- ENCOR is Cisco's 350-401 exam, the core requirement for CCNP Enterprise certification.
- Infrastructure (30%) and Security (20%) together make up half the blueprint weight.
- The v1.2 blueprint drops wireless objectives and adds Catalyst Center AI workflows under Network Assurance.
- Passing alone earns Cisco Certified Specialist - Enterprise Core; full CCNP Enterprise needs a concentration exam too.
What ENCOR Actually Is
ENCOR stands for Implementing Cisco Enterprise Network Core Technologies, officially numbered 350-401. It is a Cisco-governed, closed-book exam that validates a candidate's ability to design, deploy, secure, and troubleshoot enterprise-scale networks built on Cisco infrastructure. Passing it by itself earns the Cisco Certified Specialist - Enterprise Core credential, but its bigger role is as the mandatory core exam for CCNP Enterprise. It also serves as the qualifying step that lets candidates sit the CCIE Enterprise Infrastructure lab exam.
If you have landed on this page wondering exactly what the letters mean or how the exam fits into Cisco's certification ladder, our companion piece on ENCOR Meaning breaks down the acronym in more depth, and What Does ENCOR Stand For? covers the naming history if you want more context before diving into exam mechanics.
Exam Format and Delivery Details
ENCOR is a 120-minute, computer-based exam delivered either at a Pearson VUE test center or remotely through OnVUE online proctoring. The question format mixes multiple-choice items, drag-and-drop matching, and possible performance-based lab simulations where you configure or troubleshoot a scenario rather than just pick an answer. This variety means memorizing flashcards is not enough; you need hands-on comfort with CLI syntax, topology diagrams, and packet-level reasoning.
The exam is offered in English and Japanese, and there are no formal prerequisites listed by Cisco, so technically anyone can register and sit for it. In practice, most successful candidates already have solid experience with enterprise routing, switching, and security before attempting it. For a realistic gauge of how tough the exam feels in practice, read How Hard Is the ENCOR Exam? Complete Difficulty Guide 2026.
Key Takeaway
Because performance-based items may appear alongside multiple-choice and drag-and-drop questions, build study time around actual configuration practice, not just reading theory.
The Six ENCOR Domains
Cisco organizes the 350-401 blueprint into six weighted domains. Knowing the weight of each domain tells you where to spend your limited study hours, and it explains why some topics deserve deeper review than others.
| Domain | Weight | Focus Area |
|---|---|---|
| Architecture | 15% | Enterprise network design principles |
| Virtualization | 10% | Device and network virtualization |
| Infrastructure | 30% | Routing, switching, WAN technologies |
| Network Assurance | 10% | Monitoring, telemetry, Catalyst Center AI workflows |
| Security | 20% | Network security design and mechanisms |
| Automation and Artificial Intelligence | 15% | Python, REST APIs, JSON, controller-based automation |
Infrastructure and Security together account for half of the entire exam, which is why any serious ENCOR prep plan should lead with those two domains. For a full breakdown of objectives inside each domain, see the ENCOR Exam Domains 2026: Complete Guide to All 6 Content Areas.
Infrastructure (30%)
This is the heaviest domain by far, covering the routing and switching foundation of enterprise networks.
- OSPF and eBGP configuration, path selection, and troubleshooting
- Layer 2/3 switching behavior including VLANs, trunking, and spanning-tree variants
- VRFs for traffic segmentation across the enterprise
- GRE and IPsec tunneling for WAN connectivity
Security (20%)
The second-largest domain, testing your ability to secure network access and control plane resources.
- AAA design using RADIUS and TACACS+
- ACLs for traffic filtering and segmentation
- Control Plane Policing (CoPP) to protect device resources
- Device hardening and secure management practices
Concrete Topics You Must Master
Beyond the domain percentages, certain technical topics show up repeatedly across the ENCOR blueprint regardless of which domain they technically fall under. Candidates should be comfortable with:
- Routing protocols: OSPF and eBGP design, redistribution, and failure scenarios
- Switching fundamentals: VLANs, EtherChannel, spanning-tree, and first-hop redundancy
- Segmentation: VRFs and how they isolate routing tables across departments or tenants
- Tunneling and encryption: GRE and IPsec for secure site-to-site connectivity
- Access control: AAA frameworks, ACLs, and CoPP for protecting network devices
- Automation: Python scripting basics, JSON data structures, and REST API calls against network controllers
- Embedded scripting: Cisco EEM (Embedded Event Manager) for on-device automation
One notable change in the current v1.2 blueprint is that wireless objectives have been removed entirely, while Catalyst Center AI-driven workflows were added under the Network Assurance domain. This shift reflects Cisco's push toward AI-assisted operations inside its DNA Center/Catalyst Center platform rather than dedicated wireless design content. If you studied from older material, double-check that it reflects this version rather than an outdated blueprint.
