Data Center Professional

Here you have the best Juniper JN0-680 practice exam questions

  • You have 64 total questions across 13 pages (5 per page)
  • These questions were last updated on March 30, 2026
  • This site is not affiliated with or endorsed by Juniper.
Question 1 of 64

Which EVPN service consists of a single broadcast domain per EVPN instance?

Answer

Suggested Answer

The suggested answer is B.

Reference:
https://tools.ietf.org/html/draft-ietf-l2vpn-evpn-08#section-6.1
Question 2 of 64

You are implementing a Virtual Chassis using QFX5100s and EX4300s in your data center.

In this scenario, which two statements are correct? (Choose two.)

Answer

Suggested Answer

The suggested answer is C, D.

Reference:
https://www.juniper.net/documentation/en_US/junos/topics/concept/virtual-chassis-ex-qfx-series-mixed-understanding.html
(EX4300s are only line
cards, QFX5100 can be line card).
Reference:
https://www.juniper.net/documentation/en_US/junos/topics/concept/virtual-chassis-ex4300-virtual-chassis-understanding.html
(Supports 40GE VCPs)
Question 3 of 64

A customer notices that all traffic is traveling over a single link within their partially meshed IP Fabric using IBGP. While troubleshooting, the customer notices that the configuration is missing a configuration parameter.

Which parameter would the customer use to solve this problem?

Answer

Suggested Answer

The suggested answer is C.

Reference:
https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/add-path-edit-protocols-bgp.html
Question 4 of 64

Exam JN0-680: Question 4 - Image 1

A customer has a 3-stage Clos architecture with three spine devices as shown in the exhibit.If a single spine device fails, what percentage of the remaining bandwidth will be available from leaf node to leaf node?

Answer

Suggested Answer

The suggested answer is D.

Leaf-to-leaf communication has 3 paths via each Spine node; lose 1 Spine, lose 1 path, i.e. 33%
Question 5 of 64

Exam JN0-680: Question 5 - Image 1

Referring to the exhibit, which hardware change would be made to the IP Fabric to ensure an exact 4:1 oversubscription ratio?

Answer

Suggested Answer

The suggested answer is D.

Leaf = 480 Gbps southbound, 80 Gbps northbound; 480/80 = 6:1
Add a spine and northbound capacity is 120 Gbps; 480/120 = 4:1
Reference:
http://www.brocade.com/content/html/en/solution-design-guide/brocade-dc-fabric-architectures-sdg/GUID-A0E2AF7F-C47A-458D-989A-
35EC97E262DD.html

About the Juniper JN0-680 Certification Exam

About the Exam

The Juniper JN0-680 (Data Center Professional) validates your knowledge and skills. Passing demonstrates proficiency and can boost your career prospects in the field.

How to Prepare

Work through all 64 practice questions across 13 pages. Focus on understanding the reasoning behind each answer rather than memorizing responses to be ready for any variation on the real exam.

Why Practice Exams?

Practice exams help you familiarize yourself with the question format, manage your time, and reduce anxiety on the test day. Our JN0-680 questions are regularly updated to reflect the latest exam objectives.