- The Pass Rate Reality: What Nokia Does and Doesn't Publish
- Why One Number Could Never Describe SRA
- The Current Route: Five Written Exams Plus a Practical Lab
- Where Candidates Struggle: Domain-by-Domain Friction Points
- The Lab Factor: A Practical Assessment, Not an Item Count
- How to Read Pass-Rate Claims You Find Online
- Sequencing Preparation Around the Domains
- Who Values This Credential
- Frequently Asked Questions
- No current SRA pass rate has been established from the Nokia sources reviewed, so any precise percentage you see online is unverified.
- SRA is multi-exam: written exams 4A0-102, 4A0-105, 4A0-106, 4A0-107 and 4A0-115, then the 7-hour ASRA4A0 practical lab.
- The optional 4A0-C02 composite replaces only 4A0-102/105/106/107; it never replaces 4A0-115 or the practical lab.
- The lab has two independent 3.5-hour sections, and topics must be configured and verified rather than merely recognized.
The Pass Rate Reality: What Nokia Does and Doesn't Publish
Candidates searching for an SRA pass rate usually want a single reassuring figure. Here is the honest picture for Nokia Service Routing Architect: no verified pass rate is established in the issuer materials reviewed for this article. The certification pages, the 2026 program update, the course pages and the lab and composite exam pages describe scope, structure and eligibility. They do not publish a first-attempt or overall success percentage.
That absence matters. Many exam-prep sites fill the gap with confident numbers, often borrowed from entirely different credentials that happen to share the same three-letter acronym. If a page quotes a pass rate for "SRA" without naming Nokia, citing a source and a date, treat it as unreliable. On this site, we would rather tell you what is unknown than invent a statistic. For a broader view of difficulty without made-up percentages, see our guide on how hard the SRA exam really is.
Why One Number Could Never Describe SRA
Even if Nokia published a figure tomorrow, a single "SRA pass rate" would be a poor guide. The certification is not one exam. It is a sequence of separate written exams followed by a hands-on lab, and each stage tests a different skill. Any blended number would hide the stage that actually decides your outcome.
Consider what a single percentage would have to average together:
- Five written exams covering BGP, VPLS, VPRN, QoS and EVPN, each with its own scope and difficulty profile.
- A 7-hour practical lab with two independent sections, graded on what you configure and verify on live equipment.
- Candidates arriving by different routes, including those using the optional 4A0-C02 composite and those who were previously lab-eligible under the older rules.
It is also worth noting that the written exams should not be described using one shared question count or duration. Nokia does not present the whole certification as a single test with a single format, and neither should any analysis of it. If you want to understand how scoring thresholds work stage by stage, our page on the SRA passing score explains what is and is not established.
The Current Route: Five Written Exams Plus a Practical Lab
Effective September 8, 2026, the current path requires written exams 4A0-102, 4A0-105, 4A0-106, 4A0-107 and 4A0-115, followed by the practical ASRA4A0 lab. The older requirements have been simplified: separate IS-IS/OSPF, MPLS and Services Architecture exams are no longer required, though that knowledge still supports preparation. Multicast 4A0-108 is retired and is not a current SRA requirement.
| Stage | Code | Subject | Nature |
|---|---|---|---|
| Written | 4A0-102 | BGP for Internet Routing | Written exam |
| Written | 4A0-105 | Virtual Private LAN Services | Written exam |
| Written | 4A0-106 | Virtual Private Routed Networks | Written exam |
| Written | 4A0-107 | Quality of Service | Written exam |
| Written | 4A0-115 | Ethernet VPN Services | Written exam |
| Practical | ASRA4A0 | SRA Practical Lab | 7-hour hands-on lab |
The optional 4A0-C02 composite offers a different way through part of this route, but only part. It substitutes for 4A0-102, 4A0-105, 4A0-106 and 4A0-107 together. It does not replace 4A0-115, and it does not replace the practical lab. Candidates choosing between individual exams and the composite should read the details in our SRA requirements and eligibility guide.
Where Candidates Struggle: Domain-by-Domain Friction Points
Without published pass data, the most useful substitute is understanding where the material is structurally demanding. The six groups below are unweighted preparation groups, not a single weighted blueprint, so no topic percentages should be assumed. What follows is an analysis of scope, not a statistic. Our complete guide to the six SRA content areas goes deeper on each one.
BGP for Internet Routing (4A0-102)
The breadth here runs from inter-domain architecture to hands-on SR OS peer design and diagnosis.
- BGP mechanisms, attributes and IGP interaction
- Routing-policy configuration, verification and troubleshooting
- iBGP scalability through confederations and route reflectors
- Advertise-external, add-paths and fast-reroute operation and verification
Virtual Private LAN Services (4A0-105)
VPLS combines Ethernet and MPLS foundations with operational and scaling concerns.
- SAPs and SDPs, distributed-service MTU implications and FDB maintenance
- Loop prevention with RSTP, and M-VPLS with STP for redundancy and load distribution
- LAG, MC-LAG and active/standby pseudowire resilience
- H-VPLS hierarchy and PBB control of excessive MAC learning
Virtual Private Routed Networks (4A0-106)
Layer-3 VPNs reward candidates who can trace route distribution end to end.
- PE route distribution through MP-BGP, plus BGP loop causes and prevention
- Full-mesh, hub/spoke and extranet arrangements and Internet access options
- Inter-AS models A, B and C: operation, configuration, verification and diagnosis
- Carrier-supporting-carrier VPN architecture and forwarding paths
Quality of Service (4A0-107)
QoS is a long list of interlocking mechanisms rather than one idea, which is why many candidates find it dense.
