Cisco 300-420 Real Exam Questions [Jan 2026 Update]

What is the Cisco 300-420 ENSLD Exam, and What Will You Learn from It?

The Cisco 300-420 ENSLD (Designing Cisco Enterprise Networks) exam is a key concentration exam in the CCNP Enterprise certification path. It is designed to validate your ability to design scalable, secure, and resilient enterprise networks.

By earning this certification, you demonstrate advanced skills in enterprise architecture, routing and addressing design, SD-WAN, network services, and automation. The exam helps you build strong expertise to plan and design modern enterprise networks that meet business and technical requirements.

Successfully passing the Cisco 300-420 ENSLD exam also earns you the Cisco Certified Specialist – Enterprise Design credential, showcasing your proficiency in advanced network design.

Exam Snapshot

Prerequisites Before Taking the Cisco 300-420 Exam

There are no strict prerequisites for taking the Cisco 300-420 ENSLD exam. However, Cisco recommends candidates have:

• CCNA-level knowledge of networking concepts.
• Practical experience in enterprise network routing and switching.
• Familiarity with Cisco enterprise architecture, SD-WAN, and network security.
• Basic understanding of network automation and programmability.

Candidates typically pair this exam with the 350-401 ENCOR core exam to achieve the CCNP Enterprise certification.

Main Objectives and Domains You Will Study for Cisco 300-420 ENSLD

The Cisco 300-420 ENSLD exam tests your expertise in designing enterprise-level network architectures.

Topics to Cover in Each Cisco 300-420 Exam Domain

1. Enterprise Network Design (25%)
   • Hierarchical network models and modular design.
   • Layer 2 and Layer 3 design principles.
   • Redundancy, scalability, and resiliency considerations.
   • IPv4/IPv6 addressing and summarization strategies.
2. Advanced Addressing and Routing Solutions (25%)
   • Designing OSPF, EIGRP, and BGP solutions.
   • Route redistribution, filtering, and summarization.
   • Designing for high availability and optimal routing.
   • BGP scalability and peering design.
3. Advanced Enterprise Campus Networks (20%)
   • Campus LAN design (VLANs, Spanning Tree, EtherChannel).
   • QoS design principles and traffic engineering.
   • Wireless LAN integration and performance optimization.
   • Convergence and recovery mechanisms.
4. WAN for Enterprise Networks (15%)
   • SD-WAN architecture and design principles.
   • VPN solutions (MPLS, IPsec, DMVPN).
   • WAN resiliency, QoS, and bandwidth management.
   • Cloud connectivity and hybrid WAN strategies.
5. Network Services and Automation (15%)
   • Network programmability and automation tools.
   • RESTCONF, NETCONF, and YANG models.
   • Cisco DNA Center and SD-Access design.
   • Network telemetry and monitoring design.

Changes in the Latest Version of the Cisco 300-420 Exam

The latest Cisco 300-420 exam was updated to align with current enterprise network technologies. Key updates include:

• Introduction of Cisco DNA Center and SD-Access architecture.
• Expanded coverage of SD-WAN design.
• Inclusion of automation and programmability topics.
• Updated content to reflect IPv6, QoS, and high availability design principles.

Register and Schedule Your Cisco 300-420 Exam

You can schedule your Cisco 300-420 ENSLD exam through Pearson VUE, Cisco’s official testing partner.

Steps to register:

1. Go to the Cisco Pearson VUE Exam Portal.
2. Sign in with your Cisco ID or create a new account.
3. Choose Exam 300-420 ENSLD – Designing Cisco Enterprise Networks.
4. Select your preferred test delivery method, online proctored or in-person.
5. Choose your date, time, and payment option.

Once registered, you’ll receive an email confirmation with your exam details.

Cisco 300-420 Exam Cost, and Can You Get Any Discounts?

Discounts:

Cisco occasionally offers exam vouchers, training bundles, or student discounts through its official learning partners. Members of the Cisco Networking Academy or corporate training programs may also be eligible for reduced pricing.

Boost your readiness with Cisco 300-420 practice questions and timed practice tests from Cert Empire. These help you assess your skills and improve confidence before the actual exam.

Exam Policies You Should Know Before Taking the Cisco 300-420 Exam

Before exam day, review these key policies:

• Retake Policy: You can retake the exam after 5 calendar days.
• Validity: The certification remains valid for 3 years.
• Recertification Options: Retake the exam or earn Continuing Education (CE) credits.
• NDA Agreement: You must accept Cisco’s nondisclosure agreement before the test.

What Can You Expect on Your Cisco 300-420 Exam Day?

On exam day:

• Arrive 30 minutes early if testing in person.
• For online exams, perform a system check before starting.
• Bring valid government-issued ID.
• Expect a combination of multiple-choice, drag-and-drop, and simulation (lab) questions.
• You’ll face realistic design scenarios and network architecture challenges.

Your results appear immediately after submission, with official confirmation on your Cisco account within 24 hours.

Plan Your Cisco 300-420 Study Schedule Effectively with 5 Study Tips

Tip 1: Start with the Cisco official ENSLD exam blueprint and outline your weekly goals.
Tip 2: Use network simulators (like Packet Tracer or GNS3) to visualize design concepts.
Tip 3: Study with Cisco Press materials and apply real-world design use cases.
Tip 4: Strengthen your understanding using Cert Empire’s authentic practice questions and full-length practice tests.
Tip 5: Join Cisco Learning Network forums to discuss design strategies and problem-solving techniques.

