JN0-664 Service Provider Professional (JNCIP-SP) Exam Info and Questions Sharing

Understand Juniper JN0-664 Exam Info

The JN0-664 Service Provider Routing and Switching, Professional (JNCIP-SP) is for networking professionals aiming to prove their advanced understanding of Juniper Networks technologies used in large-scale service provider environments. If you already hold the JNCIS-SP certification and have hands-on experience configuring, managing, and troubleshooting Junos-based service provider networks, the JN0-664 exam is your next step toward earning the JNCIP-SP credential.

Number of Questions: 65 multiple-choice questions
Duration: 90 minutes
Software Version: Junos OS 22.3
Delivery Platform: Pearson VUE
Language: English
Result: Pass/fail status available immediately after exam completion

Master Juniper JN0-664 Key Exam Topics

The JN0-664 exam focuses on the advanced routing and service provider technologies below:

1. OSPF (Open Shortest Path First)
Candidates must understand OSPF area types, neighbor relationships, LSA types, route summarization, and troubleshooting adjacency issues. Expect scenario-based questions involving multiple areas and route redistribution.

2. IS-IS (Intermediate System to Intermediate System)
You’ll need to configure and troubleshoot IS-IS levels, metrics, route leaking, and authentication. Understanding differences between IS-IS and OSPF in large networks is critical.

3. BGP (Border Gateway Protocol)
This is one of the heaviest-weight topics. Be ready for questions about iBGP and eBGP configurations, route reflection, BGP communities, multipath, and policy-based routing using route filters and prefix lists.

4. Class of Service (CoS)
Know how to configure traffic classification, queue scheduling, policing, and shaping. Questions often test your understanding of how Junos implements CoS to ensure traffic prioritization and quality of service.

5. IP Multicast
Expect coverage of PIM (Sparse Mode, Dense Mode), RPF checks, IGMP versions, and multicast troubleshooting. Understanding how multicast routing integrates with OSPF or BGP is beneficial.

6. Layer 3 VPNs (L3VPN)
You’ll encounter topics such as MP-BGP, VRF configuration, route distinguishers, and route targets. Be comfortable troubleshooting inter-AS VPNs and customer route exchange issues.

7. Layer 2 VPNs (L2VPN)
Understand pseudowire, VPLS, EVPN, and PE/CE configuration. Candidates should be able to identify and resolve common control-plane and data-plane issues in Layer 2 VPN environments.

Recommended JN0-664 Exam Preparation

To succeed in the JN0-664 exam, candidates should:

Have hands-on experience with Junos-based devices in service provider networks.
Review the official Juniper JNCIP-SP study guide and Juniper TechLibrary documentation.
Use Juniper vLabs or an EVE-NG/GNS3 lab to practice real configurations.
Practice troubleshooting with show, traceoptions, and monitor commands.
Take practice exams and scenario-based questions to strengthen time management and conceptual clarity.

Earning the JNCIP-SP certification through the JN0-664 exam demonstrates your ability to manage and troubleshoot complex routing environments – a valuable skill for service provider engineers, network consultants, and technical specialists. With diligent preparation, practical lab work, and a solid understanding of Junos routing technologies, you’ll be well-equipped to pass the exam and advance toward the JNCIE-SP expert level.