Data Center Design, Specialist (JNCDS-DC)

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The Design track enables you to demonstrate competence with Juniper Networks design principles and associated technologies. JNCDS-DC, one of the specialist-level certifications in this track, is designed for networking professionals and designers with intermediate knowledge of data center network design, theory, and best practices. The written exam verifies your understanding of data center network design principles.

This track includes four certifications:

  • JNCDA: Design, Associate. For details, see JNCDA.
  • JNCDS-DC: Data Center Design, Specialist. For details, see the sections below.
  • JNCDS-SP: Service Provider Design, Specialist. For details, see JNCDS-SP.
  • JNCDS-SEC: Security Design, Specialist. For details, see JNCDS-SEC.

Exam Preparation

We recommend the following resources to help you prepare for your exam. However, these resources aren't required, and using them doesn't guarantee you'll pass the exam.

Exam Resources

Additional Preparation

Exam Objectives

Here’s a high-level view of the skillset required to successfully complete the JNCDS-DC certification exam.

Exam Objective


Data Center Design Considerations

Describe the concepts of data center design

  • Physical considerations including placement, cabling, power, heating, and cooling
  • Access switch placement
  • Traditional multi-tiered design
  • Management
  • Automation
  • Data center monitoring
  • Virtual Chassis
  • Data center support and serviceability

IP Fabric Architecture

Describe the design considerations of a data center IP fabric

  • Layer 3 underlay networking
  • Layer 3 overlay networking
  • Layer 3 control plane options

Data Center Interconnect

Describe the design considerations for interconnecting data centers

  • MPLS
  • Layer 3 VPNs
  • EVPN

Data Center Security

Describe the design considerations for securing the data center

  • Micro-perimeterization
  • Micro-segmentation
  • Virtual routers
  • Firewalls
  • Security automation
  • Device sprawl
  • Data classification
  • Zero trust security
  • Risk management

Virtualization in the Data Center

Describe the design considerations for virtualization in the data center

  • NFV/containers
  • ETSI standards
  • Virtualization security
  • SDN

Traffic Prioritization in the Data Center

Describe the design considerations for traffic prioritization in the data center

  • QoS
  • CoS
  • DCB

High Availability in the Data Center

Describe the design considerations for high availability in the data center

  • Business continuity
  • Device-level high availability features
  • Intra-DC high availability
  • Inter-DC high availability

Exam Details

Exam questions are derived from the recommended training and the exam resources listed above. Pass/fail status is available immediately after taking the exam. The exam is only provided in English.

Exam Code


Prerequisite Certification

Delivered by

Exam Length

90 minutes

Exam Type

Written exam, plus 65 multiple-choice questions


Juniper certifications are valid for three years. For more information, see Recertification.