NRS I Requirements 2026: Eligibility, Prerequisites & How to Qualify

What "Qualifying" Actually Means for NRS I

When candidates search for Nokia Network Routing Specialist I (NRS I) requirements, they usually expect a checklist: years of experience, a prior certification, a mandatory course, perhaps a signed attestation. The reality for NRS I is much simpler, and that simplicity is worth understanding precisely so you do not waste money or time on requirements that do not exist.

NRS I is the entry point of Nokia's routing certification path. Qualifying means passing a single exam. There is no experience gate, no endorsement step, and no lab practical attached to this level. What the exam does expect is a working command of IP networking fundamentals and a first familiarity with Nokia's service router platform. If you are new to the credential itself, our explainer on what NRS I certification is covers the basics before you dig into eligibility.

The Prerequisite Question: What Nokia Does and Does Not Require

Nokia lists no mandatory exam prerequisite for NRS I. In practical terms, that means:

• You do not need to hold any earlier Nokia certification before attempting the exam.
• You are not required by the exam listing to complete a particular training course before registering.
• You do not need to demonstrate a minimum number of years working in networking to be allowed to sit the test.

That said, "no mandatory prerequisite" is not the same as "no preparation needed." The exam tests real conceptual material: layered protocol models, Ethernet behavior, IPv4 addressing and subnetting, static routing, OSPF, a first look at BGP, and VPN service concepts. A candidate arriving cold, with no networking background, faces a steep climb even though no gatekeeping rule stands in the way. For a frank look at that climb, see how hard the NRS I exam is.

Formal requirements versus practical readiness

The Single Exam You Must Pass: 4A0-100

The entire formal requirement for NRS I is passing 4A0-100 IP Networks and Services Fundamentals. It is a multiple-choice exam of 40 questions delivered in 90 minutes. Candidates sometimes see a longer figure on their appointment confirmation, and it is worth decoding: the appointment runs 110 minutes because it includes a 20-minute introductory survey. That survey is not exam time. Your actual testing window is 90 minutes.

Because the format is purely multiple choice, the exam rewards candidates who can recognize correct technical statements and eliminate plausible-but-wrong ones. Questions at this level typically probe whether you understand why a protocol or component behaves as it does, not merely whether you can recite a definition.

The Knowledge Baseline: Six Modules You Should Be Ready For

Nokia organizes the exam preparation outline into six modules containing 28 subtopics. These are issuer-designated candidate exam-topic modules. They are an outline for preparation, not a weighted examination blueprint, and Nokia does not present them as an exhaustive statement of everything that could appear. Treat them as the strongest signal available of what to study. For a deeper walk through each one, read the complete guide to the six NRS I content areas.

Collectively, the learning objectives expect you to explain layered TCP/IP, Ethernet, IP forwarding and addressing, static versus dynamic routing, OSPF and BGP, and VPN types with MPLS transport. You should also be able to place Nokia router products within networks and use the 7750SR command line to configure service components.

Registration Mechanics and Fee Reality

The published exam fee is USD 125. That number covers the exam attempt itself. It does not include any Nokia training you choose to buy, and training pricing is listed separately. This distinction trips up many budgeting estimates: a candidate who adds a course price to the exam fee is calculating a total program cost, which is a different thing from the cost to sit the test.

Two practical points about the appointment itself:

1. Expect a 110-minute slot. The extra 20 minutes is an introductory survey, not additional exam time.
2. Plan around 90 minutes of real testing. With 40 questions, that leaves a little over two minutes per item on average, which is comfortable for most fundamentals-level questions but tighter for scenario-style items.

For a full accounting of what you may spend end to end, including optional training, see our NRS I certification cost breakdown. Scheduling windows and deadlines are covered separately in NRS I exam dates.

Why NRS I Requirements Are Not NRS II or SRA Requirements

Nokia's routing path includes higher-level credentials, and it is easy to blur their requirements together. Do not. NRS I requires 4A0-100 and nothing more. The lab and composite requirements associated with NRS II or the Service Routing Architect level do not apply here, and you should not infer them from reading about those tracks.

This matters for two reasons. First, it prevents you from over-preparing for hands-on lab assessments that are not part of the NRS I requirement. Second, it prevents you from under-appreciating what NRS I is: a foundational credential that establishes your baseline, which later certifications build upon. Understanding the entry-level scope is also a good way to judge value; our analysis of whether the NRS I certification is worth it weighs that foundation against your career goals.

Sequencing Your Readiness by Module

Since the exam has no weighting published for the six modules, a sensible approach is to order your preparation by dependency rather than by guessed emphasis. Concepts in earlier modules underpin later ones, so a logical sequence saves rework. Here is one way to schedule it over six weeks, adjusted to your own pace.

For a full methodology, our NRS I study guide expands on this, and the one-page cheat sheet is useful for last-pass review. You can also test yourself on the NRS I practice test site. Practice questions there are original supplemental study material; they are not actual exam questions, are not issuer endorsed, and cannot guarantee results.

Timing: The October 2026 Scope and the 2027 Transition

One requirement-adjacent fact deserves attention if you are planning your attempt: Nokia has announced a revised exam on 2027-03-09, with the exam unavailable from 2027-02-09 through 2027-03-08. The material in this article reflects the scope as reviewed in October 2026.

What this means for you:

• If you intend to test on the current exam, plan to complete it before the unavailability window begins.
• If you expect to test after the transition, recheck Nokia's exam page, because topics, structure, or details may change.
• Do not assume that study material built for the current scope will map one-to-one onto the revised exam.

Who This Credential Fits

Because the formal bar to entry is low, the better question is whether NRS I fits your situation. The credential is aimed at people who will work with, support, or sell around Nokia's IP and service router products, and at those building toward higher Nokia routing certifications.

• Network engineers and technicians moving into service-provider environments that use Nokia platforms.
• Operations and support staff who need a structured grounding in routing and VPN services.
• Career changers and students who want a vendor-recognized foundation in IP networking and services.
• Pre-sales and technical sales professionals who need to speak credibly about the product range and service concepts.

Whether it translates into job prospects depends on your market and background; see our overviews of NRS I jobs and the NRS I salary guide for how we frame those questions without inventing figures. If you want a structured training path, our page on NRS I training outlines your options.

Frequently Asked Questions

For a broader orientation to the credential and how the pieces fit, start with what NRS I is, then return to this page when you are ready to plan your registration.