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From the free demo to instant delivery, from 365 days of updates to a money-back guarantee, Fast2test covers every step of your Juniper Networks Certified Design Specialist, Data Center (JNCDS-DC) journey in 2026. Pick your JN0-1301 package, work through 65 expert-verified questions, and book your exam with confidence.

Juniper JN0-1301 Exam Overview:

Certification Vendor:Juniper Networks
Exam Name:JNCDS-DC: Juniper Networks Certified Design Specialist, Data Center
Exam Number:JN0-1301
Exam Price:USD 300 (varies by region)
Exam Duration:90 minutes
Certificate Validity Period:3 years
Real Exam Qty:Approximately 65
Available Languages:English
Related Certifications:Juniper Networks Certified Specialist, Data Center (JNCIS-DC)
Juniper Networks Certified Design Specialist (JNCDS)
Passing Score:Approximately 65–70%
Exam Format:Multiple Choice, Multiple Response
Recommended Training:Juniper Data Center Design Training
Juniper Learning Portal
Exam Registration:Juniper Certification Portal
Pearson VUE Juniper Exams
Sample Questions:Juniper JN0-1301 Sample Questions
Exam Way:Proctored exam (online or test center-based delivery via Pearson VUE)
Pre Condition:Recommended experience with data center networking concepts; Juniper JNCIS-DC or equivalent knowledge is strongly suggested.
Official Syllabus URL:https://www.juniper.net/us/en/training/certification.html

Juniper JN0-1301 Exam Syllabus Topics:

SectionObjectives
Layer 2 and Layer 3 Design- EVPN-VXLAN architecture
  • 1. Overlay and underlay concepts
    • 2. MAC/IP distribution and control plane behavior
      - Routing design
      • 1. BGP in data center fabrics
        • 2. OSPF and underlay routing strategies
          Data Center Interconnect (DCI)- Inter-fabric connectivity
          • 1. Layer 3 DCI design patterns
            • 2. Layer 2 extension considerations
              High Availability and Resiliency- Failure domains and redundancy
              • 1. Link, device, and site redundancy
                • 2. Convergence and failover behavior
                  Automation and Operational Considerations- Network automation in data center design
                  • 1. Configuration consistency and scaling
                    • 2. Intent-based networking concepts
                      Data Center Architecture Design- Spine-Leaf (Clos) architecture principles
                      • 1. Layered data center design models
                        • 2. Scalability and redundancy considerations
                          - Data center design requirements
                          • 1. Capacity and performance planning
                            • 2. Availability and resiliency planning

                              Your Juniper Networks Certified Design Specialist, Data Center (JNCDS-DC) Questions, Answered

                              The JN0-1301 exam, officially titled Juniper Networks Certified Design Specialist, Data Center (JNCDS-DC), is the qualifying test for the Juniper Networks Certified Design Specialist, Data Center (JNCDS-DC) certification from Juniper Networks, a credential at the Specialist level. Passing it proves you have the skills employers look for in certified professionals, and it can also support progress toward related credentials such as Juniper Networks Certified Specialist, Data Center (JNCIS-DC), Juniper Networks Certified Design Specialist (JNCDS).

                              The Juniper Networks Certified Design Specialist, Data Center (JNCDS-DC) exam gives you 90 minutes to work through Approximately 65 questions. That is a steady pace with little room for second-guessing, so train yourself to read each question once, flag the difficult ones, and keep moving. Before exam day, sit at least two full timed sessions in the Fast2test test engine — when the clock feels familiar, it stops being a threat.

                              You need Approximately 65–70% to pass, and the official registration fee is USD 300 (varies by region). Fall short and you pay that fee in full again for every retake, which makes solid preparation the cheaper option by far. Work through the Fast2test practice questions until you score comfortably above the passing mark, then book your seat.

                              Recommended experience with data center networking concepts; Juniper JNCIS-DC or equivalent knowledge is strongly suggested. Eligibility rules can change over time, so before you register, confirm the latest requirements on the official exam page: Juniper Networks JN0-1301 exam overview.