Who Takes ENCOR and Why
ENCOR attracts network engineers, systems administrators moving into networking-focused roles, and IT professionals aiming to formalize enterprise-level routing, switching, and security skills. Because it is the gateway to CCNP Enterprise, many candidates are motivated less by the standalone Specialist credential and more by what it unlocks: a recognized mid-to-senior networking certification track and eligibility to pursue the CCIE Enterprise Infrastructure lab exam later.
Employers hiring for enterprise network engineer, network administrator, and infrastructure specialist positions often look for CCNP Enterprise on a resume, which means ENCOR is the exam that actually gets tested even though the concentration exam completes the certification. If you're evaluating whether the investment of time and money makes sense for your career, our analysis in Is the ENCOR Certification Worth It? Complete ROI Analysis 2026 and the related ENCOR Jobs overview walk through the practical career angle in more detail.
Registration, Fees, and Retakes
ENCOR costs US$400 plus applicable tax, and Cisco Learning Credits are accepted as payment. You can schedule it at a Pearson VUE test center or take it remotely via OnVUE online proctoring, whichever fits your situation better. For a complete cost breakdown including what else factors into your total investment, see ENCOR Certification Cost 2026: Complete Pricing Breakdown.
There are no formal prerequisites to register, a point covered thoroughly in ENCOR Requirements 2026: Eligibility, Prerequisites & How to Qualify. If you don't pass on the first attempt, Cisco requires a five calendar day wait before you can retest, with the count starting the day after your failed attempt. Plan your retake budget and study revision around that window rather than assuming you can rebook immediately.
Once earned, both the written-exam credit and the certification itself remain valid for three years. You can renew before expiration through eligible exams or through Cisco's Continuing Education program; CE-only renewal requires 40 credits for the Specialist certification or 80 credits for full CCNP Enterprise. Keep in mind that CE renewal does not extend the window Cisco uses for combining exam passes toward a certification. For exact scoring mechanics, check ENCOR Passing Score 2026: Exactly What You Need to Pass, and for scheduling windows and deadlines, see ENCOR Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Key Takeaway
Budget for the possibility of a retake: US$400 plus tax per attempt, with a mandatory five-day wait before rescheduling if you don't pass the first time.
How to Plan Your Study Around the Domains
Given that Infrastructure and Security carry the most weight, a sensible study sequence front-loads those domains while still covering the rest before exam day. Rather than a generic weekly template, structure your revision around the actual point values:
Infrastructure (30%)
- Drill OSPF and eBGP scenarios, including redistribution and failure recovery
- Practice VRF configuration and GRE/IPsec tunnel setup in lab environments
Security (20%)
- Configure AAA with RADIUS/TACACS+, build layered ACLs, and set up CoPP policies
- Review device hardening checklists relevant to enterprise deployments
Architecture and Automation/AI (15% each)
- Study enterprise design models and controller-based architecture
- Practice Python scripts calling REST APIs and parsing JSON responses
Virtualization and Network Assurance (10% each)
- Review device/network virtualization concepts and EEM scripting
- Study Catalyst Center AI workflows and telemetry-based monitoring
This sequencing puts the heaviest-weighted domains first while you have the most energy and time, then finishes with lighter-weighted but still testable material. For a more detailed week-by-week plan with resource recommendations, see the ENCOR Study Guide 2026: How to Pass on Your First Attempt. You can also validate your readiness across all six domains using timed practice exams on our ENCOR practice test platform before booking your real attempt.
If you're still deciding whether this specific credential fits your goals, browsing broader overviews like ENCOR Certification or What Is ENCOR Certification? can help you see how the Specialist badge and CCNP Enterprise path connect. And once you're deep into preparation, a condensed reference like the ENCOR Cheat Sheet 2026: One-Page Review of Must-Know Facts is useful for last-minute review sessions.
Frequently Asked Questions
No. Passing ENCOR alone earns Cisco Certified Specialist - Enterprise Core. Full CCNP Enterprise certification requires ENCOR plus one CCNP Enterprise concentration exam.
No formal prerequisites exist. Anyone can register for the 350-401 exam, though most candidates have prior networking experience before attempting it.
No, the current v1.2 blueprint excludes wireless objectives. It instead includes Catalyst Center AI workflows under the Network Assurance domain.
Both the written-exam credit and the resulting certification are valid for three years, renewable through eligible exams or Continuing Education credits before expiration.
You must wait five calendar days before retesting, with the count starting the day after your failed attempt, then pay the exam fee again to reschedule.