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Juniper JN0-643 Questions & Answers
JN0-643 Questions & Answers
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Exam Code: JN0-643

Exam Name: Juniper Networks Certified Professional Enterprise Routing and Switching (JNCIP-ENT)

Vendor: Juniper

No of Questions: 221

Last Updated: October 25, 2016

Certs Covered: JNCIP-ENT

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Introduction:

Professionals with Juniper certification are able to design and implement efficient and effective enterprise networks. This is an advance level certification and tests the candidate’s expertise in working with Juniper Networks, that is, Junos OS. The Juniper JN0 643 exam, also known as Enterprise Routing and Switching Professional (JNCIP-ENT), exhibits a professional’s ability to understand and develop necessary skills to work with Juniper switching, routing, troubleshooting and other advanced networking concepts.

Exam description:

Why is this exam required?

The JN0-643 exam is not only suitable for individuals who are seeking job in the related field, but also for those experts who are already employed.  This certification gives recognition in the marketplace and provides further learning opportunities. This exam is appropriate for advance level professionals who are experienced in working with routers and switches in the Junos networking environment. The following job roles are available in completion of this certification:

-          Enterprise Routing and Switching Professional

-          Network Engineers

-          Network Administrators

Associated exam:

Candidates are required to have knowledge and experience in understanding and implementing routing and switching technologies. The Juniper Network Certification has three levels, and JN0 643 or JNCIP-ENT is the mid-level exam. The entry level certification is JNCIS-ENT and the expert or advanced level certification is JNCIE-ENT.

Pre requisites:

There is no such prerequisite to attend the exam Juniper JN0 643. But as it is an advanced level course, the candidates are recommended to take the JNCIS-ENT exam before attending the JN0643 exam. It is also recommended that candidates must have experience in working with routers and switches in a Junos networking environment. The certification will remain valid for two years.

Objectives of the exam:

The exam is divided into 7 divisions, each division carrying different weights. A summary of these topics is given below:

- OSPF

Topics covered in this section are: concepts and descriptions of OSPFv2 and OSPFv3, OSPF LSA types, DR/BDR operation, SPF algorithm, Metrics, Overload, Virtual links, etc.

- BGP

This section tests the candidate’s knowledge in understanding the concepts, features and operation of BGP, BGP route selection process, Next hop resolution, concept and operation of BGP attributes, BGP communities, Load balancing, etc.

- IP Multicast

This section tests the candidate’s knowledge in understanding the concepts, features and operation of IP multicast, components of IP multicast, IP multicast traffic flow, Any-Source Multicast (ASM) vs. Source-Specific Multicast (SSM), concept and operation of RPF, IGMP, IGMP snooping, PIM dense-mode and sparse-mode, concept and operation of Rendezvous point (RP), concept of SSM, Anycast RP, MSDP, Routing policy and scoping, etc.

- Ethernet Switching and Spanning Tree

Topics covered in this section are: understanding concepts and features of advanced Ethernet switching, Filter-based VLANs, Private VLANs, Dynamic VLAN registration using MVRP, Tunnel Layer 2 traffic through Ethernet networks, Layer 2 tunneling using Q-in-Q and L2PT, concepts of spanning tree protocols, MSTP and VSTP, etc.

- Layer 2 Authentication and Access Control

This section includes topic such as: concept and operation of several Layer 2 authentication and access, concepts and features of 802.1x, MAC RADIUS, Captive portal, Server fail fallback, Guest VLAN, etc.

- IP Telephony Features

In this section, the candidates must demonstrate their understanding of the concepts and functionality of IP telephone deployment issues, concepts of Power over Ethernet (PoE), LLDP and LLDP-MED, Voice VLAN, etc.

- Class of Service (CoS)

Topics included in this section are: explanation of the concepts, operation and features of Junos CoS for Layer 2/3 networks, CoS processing on Junos devices, CoS header fields, Forwarding classes, Packet loss priority, Schedulers, Drop profiles, etc.

Career prospects:

The JNCIP-ENT certification, that is, the JN0 643 certification is for those IT professionals who want to advance in the area of Junos networking. By passing JN0-643 exam, the candidate will become Juniper JNCIP certified and can get jobs with better salary, global recognition and better chance of being promoted. This certification distinguishes the candidate from peers and creates huge opportunity for career growth. Companies like HP, Motorola, IBM, Microsoft and Symantec etc hire individuals who have this credential. Professionals who are certified and have experience in this field are more valued than those without the certification.

Juniper Networks certified professionals demonstrate their understanding of latest networking technologies. A study shows that most managers realize that improvement in productivity is evident for hiring Juniper certified professionals. Study results also show that 50% of the professionals have gained performance improvement in multiple areas. This certification opens door to becoming an Enterprise Routing and Switching Expert.

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