                              You can book your JN0-1301 exam through any of these official registration channels:

                              The exam is delivered as Proctored exam (online or test center-based delivery via Pearson VUE), so you can pick the option that fits your schedule when you book.

                              Juniper Networks recommends the following training for Juniper Networks Certified Design Specialist, Data Center (JNCDS-DC) candidates:

                              Pair that training with the 65 practice questions from Fast2test and you can check your readiness topic by topic before exam day.

                              Yes. Fast2test offers a free PDF demo for the Juniper Networks Certified Design Specialist, Data Center (JNCDS-DC) exam so you can judge the quality of our questions and answers before paying anything. Every purchase also comes with 365 days of free updates, and once that period expires you can extend your update service at a 50% discount.

                              Your purchase is protected by a 100% money-back guarantee. If you sit the corresponding JN0-1301 exam within 60 days of buying and do not pass, send us a scan of your exam enrollment slip together with your official Score Report (PDF) within 2 days of the exam date — the candidate name must match the payer's name — and we will process your full refund within 7 days. Please note that exams taken within 3 days of purchase, materials downloaded without ever sitting the exam, free products, and expired orders are not covered. If you would rather not have a refund, you can exchange your order for two exam products of equal value, free of charge, and keep the update service on your original purchase.

                              Delivery is instant: your files are emailed to you within one minute of payment and can also be downloaded directly, with no limit on the number of computers you install them on. If nothing has arrived within 2 hours, contact our customer service team and we will sort it out.

                              The Juniper Networks Certified Design Specialist, Data Center (JNCDS-DC) syllabus is organized into 5 domains. The main areas include Data Center Interconnect (DCI), Data Center Architecture Design, and Automation and Operational Considerations. Scroll up to the Exam Topics section above for the complete, current outline before you plan your study schedule.

                              Juniper Networks Certified Design Specialist, Data Center (JNCDS-DC) Sample Questions:

                              Question 1

                              Which two characteristics describe the deployment of high-density chassis switches in a data center? (Choose two.)

                              A. In EoR deployments, the switches are consolidated in one location.
                              B. The switches consume a great deal of power, cooling, and space.
                              C. More switches are often needed to accommodate the number of server connections.
                              D. In ToR deployments, the switches provide more port connections, but with lower speeds.


                              Question 2

                              Which two statements describe the Contrail vRouter? (Choose two.)

                              A. It provides the logically centralized control plane and management plane of the system.
                              B. It extends the network form physical routers and switches into an overlay network hosted in virtual server.
                              C. It is forwarding plane that runs software on a virtualized server.
                              D. It is responsible for providing the management, control, and analytics functions of the virtualized network.


                              Question 3

                              Your data center uses an Ethernet fabric solution for the infrastructure switches.
                              You must design a redundancy solution that addresses how the servers connect to the members of the Ethernet fabric. Which two statements are true in this scenario? (Choose two.)

                              A. You should connect each server to two different members.
                              B. It is not necessary to use MC-LAG.
                              C. It is necessary to use MC-LAG.
                              D. You should connect each server to one member with a two-interface LAG.


                              Question 4

                              Which two statements are true about IP fabrics? (Choose two.)

                              A. IP-based applications do not require an overlay network to maintain connectivity.
                              B. IP fabrics can natively support both Layer 2 and Layer 3 applications.
                              C. Applications that require Layer 2 adjacencies require an overlay network to maintain connectivity.
                              D. Applications that require security needs an overlay to provide the security.


                              Question 5

                              Click the Exhibit button.

                              You are creating a resilient IP fabric for a data center based on a Clos architecture.
                              Referring to the exhibit, which statement is true?

                              A. Additional physical links between spine 1 and spine 2 and between spine 3 and spine 4 must be added for resiliency.
                              B. A physical link must be added between spine 2 and spine 3 and between spine 1 and spine 4.
                              C. The physical links between spine 1 and spine 2 and between spine 3 and spine 4 must be removed.
                              D. No physical links need to be added or removed.


                              Solutions:

                              Question 1
                              Answer: B,C
                              Question 2
                              Answer: C,D
                              Question 3
                              Answer: A,B
                              Question 4
                              Answer: B,C
                              Question 5
                              Answer: C

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