Cisco 300-420 : Designing Cisco Enterprise Networks

300-420 real exams

Exam Code: 300-420

Exam Name: Designing Cisco Enterprise Networks

Updated: Sep 18, 2026

Q & A: 457 Questions and Answers

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Cisco 300-420 Exam Topics:

SectionWeightObjectives
Network Services20%-Select appropriate QoS strategies to meet customer requirements (DiffServ, IntServ)
-Design end-to-end QoS policies
  • Classification and marking
  • Shaping
  • Policing
  • Queuing

-Design network management techniques

  • In-band vs. out-of-band
  • Segmented management networks
  • Prioritizing network management traffic

-Describe multicast routing concepts (source trees, shared trees, RPF, rendezvous points)
-Design multicast services (SSM, PIM bidirectional, MSDP)

WAN for Enterprise Networks20%-Compare WAN connectivity options
  • Layer 2 VPN
  • MPLS Layer 3 VPN
  • Metro Ethernet
  • DWDM
  • 4G/5G
  • SD-WAN customer edge

-Design site-to-site VPN

  • Dynamic Multipoint VPN (DMVPN)
  • Layer 2 VPN
  • MPLS Layer 3 VPN
  • IPsec
  • Generic Routing Encapsulation (GRE)
  • Group Encrypted Transport VPN (GET VPN)

-Design high availability for enterprise WAN

  • Single-homed
  • Multihomed
  • Backup connectivity
  • Failover

-Describe Cisco SD-WAN Architecture (orchestration plane, management plane, control plane, data plane, on-boarding and provisioning, security)
-Describe Cisco SD-WAN design considerations (control plane design, overlay design, LAN design, high availability, redundancy, scalability, security design, QoS and multicast over SD-WAN fabric)

Advanced Addressing and Routing Solutions25%-Create structured addressing plans for IPv4 and IPv6
-Create stable, secure, and scalable routing designs for IS-IS
-Create stable, secure, and scalable routing designs for EIGRP
-Create stable, secure, and scalable routing designs for OSPF
-Create stable, secure, and scalable routing designs for BGP
  • Address families
  • Basic route filtering
  • Attributes for path preference
  • Route reflectors
  • Load sharing

-Determine IPv6 migration strategies

  • Overlay (tunneling)
  • Native (dual-stacking)
  • Boundaries (IPv4/IPv6 translations)
Advanced Enterprise Campus Networks25%- Design campus networks for high availability
  • First Hop Redundancy Protocols
  • Platform abstraction techniques
  • Graceful restart
  • BFD

-Design campus Layer 2 infrastructures

  • STP scalability
  • Fast convergence
  • Loop-free technologies
  • PoE and WoL

-Design multicampus Layer 3 infrastructures

  • Convergence
  • Load sharing
  • Route summarization
  • Route filtering
  • VRFs
  • Optimal topologies
  • Redistribution

-Describe SD-Access Architecture (underlay, overlay, control and data plane, automation, wireless, and security)
-Describe SD-Access fabric design considerations for wired and wireless access (overlay, fabric design, control plan design, border design, segmentation, virtual networks, scalability, over the top and fabric for wireless, multicast)

Automation10%- Choose the correct YANG data model set based on requirements
-Differentiate between IETF, Openconfig, and Cisco native YANG models
-Differentiate between NETCONF and RESTCONF
-Describe the impact of model-driven telemetry on the network
  • Periodic publication
  • On-change publication

-Compare dial-in and dial-out approaches to model-driven telemetry

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

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Details of Cisco 300-420 Exam

The Cisco 300-420 exam consists of about 65 questions that have to be answered within the allocated time of 90 minutes. These items can be presented in different formats, including drag and drop, fill-in-the-blank, testlets, and multiple choice. The students are required to achieve the passing score of 750 points out of a total of 1000. This result allows them to get the associated certification. Besides that, the individuals should be ready to pay the fee of $300. After that, they can register and schedule 300-420 ENSLD through Pearson VUE. This platform provides the candidates with two delivery methods. You can choose the in-person variant and sit for the exam at one of the testing centers. On the other hand, you can opt for the online testing and take the exam from the comfort of your home. Those learners who do not complete the test will have a five-day waiting period before their next attempt.

The Cisco 300-420 exam evaluates the skills and knowledge of the candidates of enterprise design, including advanced addressing & routing solutions, WAN, advanced enterprise campus networks, SDA, as well as network & security services. This is a concentration test required for obtaining two certificates, and namely CCNP Enterprise and Cisco Certified Specialist – Enterprise Design. Please note that you also have to pass the core exam, which is Cisco 350-401. After that, you can add these certifications to your CV and demonstrate your expertise in the field of enterprise networking solutions.

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