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

JN0-648 real exams

Exam Code: JN0-648

Exam Name: Enterprise Routing and Switching, Professional (JNCIP-ENT)

Updated: Nov 06, 2026

Q & A: 92 Questions and Answers

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About Juniper Enterprise Routing and Switching, Professional (JNCIP-ENT) : JN0-648

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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
  • Given a scenario, demonstrate knowledge of how to configure, troubleshoot, or monitor IGPs
  • OSPFv2 and OSPFv3
  • Routing Policy

BGP route selection process

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

Components of IP multicast, including multicast addressing

  • Anycast RP
  • Any-Source Multicast (ASM) vs. Source-Specific Multicast (SSM)
  • MSDP
  • Implement IP multicast routing policy
  • IGMP and IGMP snooping
  • Describe the concepts, operation, or functionality of advanced Ethernet switching
  • IP multicast traffic flow
  • Rendezvous point (RP): concept, operation, discovery, and election
  • IGMP, PIM-DM, or PIM-SM (including 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
  • RPF: concept and operation
  • PIM dense-mode and sparse-mode

Filter-based VLANs

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

Authentication process flow

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

Power over Ethernet (PoE)

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

CoS processing on Junos devices

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

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

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Recertification of JNCIP-ENT

Once certified, the JNCIP-ENT certification is valid for three years. You must recertify within the active period (three years) otherwise your designation will expire and you will need to re-earn the entire certification track, including the lower-level certificates as these are the prerequisites for more advanced validations such as the JNCIP-ENT certification. Generally, you can recertify by testing or by attending relevant courses. If need be, you can view the status of your certification by using CertManager.

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Juniper JN0-648 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Advanced Ethernet Switching & Spanning Tree15%- MSTP, VSTP and loop prevention
- L2 tunneling and L2PT
- VLANs, trunking, MVRP and Q-in-Q
Topic 2: Interior Gateway Protocols (IGPs)20%- OSPFv2 / OSPFv3 concepts, configuration and troubleshooting
- IS-IS protocol operation and implementation
- Route redistribution and routing policy
Topic 3: IP Multicast15%- Multicast addressing and traffic flow
- PIM-SM / PIM-SSM and RP mechanisms
- IGMPv2 / IGMPv3 operation
Topic 4: Monitoring, Troubleshooting & High Availability10%- VRRP and link aggregation
- Protocol verification and troubleshooting tools
- Graceful restart and nonstop routing
Topic 5: Class of Service (CoS)10%- Queuing, scheduling, policing and shaping
- CoS implementation for L2/L3 networks
- Traffic classification and marking
Topic 6: Border Gateway Protocol (BGP)20%- BGP attributes and path selection
- BGP routing policies and communities
- IBGP / EBGP configuration and scaling
Topic 7: Layer 2 Authentication & Access Control10%- MAC RADIUS and dynamic VLAN assignment
- Port security and access control lists
- 802.1X authentication

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