arrival and SPF calculations across routers while the network is converging.
                                                  * Microloops are short-lived but can cause brief packet loss.
                                                  * This becomes more likely as the number of ABRs grows and IGP flooding domains increase.
                                                  CCDE v3.1 emphasizes careful ABR design and possible use of loop avoidance mechanisms (e.g., LFA, microloop prevention techniques) in large-scale OSPF designs.
                                                  Why other options are incorrect:
                                                  * A: LSA flooding in OSPF scales well; type-3 LSA replication is not the primary scalability issue.
                                                  * B: ABRs process all LSAs regardless; load is not split.
                                                  * D: Multiple ABRs all independently summarize and advertise into the backbone.
                                                  -


                                                  NEW QUESTION # 343
                                                  ......

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