- Classification at SAP and network ingress and egress, match precedence and default network policy
- Token-bucket metering, queue shaping versus policing, and scheduling priorities
- Policers, WRED slope policies, queue groups, CFHP and hierarchical scheduling
- Customer-header versus encapsulation-header marking and remarking across Layer-2, VPRN and IES services
Ethernet VPN Services (4A0-115)
EVPN is the newest-feeling topic in the set and spans data-center and service-provider contexts.
- ELAN route types: IMET flooding, MAC-route FDB learning and proxy-ARP
- IRB architecture, including asymmetric and symmetric forwarding models
- Ethernet segments, multihoming routes and designated-forwarder election
- ELINE VPWS and connectivity spanning EVPN and traditional MPLS networks
Because we do not have outcome data, we will not rank these by difficulty as if we did. What the scope does tell you is that every written exam mixes concept, configuration and troubleshooting, so memorizing definitions alone is a thin strategy.
The Lab Factor: A Practical Assessment, Not an Item Count
The ASRA4A0 lab is where the certification becomes distinct from a typical multiple-choice credential. Candidates design and implement live 7750 SR service networks, interoperate, diagnose performance and resolve faults, using either classic CLI or MD-CLI. The issuer states the lab content is unchanged by the 2026 update.
Structurally, the lab runs as two independent 3.5-hour sections, with a 1-hour lunch excluded from that time. Topics must be configured and verified, although not every topic necessarily appears in any given sitting. This is a practical assessment, not a multiple-choice item count, so concepts like "number of questions" or "scored versus unscored items" do not apply, and no current scored/unscored split is established.
The practical emphasis changes what "preparation" means. Reading about route reflectors is not the same as configuring them under time pressure and then proving they work. For a realistic view of the effort involved, see our SRA study guide.
How to Read Pass-Rate Claims You Find Online
Since no verified SRA pass rate exists in the sources we reviewed, a few red flags are worth knowing:
- No source or date. A bare percentage with no citation to Nokia is not evidence.
- One number for the whole route. Five written exams plus a lab cannot honestly collapse into one figure.
- Acronym confusion. Several unrelated credentials share "SRA." Figures about their fees, domains or success rates do not apply to Nokia Service Routing Architect.
- Guarantees. No practice resource, including ours, can promise a result. Our practice material is original supplemental study content, not issuer-endorsed and not drawn from actual exam questions.
- Outdated prerequisites. Content still describing IS-IS/OSPF, MPLS and Services Architecture exams as required, or Multicast 4A0-108 as part of the route, predates the September 8, 2026 update.
If you are weighing whether to pursue the credential at all, cost and career questions are better answered directly. Our pages on SRA certification cost and whether the SRA is worth it address those, while noting that no single overall exam fee is established in the reviewed materials.
Sequencing Preparation Around the Domains
With no pass-rate data to lean on, a sensible plan follows dependencies between topics. This is the one place we offer a schedule, and it is tied to the actual domains. Treat it as a suggestion, not a required order.
BGP first
- BGP underpins VPRN route distribution and EVPN, so work through attributes, policy, reflectors and confederations early.
- Practice peer configuration and verification in the CLI you plan to use in the lab.
VPLS then VPRN
- Build Layer-2 service fluency with SAPs, SDPs, MTU, FDB behavior and resilience mechanisms.
- Move to MP-BGP VPN signaling, RD/RT, VRF import/export and inter-AS A/B/C.
QoS and EVPN
- Treat QoS as a systems topic: classification, queuing, policing, scheduling and marking applied to real services.
- Study EVPN route types, IRB models, multihoming and designated-forwarder election, then interworking with MPLS services.
Lab-style integration
- Combine domains: configure a service, break it, diagnose it and verify the fix.
- Rehearse the discipline of verifying every configured topic, since the lab requires it.
You can test written-exam readiness against original practice questions on our SRA practice test site, and our SRA cheat sheet offers a quick review of high-value facts between sessions.
Who Values This Credential
The scope of SRA points to a clear audience: engineers who design, deploy and troubleshoot service-provider networks built on Nokia 7750 SR platforms. The content is oriented toward internet and VPN services, carrier interconnection, Layer-2 and Layer-3 service delivery, and data-center-adjacent EVPN designs. Employers in that space, including operators and integrators working with Nokia routing, are the natural audience for the credential.
We will not attach salary numbers or hiring statistics to that statement, since none are established in the reviewed materials. For role-oriented context, see our overview of SRA jobs and our salary guide, which approach earnings qualitatively.
Frequently Asked Questions
No verified pass rate for Nokia Service Routing Architect is established in the issuer materials reviewed. Because the route combines five written exams and a practical lab, a single number would also be misleading. Treat any unsourced percentage skeptically.
Effective September 8, 2026, the route requires written exams 4A0-102, 4A0-105, 4A0-106, 4A0-107 and 4A0-115, followed by the 7-hour ASRA4A0 practical lab. Separate IS-IS/OSPF, MPLS and Services Architecture exams are no longer required, and Multicast 4A0-108 is retired.
No. The optional composite substitutes only for 4A0-102, 4A0-105, 4A0-106 and 4A0-107. It does not replace 4A0-115 or the practical lab, so those still need to be completed.
It consists of two independent 3.5-hour sections, excluding a 1-hour lunch. You may use classic CLI or MD-CLI, and topics must be configured and verified, though not every topic necessarily appears. It is a practical assessment rather than a multiple-choice item count.
No. Course prerequisites are preparation recommendations, not additional current examination requirements, and training is not mandatory to attempt the exams. Previously lab-eligible candidates retain that eligibility under the announced transition. For background on the credential itself, see what SRA certification is.