Juniper JN0-343 Exam Details & Actual Exam Questions
- Exam Code/Number: JN0-343
- Exam Name/Title: Juniper Networks Certified Internet Specialist (JNCIS-ENT)
- Certification Provider: Juniper
- Corresponding Certification: JNCIS
- Exam Questions: 565
- Updated On: Jul,14 2026
- Certification Level: Specialist
Juniper Networks Certified Internet Specialist (JNCIS-ENT) Exam Questions
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(33 Up Votes)Juniper JN0-343 Exam Overview:
| Certification Vendor: | Juniper Networks |
| Exam Name: | Juniper Networks Certified Internet Specialist (JNCIS-ENT) |
| Exam Number: | JN0-343 |
| Related Certifications: | Juniper Networks Certified Associate – Junos (JNCIA-Junos) Juniper Networks Certified Professional – Enterprise Routing and Switching (JNCIP-ENT) |
| Certificate Validity Period: | 2 years |
| Available Languages: | English |
| Real Exam Qty: | 80 |
| Exam Duration: | 105 minutes |
| Exam Format: | Multiple Choice |
| Sample Questions: | Juniper JN0-343 Sample Questions |
| Exam Way: | Delivered via Pearson VUE (onsite or online proctored, multiple-choice written exam) |
| Pre Condition: | Juniper Networks Certified Associate – Junos (JNCIA-Junos) or equivalent networking knowledge |
Juniper JN0-343 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Layer 2 Switching and VLANs | - VLAN tagging, inter-VLAN routing and voice VLANs - Bridging components and frame processing |
| Topic 2: Routing Protocols – OSPF and IS-IS | - OSPF areas, neighbors and operations - IS-IS PDUs, adjacencies and metrics |
| Topic 3: Spanning Tree Protocols | - STP and RSTP concepts and operations - Port roles, states and convergence |
| Topic 4: Protocol-Independent Routing | - Static, aggregate and generated routes - Filter-based forwarding and load balancing |
| Topic 5: Layer 2 Security | - Storm control and MACsec - BPDU, loop/root protection and port security |
| Topic 6: High Availability | - Link Aggregation/Redundant Trunk Groups (LAG/RTG) - VRRP, NSR, GRES and ISSU concepts |
| Topic 7: Tunnels | - Configuration and troubleshooting of tunnels - GRE, IP-IP tunneling |
| Topic 8: Border Gateway Protocol (BGP) | - BGP message types and attributes - Route selection and peer relationships |
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