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Download Juniper : JN0-648 Questions & Answers as PDF & Test Software

Last Updated: Jun 07, 2026

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Topics of Juniper JN0-648: Enterprise Routing and Switching, Professional (JNCIP-ENT) Exam

Candidates must know the exam topics before they start preparation. Because it will help them in hitting the core. Our Juniper JN0-648 exam dumps will include the following topics:

IS-IS

  • Describe the concepts, operation, or functionality of BGP
  • OSPFv2 and OSPFv3
  • Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor IGPs
  • Routing Policy

BGP route selection process

  • BGP attributes: concept and operation
  • BGP communities
  • Advanced BGP options
  • Next hop resolution
  • Load balancing - multipath, multihop, forwarding table
  • Implement BGP routing policy
  • Regular expressions
  • Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor BGP
  • NLRI families: inet and inet6
  • Describe the concepts, operation, or functionality of IP multicast

Components of IP multicast, including multicast addressing

  • Any-Source Multicast (ASM) vs. Source-Specific Multicast (SSM)
  • Routing policy and scoring has given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor IP multicast
  • SSM: requirements, benefits, address ranges
  • IP multicast traffic flow
  • PIM dense-mode and sparse-mode
  • Implement IP multicast routing policy
  • IGMP, PIM-DM, or PIM-SM (including SSM)
  • IGMP and IGMP snooping
  • Anycast RP
  • Describe the concepts, operation, or functionality of advanced Ethernet switching
  • Rendezvous point (RP): concept, operation, discovery, and election
  • MSDP
  • RPF: concept and operation

Filter-based VLANs

  • Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor MSTP or VSTP
  • Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor advanced Ethernet switching
  • Junos Fusion Enterprise
  • Junos Fusion Enterprise
  • Tunnel Layer 2 traffic through Ethernet networks
  • Tunnel Layer 2 traffic through Ethernet networks
  • Describe the operation of various Layer 2 authentication or access control features
  • Describe the concepts, operation, or functionality of advanced spanning tree protocols, including MSTP or VSTP
  • Dynamic VLAN registration using MVRP
  • Dynamic VLAN registration using MVRP
  • Layer 2 tunneling using Q-in-Q and L2PT
  • Layer 2 tunneling using Q-in-Q and L2PT
  • Filter-based VLANs
  • Private VLANs
  • Private VLANs

Authentication process flow

  • 802.1x: concepts and functionality
  • Considerations when using multiple authentication/access control methods
  • Describe the concepts, operation, or functionality of features that facilitate IP telephony deployments
  • Captive portal
  • Guest VLAN
  • Server fail fallback
  • MAC RADIUS
  • Given a scenario, demonstrate how to configure, troubleshoot, or monitor Layer 2 authentication or access control

Power over Ethernet (PoE)

  • Voice VLAN
  • Describe the concepts, operation, or functionality of Junos CoS for Layer 2 or 3 networks
  • LLDP and LLDP-MED
  • Given a scenario, demonstrate how to configure, troubleshoot, or monitor features used to support IP telephony deployments

CoS processing on Junos devices

  • Forwarding classes
  • Schedulers
  • Classification
  • Packet loss priority
  • Describe the concepts, operation, or functionality of Junos EVPN
  • Shaping
  • Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor CoS for Layer 2 or 3 networks
  • Drop profiles
  • Rewrite rules
  • Policers
  • CoS header fields

VXLAN

  • Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor EVPN
  • Multi-homing (for example, active route types)

Juniper JN0-648 Exam Topics:

SectionObjectives
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

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
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

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 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
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

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

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

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

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