Pass Guaranteed Perfect 400-007 - Latest Cisco Certified Design Expert (CCDE) Written Exam Exam Materials

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Cisco 400-007 Exam Syllabus Topics:

SectionObjectives
Routing and Path Control- Routing protocol design
  • 1. BGP policy and scalability
    • 2. OSPF / IS-IS architecture
      - Traffic engineering
      • 1. Policy-based routing considerations
        • 2. Path optimization techniques
          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
                  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
                          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
                                  Infrastructure Design (Layer 2 / Layer 3)- Layer 2 technologies
                                  • 1. Ethernet scaling and segmentation
                                    • 2. Spanning Tree design considerations
                                      - Layer 3 design
                                      • 1. IGP selection and design
                                        • 2. IP addressing and summarization
                                          Multicast and Advanced Services- Network services
                                          • 1. QoS design principles
                                            • 2. Security integration in design
                                              - Multicast design
                                              • 1. PIM architecture and scaling
                                                • 2. Multicast distribution models

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                                                  Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q299-Q304):

                                                  NEW QUESTION # 299
                                                  You have been asked to design a high-density wireless network for a university campus. Which two principles would you apply in order to maximize the wireless network capacity? (Choose two.)

                                                  Answer: B,C

                                                  Explanation:
                                                  * B: Setting a higher minimum data rate reduces airtime consumption from low-speed clients, improving overall capacity.
                                                  * D: Utilizing 5 GHz reduces contention on the heavily congested 2.4 GHz band, allowing better spectral efficiency in high-density environments.
                                                  Why other options are incorrect:
                                                  * A: 2.4 GHz only supports 3 non-overlapping channels; 4-channel design introduces interference.
                                                  * C: Excessive SSIDs increase management overhead and beacon traffic.
                                                  * E: Channel bonding in 2.4 GHz is discouraged in high-density deployments due to channel overlap and interference.
                                                  -


                                                  NEW QUESTION # 300
                                                  A network hacker introduces a packet with duplicate sequence numbers to disrupt an IPsec session. During this, high-priority traffic is transmitted. What design parameter helps mitigate this?

                                                  Answer: D

                                                  Explanation:
                                                  Comprehensive and Detailed Explanation:
                                                  * B: The IPsec anti-replay mechanism protects against packet injection and replay attacks by rejecting packets outside the anti-replay window. Increasing the anti-replay window (e.g., to 4096) allows legitimate packets with slightly reordered or delayed sequence numbers to be accepted-especially critical during bursts or with asymmetric paths.
                                                  Other options:
                                                  * A: QoS marking does not prevent replay.
                                                  * C: Tunnel keyword restrictions don't address replay attacks.
                                                  * D: Shaping affects traffic rate, not sequence validation.


                                                  NEW QUESTION # 301
                                                  Which technology is an open-source infrastructure automation tool that automates repetitive tasks for users who work in networks such as cloud provisioning and intraservice orchestration?

                                                  Answer: D


                                                  NEW QUESTION # 302
                                                  Refer to the exhibit. Your company designed a network to allow server VLANs to span all access switches in a data center.
                                                  In the design, Layer 3 VLAN interfaces and HSRP are configured on the aggregation switches.
                                                  Which two features improve STP stability within the network design? (Choose two.)

                                                  Answer: D,F


                                                  NEW QUESTION # 303
                                                  A Tier-3 Service Provider is evolving into a Tier-2 Service Provider due to the amount of Enterprise business it is receiving The network engineers are re-evaluating their IP/MPLS design considerations in order to support duplicate/overlapping IP addressing from their Enterprise customers within each Layer3 VPN. Which concept would need to be reviewed to ensure stability in their network?

                                                  Answer: A


                                                  NEW QUESTION # 304
                                                  ......

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