ENSLD 300-420
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ExploreAbout this exam
The CCNP Enterprise certification page on Cisco.com describes the CCNP Enterprise as the professional-level certification track within Cisco's Enterprise certification family. The ENSLD 300-420 exam, commonly called Designing Cisco Enterprise Networks, is one of the concentration exams associated with that track. This page is an independent study resource for candidates preparing for ENSLD 300-420. It is not affiliated with, endorsed by, or sponsored by Cisco, and it does not reproduce any commercial question bank. The exam is aimed at network engineers and network designers who already hold a professional-level foundation and want to demonstrate design skills rather than configuration skills. ENSLD-style design work spans network design fundamentals, campus and branch design, WAN and SD-WAN design, and automation and assurance in design. Note that the retrieved Cisco page is a general CCNP Enterprise overview and does not list ENSLD 300-420 exam logistics such as question count, duration, passing score, fee, retake rules, or validity period; those values are shown as unknown on this page and flagged for review rather than guessed. Preparation should combine design methodology study with hands-on practice in a lab, plus review of Cisco design guidance for campus, WAN, and automation. Verify all exam logistics on Cisco's official exam page before scheduling.
What you'll study
About ENSLD 300-420 preparation
What is ENSLD 300-420?
ENSLD 300-420, also written as Designing Cisco Enterprise Networks, is a Cisco concentration exam in the Enterprise certification track. It focuses on network design decisions rather than device configuration. The Cisco CCNP Enterprise overview page confirms the certification track exists but does not list ENSLD exam logistics, so confirm details on Cisco's exam page.
How many questions are on the exam and how long is it?
That information is not available in the source this page is grounded on. The retrieved Cisco CCNP Enterprise overview page does not state question counts or duration for ENSLD 300-420. Those fields are intentionally left blank here and flagged for review. Check Cisco's official exam topics page for current figures.
What score do I need to pass, and what does the exam cost?
This page does not state a passing score or exam fee because the retrieved Cisco source does not include them. Do not rely on remembered figures; Cisco revises exam details over time. Confirm the current passing score and price on Cisco's official exam listing or through the certification scheduling portal before you book.
How difficult is ENSLD compared with other Enterprise exams?
Candidates generally find design exams harder than configuration exams because answers depend on requirements and trade-offs rather than a single correct command. Expect scenario-based questions where several options are technically valid but only one best fits stated constraints such as scale, resiliency, and cost.
What should I study first?
Start with network design fundamentals: hierarchical campus models, addressing and summarization, and requirement gathering. Then move to campus and branch design, followed by WAN and SD-WAN design. Finish with automation and assurance, since those topics build on the design decisions made earlier.
Why are the domain weights on this page marked provisional?
The domain list is a placeholder pending review. The retrieved Cisco CCNP Enterprise page is a certification overview and does not enumerate ENSLD 300-420 domains or their percentages. We show an even split and flag it rather than invent weights. Always use Cisco's official exam topics document for authoritative domain percentages.
What are common failure modes on design exams?
Typical mistakes include answering from habit with a familiar design instead of the stated requirements, ignoring constraints such as budget or existing hardware, and overlooking redundancy or scale limits. Read each scenario twice, list the explicit requirements, and eliminate options that violate any one of them.
Can I retake the exam, and how long is the certification valid?
The retrieved Cisco source does not state retake rules or certification validity periods for this exam. Those values are left unset and flagged for review. Cisco publishes retake and recertification policies on its certification pages and in the Continuing Education section, so verify there before planning a retake or renewal.
Is this page affiliated with Cisco?
No. This is an independent study resource and is not affiliated with, endorsed by, or sponsored by Cisco. All questions and explanations here are original. Use Cisco's official exam topics and documentation as the authoritative source for exam scope and logistics.