Short on study time before your JN0-343 exam? The 565 practice questions from Actual4Exams focus on the objectives that matter most in the Juniper Networks Certified Internet Specialist (JNCIS-ENT) test, so every review session counts. Download the PDF and turn spare minutes into real progress.
Juniper JN0-343 Exam Overview:
| Certification Vendor: | Juniper Networks |
|---|---|
| Exam Name: | Enterprise Routing and Switching, Specialist (JNCIS-ENT) |
| Exam Number: | JN0-343 |
| Real Exam Qty: | 65-80 |
| Passing Score: | 65% |
| Exam Price: | $300 USD |
| Exam Duration: | 105 minutes |
| Available Languages: | English |
| Related Certifications: | JNCIA-Junos JNCIE-ENT JNCIP-ENT |
| Certificate Validity Period: | 2 years |
| Exam Format: | Multiple choice, Scenario-based questions |
| Recommended Training: | Junos Intermediate Routing (JIR) Junos Enterprise Switching (JEX) |
| Exam Registration: | Pearson VUE Registration Juniper Certification Portal |
| Sample Questions: |  |
| Exam Way: | Proctored exam delivered via Pearson VUE; available online or at test centers |
| Pre Condition: | Recommended: JNCIA-Junos certification or equivalent knowledge |
| Official Syllabus URL: | https://www.juniper.net/us/en/training/certification/tracks/enterprise-routing-switching/jncis-ent.html |
Juniper JN0-343 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Protocol Independent Routing | 15% | - Static routing and aggregate routes - Routing policy and firewall filters - Routing table and route preference |
| Topic 2: Tunnels and High Availability | 10% | - BFD and virtual chassis - VRRP, GRES, NSR, graceful restart - IPsec and GRE tunnels |
| Topic 3: Layer 2 Switching and VLANs | 20% | - Switching concepts and frame processing - Inter-VLAN routing and IRB interfaces - VLANs, trunking, native VLAN, voice VLAN - Configuration, monitoring and troubleshooting |
| Topic 4: OSPF | 15% | - Adjacency formation and DR/BDR election - Concepts, areas, router types, LSAs - Configuration, monitoring and troubleshooting |
| Topic 5: IS-IS | 10% | - Adjacencies and link-state databases - Configuration and verification - Concepts, levels, NET addresses |
| Topic 6: Layer 2 Security | 15% | - DHCP snooping, DAI, IP source guard - Port security and MAC limiting - Storm control and Layer 2 firewall filters |
| Topic 7: BGP | 10% | - Configuration and policy application - Concepts, peering, attributes, path selection - IBGP vs EBGP and route advertisement |
| Topic 8: Spanning Tree Protocols | 15% | - Configuration and troubleshooting - Protection features: BPDU, loop, root protection - STP, RSTP concepts and operation - Port roles, states and BPDU handling |
Common Questions About the Juniper JN0-343 Exam
The JN0-343 exam, officially known as Juniper Networks Certified Internet Specialist (JNCIS-ENT), is the Juniper test that leads to the Juniper Networks Certified Internet Specialist (JNCIS-ENT) certification at the Specialist level. Passing it validates the skills employers expect from a certified professional. It is also associated with related credentials such as JNCIA-Junos, JNCIP-ENT, JNCIE-ENT.
The JN0-343 exam contains 65-80 questions, and you have 105 minutes to complete them. Work out your per-question pace before test day, and flag slow items instead of stalling on them — time pressure, not knowledge, sinks many first attempts. Timed mock exams in the Actual4Exams test engines are the most reliable way to build that rhythm.
The passing score for the JN0-343 exam is 65%, and the official registration fee is $300 USD. If you miss the mark, a retake means paying the full fee again, so book your seat only when you are ready. A practical benchmark: score consistently above the passing line on timed practice tests before scheduling the real exam.
Recommended: JNCIA-Junos certification or equivalent knowledge
Entry requirements can change, so confirm the latest conditions on the official exam page: https://www.juniper.net/us/en/training/certification/tracks/enterprise-routing-switching/jncis-ent.html.
You can book the JN0-343 exam through the official registration channels below:
Exam delivery: Proctored exam delivered via Pearson VUE; available online or at test centers. Seats at popular test centers fill quickly, so schedule early once your preparation is on track.
Juniper recommends the following training options for Juniper Networks Certified Internet Specialist (JNCIS-ENT) candidates:
Pair any course with the 565 practice questions from Actual4Exams to measure how ready you really are before paying the exam fee.
Yes. A free PDF demo of the Juniper Networks Certified Internet Specialist (JNCIS-ENT) questions is available, so you can check the question style and answer quality before you pay. Every purchase also includes 365 days of free updates, and if the product expires you can renew the update service at a 50% discount from your member zone.
If you take the corresponding JN0-343 exam within 60 days of purchase and do not pass, you can apply for a full refund under the 100% Money Back Guarantee: submit a scan of your enrollment slip and your official Score Report (PDF) within 2 days of the exam date, and the claim is processed within 7 days. Attempts made within 3 days of purchase, downloads without an actual exam attempt, free materials, and expired orders are not eligible, and the candidate name must match the payer name. Prefer new material instead of a refund? You can exchange your purchase for two free products of equal value and keep the update service on your original product. As for delivery, the files are available for instant download and are also emailed to you within one minute of payment — if nothing arrives within 2 hours, contact customer service. There is no limit on how many computers you can install the product on.
The official Juniper Networks Certified Internet Specialist (JNCIS-ENT) outline is organized into 8 domains. The first three are:
- Layer 2 Security — 15% of the exam
- BGP — 10% of the exam
- Layer 2 Switching and VLANs — 20% of the exam
See the complete exam topics section above for the full outline and the weighting of every domain.
Juniper Networks Certified Internet Specialist (JNCIS-ENT) Sample Questions:
What is the purpose of the storm control feature on EX Series switches?
- A. to protect against a flood of OSPF routing updates
- B. to facilitate Routing Engine (RE) failover in cases where the primary RE is overloaded
- C. to filter traffic based on fields in the IP header
- D. to prevent network outages caused by broadcast storms on the LAN
Explanation: Only visible for Actual4Exams members. You can sign-up / login (it's free).
Which two port security features are dependent on the DHCP snooping database? (Choose two.)
- A. dynamic ARP inspection
- B. IP source guard
- C. MAC limiting
- D. storm control
What are two valid BPDU types? (Choose two.)
- A. root bridge
- B. configuration change
- C. topology change notification
- D. configuration
Which two common scenarios will prevent an IS-IS adjacency from forming? (Choose two.)
- A. There are mismatched Level 2 areas.
- B. An IP address is not configured on the lo0 interface.
- C. There are mismatched Level 1 areas.
- D. The interface MTU value is set lower than 1492.
-- Exhibit - -- Exhibit -
Which statement describes what is happening in the exhibit?
- A. A redistribution policy is defined under the [edit policy-options] hierarchy and applied to router R3 under the [edit protocols ospf] hierarchy.
- B. A redistribution policy is not properly configured.
- C. A redistribution policy is inherited by router R3.
- D. A firewall policy is defined under the [edit policy-options] hierarchy and applied to router R3 under the [edit protocols ospf] hierarchy.
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