About the Exam

This retired written exam belonged to the Juniper Networks Certified Specialist, Data Center Design track. It was intended for network professionals and designers with intermediate knowledge of data center network design, theory, and best practices. Passing demonstrated understanding of data center network design principles.

Exam Topics

  • Considerações de Design do Data Center0–20%
  • Arquitetura de Malha IP0–20%
  • Interconexão de data center0–20%
  • Segurança de data center0–20%
  • Virtualização no Data Center0–10%
  • Priorização de Tráfego no Data Center0–10%
  • Alta Disponibilidade no Data center0–20%

How to Use This Practice Exam

  1. Browse — Read each question, select your answer, and reveal the explanation.
  2. Exam Mode — Simulate real exam conditions with a timed session and score report.
  3. Learn Mode — Spaced repetition schedules questions you struggle with for long-term retention.

Download the Full Exam PDF

Get every question and answer in a clean, printable PDF built for offline study. Purchase once, keep permanent access, and re-download the latest version anytime.

Last updated July 15, 2026 at 4:05 AM

Topic filter
Retired questions
Question sort

QuestionQ1

Considerações de Design do Data Center

You are asked to provide a data center design proposal. The customer wants every rack to be managed as one unit with the shortest possible cable lengths.

Which deployment model meets these requirements?

  • A top of rack
  • B middle of rack
  • C middle of row
  • D end of row
Explanation

A top-of-rack deployment installs switching equipment in each individual rack. This makes each rack a self-contained management unit and keeps server-to-switch cabling as short as possible.

Community Discussion

No comments yet. Be the first to start the discussion!

QuestionQ2

Alta Disponibilidade no Data center

A data center uses a Virtual Chassis Fabric. The ToR switches have 48 ports, and each rack supports 20 servers. Each server has two ports configured as a LAG.

You need to provide link-level redundancy, but cannot use two ports on the same device for that redundancy.

Which connection type should you use to complete this task?

  • A MC-LAG
  • B RTG
  • C LAG
  • D ESI
Explanation

A LAG in a Virtual Chassis Fabric can include member links located on different member switches. Connecting each server’s two LAG links to separate ToR switches therefore preserves connectivity if either a link or one ToR switch fails, while the fabric operates as one logical device.

Learn more

Community Discussion

No comments yet. Be the first to start the discussion!

QuestionQ3

Arquitetura de Malha IP

You are designing a Junos-based Ethernet Fabric for a data center that includes a combination of 60 EX Series and QFX Series devices.

Which solution would you select in this scenario?

  • A Junos Fusion Provider Edge
  • B Virtual Chassis
  • C Junos Fusion Data Center
  • D Virtual Chassis Fabric
Explanation

Junos Fusion Data Center provides a data-center fabric architecture that supports a combination of up to 64 supported QFX and EX top-of-rack satellite devices, with QFX10000 switches in the spine layer. A 60-device mixed EX/QFX deployment therefore fits its supported scale and intended use.

Learn more

Community Discussion

No comments yet. Be the first to start the discussion!

QuestionQ4

Arquitetura de Malha IP

You are designing an IP fabric that uses EBGP.

In this scenario, which two ASN-scheme designs can be used for the IP fabric?

Choose two
  • A Assign the same ASN to all devices.
  • B Assign the ASN to all leaf devices and a separate ASN to all spine devices.
  • C Assign a unique ASN to each individual device.
  • D Assign the same ASN used by the WAN service provider to the spine devices.
Explanation

Valid eBGP fabric ASN plans include assigning a unique ASN to each device and assigning one ASN to all leaf devices with a separate ASN for all spine devices. In both designs, every leaf-to-spine adjacency has different ASNs, so it is an eBGP session. A single ASN on every device would instead form iBGP sessions.

Learn more

Community Discussion

No comments yet. Be the first to start the discussion!

QuestionQ5

Considerações de Design do Data Center

Which two statements concerning heating and cooling design are correct?

Choose two
  • A All devices in a rack should be installed so that the port panels are on the same regardless of the air flow direction.
  • B All devices in a rack should be installed so that the air flow is in the same direction regardless of the port panel location.
  • C In the hot-aisle/cold-aisle design, air enters through vents in the hot-aisle and exists through cold-aisle vents.
  • D The hot-aisle/cold-aisle design maximizes the cooling potential of the air conditioning system.
Explanation

Equipment should be installed so that its airflow is consistently directed from the cold aisle to the hot aisle, irrespective of port-panel location. Hot-aisle/cold-aisle layouts separate supply and exhaust air: cooled air enters equipment from the cold aisle and heated air is exhausted into the hot aisle. This separation reduces hot-and-cold air mixing and makes more effective use of the cooling system’s capacity.

Learn more

Community Discussion

No comments yet. Be the first to start the discussion!
Know a question that should be here? Contribute to this exam
Back home