Instant Download Juniper : JN0-400 Questions & Answers as PDF & Test Engine
Updated: Jul 20, 2026
No. of Questions: 120 Questions & Answers with Testing Engine
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Juniper JN0-400 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| System Monitoring & Maintenance | 10% | - Basic troubleshooting methodology - Log and event monitoring - Show and diagnostic commands |
| Layer 2 Switching Technologies | 20% | - VLANs and trunking - Port security and storm control - Spanning Tree Protocol - Link Aggregation (LAG) |
| Junos OS Fundamentals | 15% | - Routing Engine and Packet Forwarding Engine - Software installation and upgrades - Junos architecture, control/forwarding planes |
| User Interfaces | 20% | - Configuration hierarchy - CLI modes and navigation - Commit, rollback, and rescue configuration |
| Configuration Basics | 20% | - Management access and services - Interface configuration and monitoring - System settings and user management |
| Networking Fundamentals | 15% | - IPv4/IPv6 addressing and subnetting - Broadcast and collision domains - Ethernet and switching concepts |
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