JN0-421

Juniper JN0-421 - Study Material - Automation and DevOps-Specialist (JNCIS-DevOps)

Automation and DevOps Specialist candidates for Juniper's JNCIS credential encounter Junos OS fundamentals, Junos routing fundamentals, network fundamentals, and Junos security fundamentals here.

· Updated November 9, 2026
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November 9, 2026

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Automation and DevOps-Specialist (JNCIS-DevOps) FAQ's

Introduction of Juniper JN0-421 Exam!

The Juniper JN0-421 exam is a certification exam for Juniper's Automation and DevOps, Specialist (JNCIS-Devops) certification. It is designed to test the knowledge and skills of individuals interested in automating and managing Juniper Networks solutions. The exam covers topics such as Junos automation, automation architecture, automation tools and frameworks, Python scripting, and DevOps principles and practices.

What is the Duration of Juniper JN0-421 Exam?

The Juniper JN0-421 exam is a 90-minute exam consisting of 65 multiple-choice questions.

What are the Number of Questions Asked in Juniper JN0-421 Exam?

There are 60 questions in the Juniper JN0-421 exam.

What is the Passing Score for Juniper JN0-421 Exam?

The passing score required for the Juniper JN0-421 exam is 70%.

What is the Competency Level required for Juniper JN0-421 Exam?

The Juniper JN0-421 exam requires a Professional level of competency, which requires a minimum of two years of networking experience.

What is the Question Format of Juniper JN0-421 Exam?

The Juniper JN0-421 exam consists of 65 multiple-choice questions. Each question has four possible answers, and only one answer is correct.

How Can You Take Juniper JN0-421 Exam?

The Juniper JN0-421 exam can be taken online or in a testing center. The online exam is proctored and monitored by a third-party proctoring service, while the testing center exam is administered by a certified proctor. Both versions of the exam are administered using the same exam content and time limits.

What Language Juniper JN0-421 Exam is Offered?

The Juniper JN0-421 exam is offered in English.

What is the Cost of Juniper JN0-421 Exam?

The Juniper JN0-421 exam costs $199 USD.

What is the Target Audience of Juniper JN0-421 Exam?

The target audience of the Juniper JN0-421 exam is networking professionals who have experience with Juniper Networks products and technologies, including Junos OS, Junos Space, and Junos Security. It is designed for those who want to demonstrate their knowledge and skills in configuring, monitoring, and troubleshooting Juniper Networks products and technologies.

What is the Average Salary of Juniper JN0-421 Certified in the Market?

The average salary of Automation and DevOps-Specialist (JNCIS-DevOps) certified professionals varies widely by role, region, and experience, because it depends on the job the certification is combined with. Check current listings in your market for an up-to-date figure.

Who are the Testing Providers of Juniper JN0-421 Exam?

The Juniper JN0-421 exam is provided by Pearson VUE, an online testing provider. Pearson VUE offers a wide range of exams, including the Juniper JN0-421 exam. To register for the exam, you will need to create an account on the Pearson VUE website and purchase a voucher for the exam. Once you have purchased the voucher, you can schedule your exam online.

What is the Recommended Experience for Juniper JN0-421 Exam?

The recommended experience for the Juniper JN0-421 exam is to have a minimum of one year of experience with Juniper Networks Junos OS and Juniper Networks security technologies. Additionally, it is recommended to have a basic understanding of networking technologies, routing protocols, and security concepts.

What are the Prerequisites of Juniper JN0-421 Exam?

The prerequisite for the Juniper JN0-421 exam is to have a valid Juniper Networks Certified Internet Associate (JNCIA) certification. This certification is a prerequisite for all Juniper certification exams.

What is the Expected Retirement Date of Juniper JN0-421 Exam?

The official website for Juniper JN0-421 exam does not provide any information on the expected retirement date. However, you can check the exam's expiration date on the official Juniper Networks website.

What is the Difficulty Level of Juniper JN0-421 Exam?

The difficulty level of the Juniper JN0-421 exam is considered to be moderate.

What is the Roadmap / Track of Juniper JN0-421 Exam?

The certification roadmap for the Juniper JN0-421 exam consists of the following steps: 1. Complete the Juniper Networks Certified Internet Associate (JNCIA-Junos) exam (JN0-102). 2. Complete the Juniper Networks Certified Internet Professional (JNCIP-Junos) exam (JN0-661). 3. Complete the Juniper Networks Certified Internet Specialist (JNCIS-SEC) exam (JN0-421). 4. Complete the Juniper Networks Certified Internet Expert (JNCIE-SEC) exam (JN0-634).

What are the Topics Juniper JN0-421 Exam Covers?

The Juniper JN0-421 exam covers the following topics: 1. Network Fundamentals: This topic covers the basic principles of network design, including network topologies, addressing and routing protocols, and network security. 2. Junos OS Fundamentals: This topic covers the fundamentals of the Junos operating system, including its architecture and key components. 3. Junos Routing Fundamentals: This topic covers the basics of Junos routing, including static and dynamic routing protocols, routing policy, and routing tables. 4. Junos Security Fundamentals: This topic covers the fundamentals of Junos security, including security policies, firewall filters, and authentication. 5. Junos Automation and DevOps Fundamentals: This topic covers the fundamentals of Junos automation and DevOps, including automation tools, scripting languages, and APIs. 6. Junos Troubleshooting Fundamentals: This topic covers

What are the Sample Questions of Juniper JN0-421 Exam?

1. What is the purpose of the Junos OS command “show route”? 2. What is the purpose of the Junos OS command “show interfaces”? 3. What is the purpose of the Junos OS command “show configuration”? 4. What is the purpose of the Junos OS command “show chassis hardware”? 5. How can you configure a static route in Junos OS? 6. What is the purpose of routing policy in Junos OS? 7. How can you monitor the performance of a Junos OS device? 8. How can you configure a firewall filter in Junos OS? 9. What is the purpose of the Junos OS command “show system processes”? 10. What is the purpose of the Junos OS command “show route protocol”?

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