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  • Exam Code: 300-420
  • Exam Name: Designing Cisco Enterprise Networks
  • Updated: Jul 26, 2026
  • Q & A: 457 Questions and Answers
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  • Exam Code: 300-420
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  • Exam Code: 300-420
  • Exam Name: Designing Cisco Enterprise Networks
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  • Q & A: 457 Questions and Answers
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Objectives of 300-420 Test

There are various topics that are included in the exam and they are:

  • Automation (10%).
  • The Automation domain includes things like choosing the correct YANG data model taking current requirements into account; differentiating between IETF, Cisco native YANG models, and Openconfig as well as between RESTCONF and NETCONF; understanding the impact of model-drive telemetry, covering on-change and periodic publications; comparing dial-in and dial-out approaches to model-drive telemetry.

  • Advanced Enterprise Campus Networks (25%).
  • This part of the exam content measures one's skills in designing campus networks for high availability and knowledge of techniques for platform abstraction, graceful restart, etc.; designing campus Layer 2 infrastructures and multicampus Layer 3 ones, including route summarization, VRFs, convergence, etc.; describing SD-Access Architecture as well as SD-Access fabric design for wireless and wired access.

  • Enterprise Networks and WAN (20%).
  • This section addresses the following areas: comparison of WAN connectivity options (DWDM, Layer 2 VPN, 4G/5G, Metro Ethernet, etc.); designing site-to-site VPN, including dynamic multipoint VPN, Ipsec, GRE, and others; designing high availability for enterprise WAN (failover, backip connectivity, etc.); Cisco SD-WAN architecture (on-boarding, security, control plane, and more); Cisco SD-WAN design considerations (redundancy, security design, overlay design, and others).

  • Advanced Address and Routing Solutions (25%).
  • This domain mainly focuses on creating structured addressing plans for IPv4 and IPv6; creating scalable, stable, and secure routing designs for IS-IS, EIGRP, OSPF, and BGP, including route filtering, load sharing, address families, path preference attributes, and route reflectors; determining IPv6 migration strategies, involving native, boundaries, and overlay.

  • Network Services (20%).
  • The last domain focuses on the ability to choose proper QoS strategies, designing network management techniques; designing end-to-end QoS policies covering shaping, queuing, marking, and more; describing multicast routing concepts, and creating multicast services, including MSDP, SSM, and PIM bidirectional.

Cisco 300-420: Target audience

The Cisco 300-420 test is designed for Wireless Design Engineers, Network Managers, Network Design Engineers, System Engineers, and Network Administrators. It is targeted at those individuals who want to certify or prove their knowledge and mastery in designing Cisco enterprise networks. The typical candidates for this Cisco certification exam are those people who are looking to be certified in the enterprise networks. They should have at least 3 years of hands-on experience in the field of designing these networks related to Cisco.

Reference: https://www.cisco.com/c/en/us/training-events/training-certifications/exams/current-list/ensld-300-420.html

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Cisco 300-420 Exam Details

As for the exam details, Cisco 300-420 lasts for 90 minutes and it contains many types of questions including fill-in-the-blanks, drag and drop, multiple-choice, and scenario-based. The test is available in English and Japanese. In order to pass the exam, candidates should answer at least 80 to 85% of the items correctly.

Cisco 300-420 Exam Syllabus Topics:

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

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