- ENCOR (350-401) is a 120-minute, closed-book Cisco exam delivered at Pearson VUE centers or via OnVUE.
- Infrastructure (30%) and Security (20%) carry the most weight - prioritize these two domains first.
- The v1.2 blueprint drops wireless objectives and adds Catalyst Center AI workflows under Network Assurance.
- Passing ENCOR earns Cisco Certified Specialist - Enterprise Core and satisfies the CCNP Enterprise core requirement.
What Is the ENCOR Certification?
Implementing Cisco Enterprise Network Core Technologies (350-401), commonly shortened to ENCOR, is Cisco's core exam for enterprise networking. It validates the ability to plan, deploy, secure, and troubleshoot modern enterprise infrastructure spanning routing, switching, virtualization, security, and automation. If you're still mapping out exactly what this credential covers and how it differs from adjacent Cisco tracks, our What Is ENCOR? guide and the companion breakdown of the ENCOR Meaning are good starting points before you dive into the technical weeds below.
Passing ENCOR earns the Cisco Certified Specialist - Enterprise Core credential on its own, and it also serves as the mandatory core exam for the CCNP Enterprise certification. Beyond that, a passing ENCOR score qualifies candidates to sit the CCIE Enterprise Infrastructure lab exam, making it a pivot point for both associate-to-professional progression and expert-track eligibility. There are no formal prerequisites - Cisco does not require you to hold any prior certification before registering.
Exam Format, Fees, and Registration
ENCOR is a closed-book, computer-based exam built from multiple-choice questions, drag-and-drop items, and possible performance-based lab simulations. You have 120 minutes to complete it, and it's offered in English and Japanese. You can sit the exam at a Pearson VUE test center or remotely through OnVUE online proctoring, whichever fits your schedule and comfort level with remote exam monitoring.
The exam fee is US$400 plus applicable tax, and Cisco Learning Credits are accepted as a payment method if your employer funds training through that program. For a full line-item look at what you'll actually spend once you factor in study materials, retakes, and optional training, see our ENCOR Certification Cost breakdown. If you're unsure whether you meet the requirements before you pay, the ENCOR Requirements guide confirms there's no mandatory prerequisite - just realistic readiness.
Key Takeaway
Because there's no prerequisite gate, the real barrier to passing ENCOR is content mastery, not eligibility. Budget your prep time accordingly rather than assuming registration hurdles will slow you down.
The Six ENCOR Domains
The current blueprint is version 1.2, and it organizes content into six weighted domains. Understanding the weighting is critical because it tells you where to invest study hours - a candidate who spends equal time on all six domains is misallocating effort relative to how the exam is actually built.
| Domain | Weight | Core Focus |
|---|---|---|
| Architecture | 15% | Enterprise network design principles, models |
| Virtualization | 10% | Device and network virtualization concepts |
| Infrastructure | 30% | Routing, switching, wired connectivity |
| Network Assurance | 10% | Monitoring tools, Catalyst Center AI workflows |
| Security | 20% | Network security controls, AAA, segmentation |
| Automation and AI | 15% | Programmability, APIs, scripting |
Infrastructure (30%)
This is the single largest domain and covers the day-to-day mechanics of running an enterprise network.
- OSPF and eBGP configuration, path selection, and troubleshooting
- Layer 2/3 switching behavior, EtherChannel, and spanning-tree considerations
- VRFs and GRE/IPsec tunneling for segmented and secure transport
Security (20%)
The second-heaviest domain focuses on protecting the control plane and enforcing access policy across the enterprise.
- AAA design and implementation
- ACLs for traffic filtering and segmentation
- Control Plane Policing (CoPP) to protect device resources
Automation and Artificial Intelligence (15%)
This domain has grown in relevance as Cisco pushes programmability into everyday network operations.
- Python scripting fundamentals for network tasks
- JSON data structures and REST API interactions
- Embedded Event Manager (EEM) for on-box automation
Notably, the v1.2 blueprint excludes wireless objectives entirely, and it folds Catalyst Center AI workflows into the Network Assurance domain - a meaningful shift for anyone studying from older materials. For a full domain-by-domain walkthrough with subtopics, our ENCOR Exam Domains Guide goes deeper into each area than we can cover here.