Best Study Resources You Can Use to Prepare for Cisco 300-420

• Cisco Official ENSLD Study Guide (Cisco Press)
• Cisco Learning Network Training
• Cisco Design Zone Documentation
• Cisco DNA Center and SD-WAN Design Guides
• Cert Empire practice questions and practice tests
• Online video courses from certified Cisco instructors

These resources provide both the theoretical foundation and practical exposure you need to excel.

Career Opportunities You Can Explore After Earning Cisco 300-420 ENSLD

After earning the Cisco 300-420 ENSLD certification, you’ll be well-positioned for roles such as:

• Enterprise Network Design Engineer
• Network Architect
• Solutions Consultant
• Senior Network Analyst
• Infrastructure Designer

This certification showcases your ability to design enterprise-grade networks, a skill highly valued by organizations around the world.

Certifications to Go for After Completing Cisco 300-420 ENSLD

After completing the 300-420 exam, you can advance your Cisco career path with:

• Cisco CCNP Enterprise (requires passing 350-401 ENCOR + 300-420 ENSLD)
• Cisco CCIE Enterprise Infrastructure
• Cisco DevNet Professional (for network automation specialization)
• Cisco Design Expert (CCDE) for senior-level professionals

How Does Cisco 300-420 Compare to Other Beginner-Level Cloud Certifications?

While cloud certifications like AWS Certified Solutions Architect – Associate or Microsoft Azure Administrator (AZ-104) focus on cloud infrastructure, the Cisco 300-420 ENSLD is centered on enterprise network design, including both on-premises and hybrid architectures.

For professionals specializing in network infrastructure design, the 300-420 ENSLD remains one of the most respected certifications in the industry.

Get ready for your success with high-quality Cisco 300-420 ENSLD practice questions and practice tests from Cert Empire.

Master your design skills, build exam confidence, and achieve your CCNP Enterprise certification with ease.

Why Practice Exam Questions Are Essential for Passing Cisco 300-420 Exam in 2026

Passing the 300-420 certification isn’t about memorizing terms or rot learning, it’s about developing the aptitude required of a network design professional. Loaded with detailed explanations and extensive references, Cert Empire’s 300-420 Exam Questions are designed to help you think like an actual network design engineer. These practice questions mirror the Cisco exam pattern, guiding you through what’s required to pass the exam on your first attempt.

Prepare Smarter with Exam Familiar Quiz

The 300-420 exam is challenging and detailed, but consistent practice transforms that challenge into an opportunity. By solving real exam-style questions regularly, you’ll strengthen your problem-solving speed, recognize question logic, and gain confidence. To explore more preparation resources, you can step into Cert Empire and find helpful materials that make the Cisco exam format feel natural, allowing you to focus more on precision and less on pressure during the exam.

Master Every Domain with Real Exam Logic

The 300-420 practice questions cover every official domain outlined by Cisco, from advanced routing and enterprise design principles to infrastructure security and automation. This ensures your preparation remains balanced and complete, covering both technical design and implementation expertise.

What’s Included in Our 300-420 Exam Prep Material

Cert Empire offers a complete preparation experience, not just a set of questions. Here’s what’s included in our 300-420 study package:

PDF Exam Questions

1. Instant Access: Begin studying right after your purchase with instant delivery.
2. Study Anywhere: Access your questions seamlessly on any device, phone, laptop, or tablet.
3. Printable Format: Print your PDF for offline review and mark important points for deep revision.

Interactive Practice Simulator

1. Question Simulation: Our 300-420 practice simulator replicates the real exam interface, letting you test yourself in an authentic environment.
2. Flashcard-like Practice: Save difficult questions and return to them until you fully understand every concept.
3. Progress Tracking: Continue your preparation from where you left off with built-in tracking for completed sessions and if you’re exploring related paths, you can check all Cisco certifications to see how this exam connects with other Cisco learning tracks.

3 Months of Unlimited Access

Get three months of complete access to all study resources, giving you enough time to review, reattempt, and refine your knowledge before attempting the exam.

Regular Updates

Networking technology evolves rapidly, and Cisco certifications evolve with it. Our 300-420 practice questions are regularly updated by Cisco-certified experts to match the latest exam revisions and networking standards, ensuring full alignment with Cisco’s current syllabus.

Free Practice Tests

To help you evaluate your readiness, Cert Empire provides free 300-420 practice tests. Simply click the free practice test button on the right sidebar to access sample questions reflecting the real exam’s style and difficulty.

Free Exam Guides

Cert Empire also offers free study guides for the 300-420 exam. Our blog section provides extensive resources, from exam structure breakdowns to strategy tips and study plans. These guides are accessible to everyone, no purchase necessary.

Important Note

Our 300-420 Exam Questions are continuously updated to reflect the latest Cisco exam version.

The Cert Empire content team, composed of certified 300-420 experts, incorporates the newest frameworks, enterprise networking models, design methodologies, and automation principles to maintain accuracy.

✔ Each question includes clear reasoning for both correct and incorrect answers, helping you grasp the full concept.
✔ Every explanation links to Cisco’s official documentation, reinforcing authentic learning.
✔ The materials are mobile-friendly and equally accessible across devices and printable formats.

The 300-420 certification remains one of the most recognized credentials in enterprise networking, proving mastery in designing secure, scalable, and efficient enterprise network architectures.