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Cisco 300-420 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: WAN for Enterprise Networks20%- WAN resiliency and high availability
- VPN design
  • 1. Site-to-site VPN
    • 2. DMVPN, L2VPN, L3VPN
      - WAN connectivity options
      • 1. MPLS, Metro Ethernet, 4G/5G
        • 2. SD-WAN architecture and design
          Topic 2: Security Services10%- Secure connectivity
          - Security architecture design
          • 1. Threat defense integration
            • 2. Network segmentation
              Topic 3: Advanced Addressing and Routing Solutions25%- IPv4 and IPv6 addressing design
              • 1. Structured addressing plans
                • 2. Route summarization and aggregation
                  - Routing protocol design
                  • 1. Route redistribution and filtering
                    • 2. EIGRP design
                      • 3. OSPF design
                        • 4. IS-IS design
                          Topic 4: Software-Defined Access (SDA)5%- Fabric design and deployment
                          - SD-Access architecture
                          - Control plane and data plane design
                          Topic 5: Network Services15%- Multicast design
                          - IP services
                          • 1. DHCP, DNS, NAT
                            - Quality of Service (QoS)
                            • 1. Policing, shaping, congestion management
                              • 2. Classification and marking
                                Topic 6: Advanced Enterprise Campus Networks25%- Layer 2 campus design
                                • 1. VLAN and trunking design
                                  • 2. Hierarchical architecture
                                    • 3. Spanning Tree Protocol optimization
                                      - Layer 3 campus design
                                      • 1. Virtualization and segmentation
                                        • 2. Routing in campus infrastructure
                                          - Wireless integration

                                          >> 300-420日本語版テキスト内容 <<

                                          300-420試験の準備方法｜効率的な300-420日本語版テキスト内容試験｜一番優秀なDesigning Cisco Enterprise Networksトレーリング学習

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                                          Cisco Designing Cisco Enterprise Networks 認定 300-420 試験問題 (Q436-Q441):

                                          質問 # 436
                                          Which feature is required for graceful restart to recover from a processor failure?

                                          正解：D

                                          解説：
                                          Explanation
                                          https://archive.nanog.org/meetings/nanog42/presentations/Weissner_SSO.pdf The Stateful Switchover (SSO) feature works with Nonstop Forwarding (NSF) in Cisco software to minimize the amount of time a network is unavailable to its users following a switchover. The primary objective of SSO is to improve the availability of networks constructed with Cisco routers.


                                          質問 # 437
                                          A branch office has a primary L3VPN MPLS connection back to the main office and an IPSEC VPN tunnel that serves as backup. Which design ensures that data is sent over the backup connection only if the primary MPLS circuit is down?

                                          正解：E

                                          解説：
                                          Static routes tied to IP SLA with a floating static backup route provide the cleanest active/standby design for this requirement. The MPLS L3VPN path is the primary connection and should carry traffic while it is available. IP SLA can actively test reachability across the primary path, and object tracking can remove the primary static route if the test fails. The backup IPsec VPN route is configured with a higher administrative distance, so it remains inactive until the primary route is withdrawn. This design is deterministic and prevents traffic from using the backup tunnel during normal operation. Running EIGRP across both paths could allow dynamic path selection, but it would require careful metric manipulation and could still introduce unintended failover behavior. BGP multipath is the opposite of the requirement because it is designed to install multiple paths simultaneously for load sharing. OSPF passive-interface on the backup connection would prevent neighbor formation rather than provide reliable backup routing. For a branch with one primary MPLS path and one backup IPsec path, tracked static routing with IP SLA is the appropriate design.


                                          質問 # 438
                                          What is the purpose of a border node in a Cisco SD-Access fabric?

                                          正解：C


                                          質問 # 439
                                          Which two functions does the control plane node provide in a Cisco SD-Access architecture?
                                          (Choose two.)

                                          正解：A、D

                                          解説：
                                          https://www.ciscolive.com/c/dam/r/ciscolive/us/docs/2018/pdf/BRKEWN-2020.pdf (page 33)


                                          質問 # 440
                                          Refer to the exhibit.
                                          C0FD9 F48C9ACDC725EA850EC2476EE1E

                                          An architect must design a solution that uses the direct link between R1 and R2 for traffic from 10.10.10.0/24 toward network 10.10.20.0/24. Which solution should the architect include in the design?

                                          正解：D


                                          質問 # 441
                                          ......

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