Instant Download Juniper : JN0-400 Questions & Answers as PDF & Test Engine
Updated: Aug 27, 2026
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Juniper JN0-400 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Layer 2 Switching Technologies | 20% | - Spanning Tree Protocol - Link Aggregation (LAG) - VLANs and trunking - Port security and storm control |
| Topic 2: Networking Fundamentals | 15% | - Ethernet and switching concepts - IPv4/IPv6 addressing and subnetting - Broadcast and collision domains |
| Topic 3: System Monitoring & Maintenance | 10% | - Basic troubleshooting methodology - Show and diagnostic commands - Log and event monitoring |
| Topic 4: Configuration Basics | 20% | - Interface configuration and monitoring - Management access and services - System settings and user management |
| Topic 5: Junos OS Fundamentals | 15% | - Software installation and upgrades - Junos architecture, control/forwarding planes - Routing Engine and Packet Forwarding Engine |
| Topic 6: User Interfaces | 20% | - Configuration hierarchy - CLI modes and navigation - Commit, rollback, and rescue configuration |
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