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Juniper JN0-663 : Service Provider Routing and Switching, Professional (JNCIP-SP)

JN0-663

Exam Code: JN0-663

Exam Name: Service Provider Routing and Switching, Professional (JNCIP-SP)

Updated: May 31, 2026

Q & A: 96 Questions and Answers

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About Juniper JN0-663 Exam

Juniper JN0-663 Exam Topics:

SectionObjectives
Layer 2 VPNsDescribe the concepts, operation, or functionality of BGP Layer 2 VPNs
  • Traffic flow: control and data planes
  • Forwarding tables
  • Connection mapping
  • Layer 2 VPN NLRI
  • Route distinguishers
  • Route targets
  • Layer 2 VPN scaling

Describe the concepts, operation, or functionality of LDP Layer 2 circuits

  • Traffic flow: control and data planes
  • Virtual circuit label
  • AutoDiscovery
  • Layer 2 interworking

Describe the concepts, operation, or functionality of VPLS

  • Traffic flow: control and data planes
  • BGP VPLS label distribution
  • LDP VPLS label distribution
  • Route targets
  • VPLS Multihoming
  • Site IDs

Describe the concepts, operation, or functionality of EVPN

  • Traffic flow: control and data planes
  • MAC learning and distribution
  • EVPN Multihoming
  • BGP EVPN label distribution

Given a scenario, demonstrate knowledge of how to configure, monitor, or troubleshoot Layer 2 VPNs

  • BGP Layer 2 VPNs
  • LDP Layer 2 circuits
  • EVPNs
  • VPLS
Class of Service (CoS)Describe the concepts, operation, or functionality of Junos CoS
  • CoS processing on Junos devices
  • CoS header fields
  • Forwarding classes
  • Classification
  • Packet loss priority
  • Policers
  • Schedulers
  • Drop profiles
  • Rewrite rules

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

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) versus Source-Specific Multicast (SSM)
  • RPF: concept and operation
  • IGMP
  • PIM dense-mode and sparse-mode
  • Rendezvous point (RP): concept, operation, discovery, and election
  • SSM: requirements, benefits, address ranges
  • Anycast RP

Given a scenario, demonstrate knowledge of how to configure or monitor IGMP, PIM-DM, or PIM-SM (including SSM)

  • Implement IP multicast routing policy
IS-ISDescribe the concepts, operation, or functionality of IS-IS
  • IS-IS areas/levels and operations
  • LSP flooding through an IS-IS multi-area network
  • DIS operation
  • SPF algorithm
  • Metrics, including wide metrics
  • Route summarization and route leaking

Given a scenario, demonstrate knowledge of how to configure or monitor single-area or multi-area IS-IS

  • Implement IS-IS routing policy
BGPDescribe the concepts, operation, or functionality of BGP
  • BGP route selection process
  • Next hop resolution
  • BGP attributes: concept and operation
  • BGP communities
  • Regular expressions
  • Multipath
  • Multihop
  • Load balancing
  • Advanced BGP options
  • BGP route damping
  • FlowSpec
  • Multiprotocol BGP

Describe the concepts, operation, or functionality of BGP scaling mechanisms

  • Route reflection

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

  • Implement BGP routing policy
OSPFDescribe the concepts, operation, or functionality of OSPFv2 or OSPFv3
  • OSPF area types and operations
  • LSA flooding through an OSPF multi-area network
  • DR/BDR operation
  • SPF algorithm
  • Metrics, including external metric types
  • Summarize and restrict routes
  • Virtual links
  • OSPFv2 versus OSPFv3

Given a scenario, demonstrate knowledge of how to configure or monitor single-area or multi-area OSPF

  • Implement OSPF routing policy
Layer 3 VPNsDescribe the concepts, operation, or functionality of Layer 3 VPNs
  • Traffic flow: control and data planes
  • Full mesh versus hub-and-spoke topology
  • VPN-IPv4 addressing
  • Route distinguishers
  • Route targets
  • Route distribution
  • Site of origin
  • Sham links
  • vrf-table-label
  • Next-generation MVPNs
  • Flow of control and data traffic in an MVPN
  • Layer 3 VPN scaling
  • IPv6 Layer 3 VPNs
  • Layer 3 VPN Internet access options

-Given a scenario, demonstrate knowledge of how to configure or monitor the components of Layer 3 VPNs
-Describe Junos support for carrier-of-carriers or interprovider VPN models

Reference: https://www.juniper.net/us/en/training/certification/tracks/service-provider-routing-switching/jncip-sp.html

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Test Prerequisites

To take the Professional Service Provider Routing and Switching or JN0-663 exam, you need to first complete the Specialist Service Provider Routing and Switching certification by nailing JN0-362. Further, Juniper recommends some work experience in networking, cloud services, cloud management, security, and routing configurations. Nevertheless, the right preparation and industrial experience will get you higher chances of passing the official exam.

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