Nokia NRS II Composite (OSPF)
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ExploreAbout this exam
The Nokia NRS II Composite (OSPF) is an independent study resource for network engineers who already hold Nokia Routing Specialist I knowledge or equivalent hands-on experience and want to validate advanced OSPFv2/OSPFv3 skills in Nokia SR OS environments. It targets design, implementation, and troubleshooting roles in service provider and large enterprise networks where OSPF is used for underlay and area design. The material spans OSPF fundamentals, packet types, and the neighbor state machine; link-state database structure, LSA types, and area types; SPF computation, metrics, and ECMP; virtual links, stub/NSSA areas, and redistribution; OSPFv2/OSPFv3 configuration on SR OS; authentication and area protection; convergence, LFA, and TI-LFA; and verification with SR OS show commands. Preparation should combine the Nokia SR OS documentation and command reference with a lab or virtual router topology where you can observe neighbor formation, LSA flooding, SPF changes, and fast-reroute behavior. Practice reading show output and tracing a route from the link-state database to the routing table. This page is not affiliated with or endorsed by Nokia; for registration, scheduling, current fees, question counts, time limits, passing scores, retake rules, and validity periods, consult Nokia's official certification site, which publishes the authoritative figures.
What you'll study
About Nokia NRS II Composite (OSPF) preparation
What is the NRS II Composite (OSPF) exam actually testing?
It tests advanced OSPF knowledge in a Nokia SR OS context: neighbor state transitions, LSA and area design, SPF and ECMP behavior, virtual links, stub/NSSA handling, redistribution, authentication, and convergence with LFA/TI-LFA. Expect configuration and verification questions rather than pure theory.
What is the exam format?
The format is multiple-choice and multiple-response questions. The official body publishes the current question count, time limit, and delivery method on its certification site; check there before scheduling, because those details change between exam revisions.
How difficult is it compared with NRS I?
It is a clear step up. NRS I checks foundational routing and SR OS familiarity; this exam assumes you can reason about LSA flooding, area boundaries, and SPF outcomes without prompts. Candidates who only memorize commands usually struggle with scenario questions that ask why a neighbor or route is missing.
Can I retake it if I fail, and how long is the certification valid?
Retake policy and certification validity are set by Nokia, not by this page. The official certification site lists the current retake rules, waiting periods, and validity duration. Confirm those before you book, and plan your renewal window around the published validity period.
In what order should I study the domains?
Start with fundamentals, packet types, and the neighbor state machine, because every later symptom traces back to them. Then study the LSDB, LSA types, and area types, followed by SPF, metrics, and ECMP. Add virtual links, stub/NSSA, and redistribution, then SR OS configuration, security, convergence, and troubleshooting.
What are the most common failure modes on this exam?
Confusing LSA types and which router originates them; misjudging stub versus NSSA behavior at area boundaries; forgetting that virtual links require a transit area and a reachable interface; and misreading SR OS show output. Another frequent trap is assuming ECMP works when costs or protocol preferences differ.
How much lab time do I need?
Enough to see cause and effect. Build a multi-area topology in SR OS, break it deliberately, and observe neighbor states, LSA flooding, and SPF recalculations. Practice reading link-state and route-table output until you can explain each field. Quality lab hours beat passive reading.
Where do I register and find the current fee and passing score?
Register through Nokia's official certification portal. That site publishes the current fee, passing score, question count, time limit, and any regional scheduling details. This page intentionally does not state those figures because they change and only the official source is authoritative.