Who Hires ENCOR-Certified Engineers
ENCOR sits at the heart of enterprise network engineering roles: network engineers, network administrators moving into more senior infrastructure work, and pre-sales or support engineers who need to demonstrate command of routing, switching, security, and automation in a single credential. Because it's also the gateway exam for CCNP Enterprise, employers hiring for CCNP-level roles frequently list ENCOR (or the full CCNP) as a screening criterion in job postings. If you're evaluating whether this certification actually moves the needle for your career, the Is ENCOR Certification Worth It? analysis and the ENCOR Salary Guide both dig into that question in more detail than a single section here can. You can also browse current openings that reference the credential directly on our ENCOR Jobs page.
Certification Validity, Renewal, and Retakes
Both the Cisco Certified Specialist - Enterprise Core credential and written-exam credit toward CCNP Enterprise are valid for three years from the date you pass. To renew before expiration, you can pass an eligible exam again or accumulate Continuing Education (CE) credits. If you choose the CE-only path, you'll need 40 credits to renew a Specialist-level certification or 80 credits if you're renewing at the CCNP level. One nuance worth flagging: CE credits do not extend the window you have for combining multiple exam passes toward a certification - the clock on that combination period keeps running regardless of CE activity.
If you don't pass on your first attempt, Cisco enforces a waiting period before you can retest: five calendar days, starting the day after your attempt. That means you can't rebook for the very next day, so plan your retake budget and study gap accordingly. For a deeper look at how tough the exam is in practice and what typically trips candidates up, see How Hard Is the ENCOR Exam? and the data-driven ENCOR Pass Rate article.
Key Takeaway
If you fail, don't panic-book a retake for the earliest possible slot. Use the mandatory five-day gap productively to review the domains that felt weakest, then schedule with a buffer for real improvement.
A Domain-Weighted Study Approach
Generic study techniques like spaced repetition or timed review blocks only help if they're pointed at the right material. Given that Infrastructure and Security together account for half the exam's weight, your study calendar should reflect that imbalance rather than splitting time evenly across six domains.
Infrastructure Deep Dive
- OSPF and eBGP labs, VRF configuration, GRE/IPsec tunnels
Security Controls
- AAA setups, ACL policy design, CoPP tuning
Architecture and Virtualization
- Enterprise design models and virtualization concepts
Automation, AI, and Assurance
- Python, JSON, REST APIs, EEM, Catalyst Center AI workflows
Repetition through practice questions matters just as much as reading theory, especially given the mix of multiple-choice, drag-and-drop, and performance-based items on the real exam. Rotating through structured ENCOR practice test sessions alongside your labs helps you get used to the question formats before exam day, and reviewing missed 350-401 practice questions is often more revealing than re-reading a textbook chapter. For a structured week-by-week plan that goes beyond this summary, check out our full ENCOR Study Guide, and if you want the condensed version for last-minute review, the ENCOR Cheat Sheet consolidates must-know facts onto a single page.
Where ENCOR Fits in Your Career Path
Passing ENCOR isn't the finish line for CCNP Enterprise - it's the shared foundation. After clearing ENCOR, you'll still need to pass a concentration exam matched to your specialty (for example, a track focused on SD-WAN, automation, or enterprise design) to complete the full CCNP Enterprise certification. ENCOR knowledge also directly underpins the CCIE Enterprise Infrastructure lab exam, so engineers aiming for expert-level certification should treat their ENCOR prep as the first serious investment in that longer journey, not a one-off milestone.
Before you register, it's worth confirming exact testing windows and any scheduling constraints through Pearson VUE - our ENCOR Exam Dates guide walks through how testing windows and deadlines actually work. And if you want a refresher on the passing threshold itself, the ENCOR Passing Score article explains how Cisco's scaled scoring works without relying on invented percentages.
FAQ
No. ENCOR has no formal prerequisites, so you can register and sit the exam regardless of prior Cisco certifications.
No. The v1.2 blueprint excludes wireless objectives entirely, so focus your study time on Architecture, Virtualization, Infrastructure, Network Assurance, Security, and Automation and AI instead.
Both the Cisco Certified Specialist - Enterprise Core credential and written-exam credit are valid for three years, after which you must renew through an eligible exam or Continuing Education credits.
Yes. ENCOR is available through OnVUE online proctoring in addition to in-person delivery at Pearson VUE test centers.
You must wait five calendar days, starting the day after your attempt, before you're eligible to retest.