Great material deserves great service: free demo, instant delivery, a support team you can consult online anytime, 365 days of free updates, and a money back guarantee with published conditions. That full after-sales experience wraps around 66 practice questions for the JN0-421 exam at Test4Cram — your complete Juniper Automation and DevOps, Specialist (JNCIS-DevOps) toolkit.
Juniper JN0-421 Exam Overview:
| Certification Vendor: | Juniper Networks |
|---|---|
| Exam Name: | Juniper Automation and DevOps, Specialist (JNCIS-DevOps) |
| Exam Number: | JN0-421 |
| Related Certifications: | JNCIP-DevOps JNCIA-DevOps |
| Exam Price: | $150 USD |
| Available Languages: | English |
| Exam Duration: | 90 minutes |
| Passing Score: | 65% |
| Exam Format: | Multiple-choice questions |
| Certificate Validity Period: | 3 years |
| Real Exam Qty: | 65 |
| Recommended Training: | Juniper Learning Portal - DevOps Track Introduction to Junos Automation and DevOps (IJAUT) |
| Exam Registration: | Pearson VUE Registration |
| Sample Questions: |  |
| Exam Way: | Onsite at Pearson VUE test centers or online proctored |
| Pre Condition: | Valid JNCIA-DevOps certification |
| Official Syllabus URL: | https://www.juniper.net/us/en/training/certification/tracks/devops/jncis-devops.html |
Juniper JN0-421 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: YANG Models and Data Formats | 15% | - JSON, XML, YAML - OpenConfig - Jinja2 templating - YANG model concepts |
| Topic 2: Python Automation | 20% | - Junos PyEZ library - RPC execution - Configuration management - JSNAPy |
| Topic 3: Junos Automation Scripts | 15% | - Event scripts - Commit scripts - Op scripts - SNMP scripts |
| Topic 4: NETCONF, RESTCONF, and APIs | 20% | - gRPC and gNMI - NETCONF protocol - REST API / RESTCONF - XML API |
| Topic 5: JET and Orchestration Tools | 15% | - Terraform basics - Ansible for Junos - Juniper Extension Toolkit (JET) - Ephemeral configuration |
| Topic 6: Platform Automation Overview | 15% | - JSD-based automation - Telemetry concepts - Junos automation architecture - MGD-based automation |
Juniper JN0-421 Exam: What You Are Wondering, Answered
Delivery first: your download is ready immediately after payment, and an email copy arrives within one minute. If nothing shows up within 2 hours, check spam and contact our support team — and remember, you can install the software on as many computers as you need.
On outcomes: if you sit the JN0-421 exam within 60 days of purchase and do not pass, the Test4Cram money back guarantee covers you. File the claim within 2 days of the exam with a scanned enrollment slip and the official score report (PDF), and it is processed within 7 days. The candidate name must match the payer name; the policy excludes exams taken within 3 days of purchase, purchases never used in an actual exam attempt, free materials, and expired orders. Rather than a refund, you may instead exchange the product for two free exam packages of equal value and keep the update service on your original purchase.
Valid JNCIA-DevOps certification
Vendor criteria change over time, so before committing to an exam date, confirm the current requirements on the official Juniper exam page.
Yes. Test4Cram publishes a free PDF demo of the JN0-421 practice questions — the same quality, the same verified answers as the full product — so your decision is based on evidence. After purchase, 365 days of free updates are included, and an expired product's update service renews at a 50% discount from your member zone.
You will answer 65 questions within 90 minutes on the JN0-421 exam. That is a deliberate pace with little slack, which is why untimed practice only gets you halfway. Use the Test4Cram desktop or online test engine for full-length timed mocks, learn to flag-and-return instead of digging in, and arrive with a pacing rhythm you have already proven.
Registration for the Juniper Automation and DevOps, Specialist (JNCIS-DevOps) runs through the official channels below:
One detail for scheduling: the JN0-421 exam is delivered Onsite at Pearson VUE test centers or online proctored — choose accordingly when you book.
The Juniper Automation and DevOps, Specialist (JNCIS-DevOps) syllabus spans 6 domains, starting with NETCONF, RESTCONF, and APIs (20%), Python Automation (20%), and YANG Models and Data Formats (15%). The full weighted outline is in the syllabus section above — read it before you allocate a single study hour.
The JN0-421 exam — full name Automation and DevOps, Specialist (JNCIS-DevOps) — is Juniper's own measure of whether you can work with its technologies at a professional standard. Passing awards the Automation and DevOps, Specialist (JNCIS-DevOps) certification, a credential at the Specialist level. For anyone making an informed career move, that vendor-backed proof is the kind of signal that shortens interviews. It also connects to JNCIA-DevOps, JNCIP-DevOps as natural next steps.
Passing the JN0-421 exam requires 65%, and official registration costs $150 USD. That fee buys one attempt only — a retake is billed again in full, no exceptions. The economical play is to rehearse first: drill 66 practice questions at Test4Cram under timed conditions until the passing mark sits comfortably behind you, then register.
Juniper recommends these training resources for the Juniper Automation and DevOps, Specialist (JNCIS-DevOps):
Courses supply the knowledge; repetition under exam conditions supplies the readiness. Pair either option with 66 practice questions from Test4Cram and your preparation covers both.
Juniper Automation and DevOps, Specialist (JNCIS-DevOps) Sample Questions:
Which YAML document represents a valid mapping (dictionary) of sequences (lists)?
- A. Option A
- B. Option D
- C. Option B
- D. Option C
Correct Answer: D 🗳️
The <rpc-reply> XML tag is a member of which NETCONF protocol layer?
- A. Operations
- B. Messages
- C. Content
- D. Transport
Correct Answer: D 🗳️
Explanation: Only visible for Test4Cram members. You can sign-up / login (it's free).
You are asked by your manager to automatically switch traffic from the primary link to the backup link on the MX Series device at the branch site whenever latency is above 300 ms over a 5-minute period.
Which type of Junos script would you use in this scenario?
- A. SNMP
- B. Commit
- C. Op
- D. Event
Correct Answer: D 🗳️
What is correctly formatted JSON string?
- A. Option A
- B. Option D
- C. Option B
- D. Option C
Correct Answer: A 🗳️
Click the Exhibit button.
Exhibit:
You are using RubyEZ to interact with a Junos device: however, you are not successfully connecting to the device.
Referring to the exhibit, what is the problem?
- A. A Junos::Ez::Provider statement is missing before the Netconf::SSH. New statement
- B. Argument passed to Netconf:: SSH.new statement must be referenced as variables
- C. Netconf::SSH.new statement arguments must be hashes
- D. Netconf::SSH.new statement only expects an IP address of the target device
Correct Answer: B 🗳️
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