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Resources to Ace Your JN0-648 Exam

All in all, there are two official courses offered by Juniper Networks which are recommended to train candidates to successfully pass JN0-648 exam:

  • Advanced Junos Enterprise Routing (AJER)

    This is a five-day class that covers useful concepts of Layer 3 elements in enterprise networks. Plus, you will learn about BGP, multicast, OSPF, the class of service, and EVPN-VXLAN. By taking this training, your troubleshooting skills will also be enriched. To add more, this course utilizes some demonstrative means and practical labs that help students gain great experience with handling the Junos OS and operations for protocols. As prerequisites, you need to have a fundamental knowledge of networking and the model for Open Systems Interconnection (OSI), as well as the TCP/IP suite of protocols. Work experience with core routing facets is also needed. You should also have taken the Introduction to the Junos Operating System (IJOS) and Junos Intermediate Routing (JIR) courses.

  • Advanced Junos Enterprise Switching (AJEX)

    This two-day course details such notions as VLAN, MSTP, VSTP, Layer 2 networks, IP telephony features, CoS, and handling tools which use the EX Series Ethernet Switches. Before taking it, you need to have a fundamental understanding of the OSI reference model, and the TCP/IP protocol suite. What is more, prerequisite courses include Junos Operating System (IJOS) and Junos Enterprise Switching (JEX). To put it simply, this class covers various Juniper products, Switching, EX Series, and Junos OS and is available on the vendor’s site as on-demand training that will cost you $1900.

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Juniper JN0-648 Exam Topics:

SectionObjectives
IP MulticastDescribe the concepts, operation, or functionality of IP multicast
  • Components of IP multicast, including multicast addressing
  • IP multicast traffic flow
  • Any-Source Multicast (ASM) vs. Source-Specific Multicast (SSM)
  • RPF: concept and operation
  • IGMP and IGMP snooping
  • PIM dense-mode and sparse-mode
  • Rendezvous point (RP): concept, operation, discovery, and election
  • SSM: requirements, benefits, address ranges
  • Anycast RP
  • MSDP
  • Routing policy and scoping

Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor IP multicast

  • IGMP, PIM-DM, or PIM-SM (including SSM)
  • Implement IP multicast routing policy
Interior Gateway Protocols (IGPs)Describe the concepts, operation, or functionality of IGPs
  • IS-IS
  • OSPFv2 and OSPFv3
  • Routing Policy

Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor IGPs

Class of Service (CoS)Describe the concepts, operation, or functionality of Junos CoS for Layer 2 or 3 networks
  • CoS processing on Junos devices
  • CoS header fields
  • Forwarding classes
  • Classification
  • Packet loss priority
  • Policers
  • Schedulers
  • Drop profiles
  • Shaping
  • Rewrite rules

Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor CoS for Layer 2 or 3 networks

EVPNDescribe the concepts, operation, or functionality of Junos EVPN
  • VXLAN
  • Multi-homing (for example, active route types)

Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor EVPN

Ethernet Switching and Spanning TreeDescribe the concepts, operation, or functionality of advanced Ethernet switching
  • Filter-based VLANs
  • Private VLANs
  • Dynamic VLAN registration using MVRP
  • Tunnel Layer 2 traffic through Ethernet networks
  • Junos Fusion Enterprise
  • Layer 2 tunneling using Q-in-Q and L2PT

Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor advanced Ethernet switching

  • Filter-based VLANs
  • Private VLANs
  • Dynamic VLAN registration using MVRP
  • Tunnel Layer 2 traffic through Ethernet networks
  • Junos Fusion Enterprise
  • Layer 2 tunneling using Q-in-Q and L2PT

Describe the concepts, operation, or functionality of advanced spanning tree protocols, including MSTP or VSTP

  • Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor MSTP or VSTP
Layer 2 Authentication and Access ControlDescribe the operation of various Layer 2 authentication or access control features
  • Authentication process flow
  • 802.1x: concepts and functionality
  • MAC RADIUS
  • Captive portal
  • Server fail fallback
  • Guest VLAN
  • Considerations when using multiple authentication/access control methods

Given a scenario, demonstrate how to configure, troubleshoot, or monitor Layer 2 authentication or access control

BGPDescribe the concepts, operation, or functionality of BGP
  • BGP route selection process
  • Next hop resolution
  • BGP attributes: concept and operation
  • BGP communities
  • Regular expressions
  • Load balancing - multipath, multihop, forwarding table
  • NLRI families: inet and inet6
  • Advanced BGP options

Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor BGP

  • Implement BGP routing policy
IP Telephony FeaturesDescribe the concepts, operation, or functionality of features that facilitate IP telephony deployments
  • Power over Ethernet (PoE)
  • LLDP and LLDP-MED
  • Voice VLAN

Given a scenario, demonstrate how to configure, troubleshoot, or monitor features used to support IP telephony deployments

Reference: https://www.juniper.net/us/en/training/certification/tracks/enterprise-routing-switching/jncip-ent.html

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