2026 Efficient 300-420: Designing Cisco Enterprise Networks Dumps Download

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Cisco 300-420 Exam Syllabus Topics:

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

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                                          Cisco 300-420 Practice Test - Latest Preparation Material [2026]

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                                          Cisco Designing Cisco Enterprise Networks Sample Questions (Q154-Q159):

                                          NEW QUESTION # 154
                                          What does the fabric data plane leverage in SD-Access Architecture?

                                          Answer: D


                                          NEW QUESTION # 155
                                          When differentiating between IETF, OpenConfig, and Cisco native YANG models, how does the use of containers differ?

                                          Answer: D


                                          NEW QUESTION # 156
                                          Refer to the exhibit.

                                          Which solution decreases the EIGRP convergence time?

                                          Answer: D


                                          NEW QUESTION # 157
                                          What is the main purpose of the Cisco SD-Access overlay design?

                                          Answer: D

                                          Explanation:
                                          The main purpose of the Cisco SD-Access overlay design is to enable the virtualized fabric services that run over the physical underlay. Cisco describes the overlay as the logical network created on top of the routed underlay, using virtual networks to provide segmentation and policy separation. SD-Access uses LISP for endpoint-to-location mapping and VXLAN for data-plane encapsulation, allowing Layer 2 and Layer 3 services to be delivered across a stable Layer 3 transport. Option C is the best available answer because the overlay exists to integrate and carry SD-Access services such as virtual networks, endpoint mobility, macrosegmentation, and security group policy. Simplified troubleshooting and visibility are management and assurance outcomes, not the overlay's main technical purpose. High availability depends on the underlay topology, node redundancy, and control-plane design, but it is not the primary definition of overlay design.
                                          Reference topics: SD-Access overlay, virtual networks, LISP, VXLAN, segmentation, fabric services.


                                          NEW QUESTION # 158
                                          An engineer must design a multicast network for a financial application. Most of the multicast sources also receive multicast traffic (many-to-many deployment model). To better scale routing tables, the design must not use source trees. Which multicast protocol satisfies these requirements?

                                          Answer: D


                                          NEW QUESTION # 159
                                          ......

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