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Updated: Sep 22, 2026
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The JN0-349 certification exam covers a wide range of topics related to enterprise routing and switching technologies. These topics include basic routing and switching concepts, Layer 2 and Layer 3 switching, routing protocols such as OSPF, BGP and IS-IS, network security, and network automation. JN0-349 exam also covers topics related to Juniper Networks Junos operating system, such as system architecture, configuration management, and troubleshooting.
Juniper JN0-349 Exam Overview:
| Certification Vendor: | Juniper Networks |
|---|---|
| Exam Name: | Enterprise Routing and Switching, Specialist (JNCIS-ENT) |
| Exam Number: | JN0-349 |
| Certificate Validity Period: | 3 years |
| Exam Format: | Multiple Select, Multiple Choice |
| Real Exam Qty: | 65 |
| Available Languages: | English |
| Passing Score: | 62% |
| Exam Duration: | 90 minutes |
| Exam Price: | USD $200 |
| Related Certifications: | JNCIA-Junos (JN0-103) JNCIP-ENT (JNP-349) JNCIE-ENT |
| Sample Questions: | Juniper JN0-349 Sample Questions |
| Exam Way: | Pearson VUE testing centers / Online proctored |
| Pre Condition: | JNCIA-Junos (JN0-103) recommended but not required |
| Official Syllabus URL: | https://www.juniper.net/us/en/training/certification/ |
Juniper JN0-349 exam is an essential certification for IT professionals who wish to specialize in enterprise routing and switching. JN0-349 exam tests the skills and knowledge required to implement and manage Juniper Networks technologies and is recognized globally as a benchmark for excellence in network infrastructure technology. Candidates who successfully pass the exam will earn the Juniper Networks Certified Specialist Enterprise Routing and Switching (JNCIS-ENT) certification, which is highly valued by employers seeking skilled IT professionals.
Juniper JN0-349 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: BGP | 15% | - Multihop BGP and route flaps - BGP operations and path selection - BGP configuration (peer groups, route reflection) - BGP attributes and policies |
| Topic 2: Tunneling | 5% | - IPsec tunnels - Tunnel interfaces and configuration - GRE tunnels |
| Topic 3: Class of Service (CoS) | 10% | - Shaping and rewriting rules - Queueing and scheduling - Classification and policing - CoS components and terminology |
| Topic 4: Protocol Independent Routing | 10% | - Aggregate routes - Load balancing and failover - Route filters and routing policies - Static routes |
| Topic 5: High Availability | 10% | - Virtual Chassis Fabric - Virtual Chassis - Nonstop active routing (NSR) - Graceful Routing Engine Switchover (GRES) - In-Service Software Upgrade (ISSU) |
| Topic 6: Layer 2 Security | 8% | - DHCP snooping - Dynamic ARP inspection - Port security features - Layer 2 firewall filtering |
| Topic 7: OSPF | 15% | - OSPF configuration and troubleshooting - OSPF area types (Stub, NSSA, Totally Stub) - OSPF LSA types and LSAs - OSPFv2 operations and adjacencies |
| Topic 8: IP Telephony Features | 5% | - Power over Ethernet (PoE) - LLDP-MED operations - VoIP VLAN configuration |
| Topic 9: Spanning Tree Protocols | 10% | - STP operations (802.1D, 802.1w, 802.1s) - BPDU protection and Root guard - STP configuration and troubleshooting - Loop protection features |
| Topic 10: Layer 2 Switching and VLANs | 12% | - VLAN implementation and configuration - VLAN tagging (802.1Q) - Logical interfaces - Layer 2 switching operations |
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