Exam Code: JN0-343
Exam Name: Juniper Networks Certified Internet Specialist (JNCIS-ENT)
Questions: 498 Q&As
Updated: 2019-02-06
Price: $ 69 / $ 79
Demo: JN0-343 DEMO (Free)


  • Latest Juniper Networks JN0-343 exam dumps PDF.

  • Instant download after purchase!

  • Questions & Answers are based on real exam questions and formatted questions.

  • Best price of the whole network.

  • PDF format can be viewed on any device supports printing.


The latest actual JN0-343 questions and answers from ISLEVER. Everything you need to prepare and get best score at JN0-343 exam easily and quickly. Juniper Networks Certified Internet Specialist (JNCIS-ENT) exam engine covers all the knowledge points of the real Juniper Networks exam.

What do you offer?

We provide JN0-343 examination of learning materials, it can help you quickly master the test points.
Study Mode covers all objectives ensuring topics are covered. Questions are similar to exam questions so you test your knowledge of exam objectives."

The product contains JN0-343 examination common exam questions and answers, covering the real exam content more than 90%.

Product contains labs content?

Yes, Product contains JN0-343 exam Q&As and preparation labs questions.

Do you provide free updates?

We provide the updated version of the JN0-343 exam free, you can download on the website of the member center.

After the purchase, how long can you get?

7/24, after a successful purchase, you will be able to immediately download the product.

Login to the site, in the member center click download product.

What is the product format, I can use in what equipment?

Products using the PDF format, you can browse and learning in PC, IOS, Android and so on any device that supports PDF.

After the purchase, you do not have any restrictions, even, you can print out for learning.

Exam Information
Exam code: JN0-343
Written exam
Administered at Pearson VUE testing centers worldwide
Exam length: 90 minutes
Exam type: 70 multiple-choice questions
Pass/fail status is available immediately
Prerequisite certification: JNCIA-Junos
Acceptable substitutions: JNCIA-ER, JNCIS-ER, JNCIA-EX, JNCIA-M, and JNCIS-M.

Designed for experienced networking professionals with beginner to intermediate knowledge of routing and switching implementations in Junos, this written exam verifies the candidate's basic understanding of routing and switching technologies and related platform configuration and troubleshooting skills.

JNCIS-ENT Exam Objectives (Exam:JN0-343)

Layer 2 Switching and VLANs
Describe the concepts, operation, and functionality of Layer 2 switching for the Junos OS
Enterprise switching platforms
Bridging components
Frame processing
Describe the concepts, benefits, and functionality of VLANs
Native VLANs and voice VLANs
Inter-VLAN routing
Configure, monitor and troubleshoot Layer 2 switching and VLANs
Interfaces and ports
Routed VLAN interfaces (RVI)

Spanning Tree
Describe the concepts, benefits, operation, and functionality of the Spanning Tree Protocol
STP and RSTP concepts
Port roles and states
Convergence and reconvergence
Configure and monitor STP and RSTP

Layer 2 Security
Describe the concepts, benefits and operation of various protection and security features
BPDU, loop and root protection
Port security, including MAC limiting, DHCP snooping, Dynamic ARP inspection (DAI) and IP source guard
Storm control
Describe the concepts, benefits and operation of Layer 2 firewall filtres
Filter types
Processing order
Match criteria and actions
Configure and monitor Layer 2 security
Port security
Storm control
Firewall filter configuration and application

Protocol Independent Routing
Describe the concepts, operation and functionality of various protocol-independent routing components
Static, aggregate, and generated routes
Martian addresses
Routing instances, including RIB groups
Load balancing
Filter-based forwarding
Configure and monitor various protocol-independent routing components
Static, aggregate, and generated routes
Load balancing
Filter-based forwarding

Open Shortest Path First (OSPF)
Explain the concepts, operation and functionality of OSPF
Link-state database
OSPF packet types
Router ID
Adjacencies and neighbors
Designated router (DR) and backup designated router (BDR)
OSPF area and router types
LSA packet types
Configure, monitor and troubleshoot OSPF
Areas, interfaces and neighbors
Additional basic options
Routing policy application
Troubleshooting tools

Intermediate System to Intermediate System (IS-IS)
Explain the concepts, operation and functionality of IS-IS
Link-state database
Adjacencies and neighbors
Levels and areas
Designated intermediate system (DIS)
Configure, monitor and troubleshoot IS-IS
Levels, interfaces and adjacencies
Additional basic options
Routing policy application
Troubleshooting tools

Border Gateway Protocol (BGP)
Explain the concepts, operation and functionality of BGP
BGP basic operation
BGP message types
Route/path selection process
IBGP and EBGP functionality and interaction
Configure and monitor BGP
Groups and peers
Additional basic options
Routing policy application

Describe the concepts, requirements and functionality of IP tunneling
Tunneling applications and considerations
Configure and monitor IP tunnels

High Availability
Describe the concepts, benefits, applications and requirements high availability in a Junos OS environment
Link aggregation groups (LAG)
Redundant trunk groups (RTG)
Virtual Chassis
Graceful restart (GR)
Graceful Routing Engine switchover (GRES)
Nonstop active routing (NSR)
Bidirectional Forwarding Detection (BFD)
Virtual Router Redundancy Protocol (VRRP)
Unified In-Service Software Upgrade (ISSU)
Configure and monitor high availability components
Virtual Chassis