ENSLD: Designing Cisco Enterprise Networks (300-420)
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Exam Resources
Official learning paths, exam details, skills measured, and community resources to supplement your study.
About the ENSLD Exam
Design advanced enterprise networks — addressing and routing, campus, WAN, services, and automation
Conquer the CCNP Enterprise ENSLD concentration with 250 original practice questions covering advanced addressing and routing design (structured IPv4/IPv6 addressing plans, and stable, secure, and scalable IS-IS, EIGRP, OSPF, and BGP designs, plus IPv6 migration strategies), advanced enterprise campus networks (high availability with FHRP, StackWise/VSS, graceful restart, and BFD; Layer 2 with STP scalability, loop-free technologies, and Layer 2 security; multicampus Layer 3; and SD-Access architecture and fabric design), WAN for enterprise networks (MPLS Layer 3 VPN, Metro Ethernet, and DWDM connectivity; DMVPN, IPsec, and GET VPN site-to-site design; WAN high availability; and Cisco SD-WAN architecture and design), network services (DiffServ and IntServ QoS strategy, end-to-end QoS policy, network management design, and multicast with PIM, SSM, and MSDP), and automation and artificial intelligence (IETF/OpenConfig/Cisco YANG, NETCONF/RESTCONF, model-driven telemetry, gRPC/gNMI, and cloud connectivity and service models). Built to exam topics v1.1 (refreshed July 2025). Original practice questions.
Who Should Take This Exam?
The ENSLD is designed for experienced professionals seeking network design validation. It is a CCNP Enterprise concentration (paired with the ENCOR 350-401 core) and also earns the standalone Cisco Certified Specialist – Enterprise Design credential. 3-5 years of enterprise networking experience, with a design focus, is recommended.
Typical study time: 8-12 weeks of intensive study
Exam Quick Facts
| Detail | Value |
|---|---|
| Exam Code | ENSLD (300-420) |
| Title | Designing Cisco Enterprise Networks |
| Duration | 90 minutes |
| Questions | ~55-65 |
| Pass Score | Variable (Cisco does not publish a fixed cut score) |
| Cost | $300 USD |
| Provider | Pearson VUE |
| Validity | 3 years |
| Question Types | Multiple choice, Multiple select, Drag-and-drop |
Exam Domains & Weights
The ENSLD exam covers 5 domains. Focus your study time based on the weights below — higher-weighted domains have more exam questions.
| Domain | Weight | Practice Qs |
|---|---|---|
| Advanced Addressing and Routing Solutions | 25% | 63 |
| Advanced Enterprise Campus Networks | 25% | 62 |
| WAN for Enterprise Networks | 20% | 50 |
| Network Services | 20% | 50 |
| Automation and Artificial Intelligence | 10% | 25 |
| Total | 100% | 250 |
💡 Study tip: Addressing/Routing design and Campus design are tied for the most weight (25% each) — master structured addressing for clean summarization, scalable IGP/BGP design, and SD-Access architecture first. Automation and Artificial Intelligence (10%) is the smallest block but is the v1.1 refresh’s newest content — know YANG model flavors, NETCONF vs RESTCONF, and model-driven telemetry.
Practice Exam — 250 Questions
Prepare for the ENSLD with our 250-question practice exam covering all 5 exam domains. Every question is an original real-world scenario in which a network architect evaluates design options and trade-offs to build stable, secure, and scalable networks on Cisco IOS/IOS-XE, Cisco SD-Access, and Cisco SD-WAN, with detailed explanations mapped to official exam objectives.
What you get:
- ✅ Exam simulation mode with timer
- ✅ Spaced repetition for weak areas
- ✅ Detailed explanations for every question
- ✅ Progress tracking across domains
- ✅ 20 free questions — no account needed
Cisco Certification Path
Cisco certs follow: Entry (CCT) → Associate (CCNA) → Professional (CCNP) → Expert (CCIE). ENSLD is a CCNP Enterprise concentration; pair it with the ENCOR 350-401 core to earn CCNP Enterprise, and it independently earns the Cisco Certified Specialist – Enterprise Design credential.
Related Cisco Certifications
If you’re studying for the ENSLD, you might also be interested in these Cisco certifications:
- ENCOR: Cisco CCNP ENCOR (350-401) — 250 practice questions
- ENARSI: Cisco CCNP ENARSI (300-410) — 250 practice questions
- ENSDWI: Cisco CCNP ENSDWI (300-415) — 250 practice questions
- ENAUTO: Implementing Cisco Enterprise Network Automation (300-435) — 250 practice questions
- CCNA: Cisco Certified Network Associate (200-301) — 250 practice questions
Study Tips
- Think like a designer, not an operator — ENSLD tests design decisions and trade-offs; for each option ask which one meets the stated scale, availability, and security constraints, not which command to type
- Master addressing for summarization — clean hierarchical IPv4/IPv6 addressing is the foundation for scalable routing design across the whole exam
- Use our practice exam — try the 20 free questions first to gauge your readiness
- Review explanations — don’t just check if you got it right; read why each design is correct and why the alternatives fall short
- Simulate exam conditions — use the timed exam mode to practice under pressure