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A Juniper Networks Certified Design Specialist, Data Center (JNCDS-DC) credential carries weight because Juniper sets the standards employers trust. Fast2test helps you earn it with 65 expert-written JN0-1300 practice questions, reviewed and refreshed for 2026.

Juniper JN0-1300 Exam Overview:

Certification Vendor:Juniper Networks
Exam Name:Juniper Networks Certified Design Specialist, Data Center (JNCDS-DC)
Exam Number:JN0-1300
Real Exam Qty:65
Passing Score:Variable / Not publicly disclosed
Available Languages:English
Exam Duration:90 minutes
Related Certifications:JNCDS-CLOUD
JNCDS-ENT
JNCDS-SP
JNCDA
Certificate Validity Period:3 years
Exam Price:$300 USD
Exam Format:Scenario-based questions, Multiple choice, Written exam
Recommended Training:JNCDS-DC Official Study Guide
Designing Juniper Data Center Networks
Exam Registration:Pearson VUE Registration
Juniper Certification Portal
Sample Questions:Juniper JN0-1300 Sample Questions
Exam Way:Delivered via Pearson VUE; in-person test centers or online proctored
Pre Condition:JNCDA certification recommended; strong knowledge of data center networking and Juniper solutions
Official Syllabus URL:https://www.juniper.net/us/en/training/certification/tracks/design/jncds-dc.html

Juniper JN0-1300 Exam Syllabus Topics:

SectionWeightObjectives
High Availability & Traffic Engineering10%- Intra-DC and inter-DC HA
  • 1. Graceful Restart
  • 2. BFD
- QoS and CoS
  • 1. DCB
  • 2. Traffic prioritization
Data Center Interconnect15%- VPN services
  • 1. L3VPN
  • 2. EVPN-VXLAN
- Inter-site connectivity
- MPLS technologies
IP Fabric Architecture20%- Control plane options
- Layer 3 underlay networks
  • 1. OSPF
  • 2. BGP
- Overlay networking
  • 1. EVPN
  • 2. VXLAN
Ethernet Fabric Architectures15%- Virtual Chassis
- Virtual Chassis Fabric
- Fusion architecture
Data Center Design Considerations15%- Management and automation
  • 1. Serviceability
  • 2. Monitoring
- Architectural models
  • 1. Spine-leaf
  • 2. Traditional multi-tier
- Physical design aspects
  • 1. Placement, cabling, power, cooling
Data Center Security15%- Security services
  • 1. Security automation
  • 2. Firewalls
- Micro-segmentation
- Zero trust architecture
Virtualization in the Data Center10%- NFV and containers
- SDN integration
- Virtualization security

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

The JN0-1300 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 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 JNCDA, JNCDS-SP, JNCDS-ENT, JNCDS-CLOUD.

The Juniper Networks Certified Design Specialist, Data Center (JNCDS-DC) exam gives you 90 minutes to work through 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 Variable / Not publicly disclosed to pass, and the official registration fee is $300 USD. 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.

JNCDA certification recommended; strong knowledge of data center networking and Juniper solutions Eligibility rules can change over time, so before you register, confirm the latest requirements on the official exam page: Juniper Networks JN0-1300 exam overview.

You can book your JN0-1300 exam through any of these official registration channels:

The exam is delivered as Delivered via Pearson VUE; in-person test centers or online proctored, 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 JN0-1300 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.

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The Juniper Networks Certified Design Specialist, Data Center (JNCDS-DC) syllabus is organized into 7 domains. The main areas include Data Center Interconnect (15%), Data Center Security (15%), and Virtualization in the Data Center (10%). 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:

A customer has multiple concerns about the effect that overloading their upstream links will have on their networking devices.
In this situation, which two problems will VOQ minimize? (Choose two.)

  • A. forward pressure
  • B. back pressure
  • C. head-of-line blocking
  • D. error handling
Reveal Solution  Discussion  0

Correct Answer: B,C  🗳️

The Junos Fusion architecture is comprised of which two components? (Choose two.)

  • A. node devices
  • B. satellite devices
  • C. interconnect devices
  • D. aggregation devices
Reveal Solution  Discussion  0

Correct Answer: B,D  🗳️

Explanation: Only visible for Fast2test members. You can sign-up / login (it's free).

A customer's data center is built with a QFX3000-G composed of four QFX3008-I Interconnects, four QFX5100-48S nodes in the network Node group, and 20 QFX5100-48S nodes spread in 10 redundant server Node groups. There are host systems (FCoE clients) scattered everywhere throughout the data center.
In this scenario, where should the FCoE-to-FC gateway(s) be placed?

  • A. QFX3500s must be placed external to the QFX3000-G to provide an external FC-to-FCoE gateway.
  • B. Every Node which has FCoE client servers must become its own FC-to-FCoE gateway to provide a distributed FC-to-FCoE gateway.
  • C. QFX3500s must be placed into the network Node group to provide a centralized FC-to-FCoE gateway.
  • D. QFX3500s must be placed directly attached to the QFX3008-I Interconnects as a new Fibre Channel Nodegroupto provide a centralized FC-to-FCoE gateway.
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

What are three advantages of VCF? (Choose three.)

  • A. VCF supports PoE.
  • B. VCF leaf devices are directly connected to each spine device andofferlocal switching.
  • C. VCF supports a mix of 1GbE, 10GbE, and 40GbE port speeds on the leaf devices.
  • D. VCF has a single point of administration.
  • E. VCF supports FC SAN multihop.
Reveal Solution  Discussion  0

Correct Answer: B,C,D  🗳️

Explanation: Only visible for Fast2test members. You can sign-up / login (it's free).

You are designing a new data center and have been asked to provide a layout and plan to handle data center cooling.
In this scenario, which two statements are correct? (Choose two.)

  • A. You should alternate between hot and cold aisles in your design.
  • B. You are required to deliver cold air through the floor while hot air leaves though the ceiling.
  • C. Cooling efficiency affects the amount of power consumed in your data center.
  • D. You are required to have the same number of hot and cold aisles in your design.
Reveal Solution  Discussion  0

Correct Answer: A,C  🗳️

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