Cisco 300-420 Exam Questions : Designing Cisco Enterprise Networks

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WAN for Enterprise Networks

This topic focuses on 20% of the overall content and validates the applicants’ competence in the following areas:

• Comparing the connectivity options for WAN, including MPLS L3 VPN, L2 VPN, 4G/5G, DWDM, Metro Ethernet, and SD-WAN customer edge;
• Explaining the architecture for Cisco SD-WAN, including management plane orchestration plan, data plane, security, control plane, provisioning, and on-boarding;
• Designing high availability for enterprise WAN, covering failover, multihomed, backup connectivity, as well as single-homed;
• Explaining the design considerations for Cisco SD-WAN (LAN design, control plane design, overlay design, scalability, redundancy, high availability, security design, multicast & QoS over the SD-WAN fabric).
• Designing site-to-site VPN, such as DMVPN, MPLS L3 VPN, L2 VPN, IPsec, GET VPN & GRE;

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Cisco 300-420 Exam Certification Details:

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

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Exam Policies for 300-420

There are some policies that one should know before going for the Cisco 300-420 exam. They will give you a clear idea as to the official requirements for those who can earn the certificates:

• Finally, adults of age 18 and above can appear for the exams with no need for any permissions.
• Children under the age of 13 cannot apply for Cisco certifications even if they manage to get their parents' approval.
• Secondly, candidates between the ages of 13 and 17 are minors and must have prior consent from their parents or guardians to earn this certification.

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 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.
• 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).
• 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.
• 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.

Cisco 300-420 Exam Syllabus Topics: