Juniper Networks · 2026 Edition
A complete preparation guide, edited by Johnson Ajibi, a network and security engineer with 12+ years' experience. Covers the exam format,all 9 blueprint domains, a week-by-week study plan, and proven tips for passing first time.
2–4 months
Prep time
Intermediate
Difficulty
65
Exam questions
Exam code
JNCIS-ENT
Full name
Juniper Networks Enterprise Routing and Switching, Specialist (JNCIS-ENT, JN0-352)
Vendor
Juniper Networks
Duration
90 minutes
Questions
65 items
Domains covered
9 blueprint domains
Recommended experience
Foundational IT knowledge recommended
Typical prep time
2–4 months
Domain percentage weights are not currently available for this exam. The checklist below is still useful for planning your study.
Phase 1
IS IS
Tip: Start with the official IS IS objectives, then practise questions on it.
Phase 2
BGP
Tip: Cover the BGP objectives, then answer practice questions to confirm you can apply them.
Phase 3
Spanning Tree
Tip: Cover the Spanning Tree objectives, then answer practice questions to confirm you can apply them.
Phase 4
OSPF
Tip: Cover the OSPF objectives, then answer practice questions to confirm you can apply them.
Phase 5
High Availability
Tip: Cover the High Availability objectives, then answer practice questions to confirm you can apply them.
Phase 6
Protocol Independent Routing
Tip: Cover the Protocol Independent Routing objectives, then answer practice questions to confirm you can apply them.
Phase 7
Tunnels
Tip: Cover the Tunnels objectives, then answer practice questions to confirm you can apply them.
Phase 8
Layer 2 Switching And VLANs
Tip: Cover the Layer 2 Switching And VLANs objectives, then answer practice questions to confirm you can apply them.
Phase 9
Layer 2 Security
Tip: Finish with Layer 2 Security, then re-test your weakest earlier domain before a mock exam.
Study the official exam blueprint — weight percentages tell you exactly where to invest prep time.
Practise scenario-based questions regularly — every modern cert exam is scenario-heavy.
Use spaced repetition to retain what you've learned (Courseiva does this automatically).
Book your exam date once you're scoring 80%+ consistently on practice tests.
Review explanations for every wrong answer, not just the question — the 'why' is what makes it stick.
Apply everything in this guide with adaptive practice questions, detailed answer explanations, and domain analytics.