The Nokia 4A0-116 exam validates expertise in Nokia Segment Routing for professionals pursuing the Nokia Service Routing Architect certification. This exam tests your ability to design, configure, and troubleshoot segment routing deployments in modern service provider networks. Whether you are advancing your routing architecture skills or preparing for a service routing role, this page provides a clear study roadmap and practical guidance to help you pass confidently.
Use this topic map to guide your study for Nokia 4A0-116 (Nokia Segment Routing) within the Nokia Service Routing Architect path.
The exam combines knowledge-based and scenario-driven questions to assess both theoretical understanding and practical decision-making ability. Questions progress in difficulty and reflect real-world deployment challenges.
Effective preparation requires mapping each module to focused study blocks, practicing with realistic questions, and reinforcing connections between concepts. Dedicate time to hands-on labs whenever possible to build muscle memory for configuration tasks.
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Segment Routing Tunnels with Traffic Engineering Constraints and SR-TE with a Path Computation Element typically account for a larger portion of exam questions because they require both conceptual knowledge and practical application. Fast Re-route and Flexible Algorithms are also heavily tested since they directly impact production network reliability and performance.
In practice, you start with Introduction to Segment Routing and Basic Configuration to establish SR fundamentals, then layer on Tunnels with Traffic Engineering to meet service requirements. SR-TE with PCE automates this at scale, while Fast Re-route protects against failures and Flexible Algorithms enables per-service path optimization. Understanding this workflow helps you answer scenario-based questions more accurately.
Hands-on experience accelerates learning but is not strictly required to pass. Prioritize labs for Basic Segment Routing Configuration and Operation and SR-TE setup, as these directly map to exam questions. If access is limited, focus on understanding configuration syntax, output interpretation, and troubleshooting logic through detailed Q&A explanations.
Candidates often confuse SID allocation strategies (node-SID vs. adjacency-SID) or misunderstand when to use flex-algo versus standard SR tunnels. Another frequent error is overlooking fast reroute backup path requirements or misinterpreting PCE policy constraints. Reviewing Q&A explanations and practicing scenario questions helps avoid these pitfalls.
In your final week, take a full-length timed practice test to identify weak areas, then focus your review on those topics rather than re-reading all modules. Create a quick reference sheet of key terms, SID types, and configuration commands. On exam day, read each question carefully and eliminate obviously wrong answers before selecting your choice.
Which of the following statements about primary and secondary SR-TE LSP paths is FALSE?
Typically, in SR-TE, only two paths can be configured for a given SR-TE LSP: primary path and secondary path. The primary path is used for normal traffic forwarding, and the secondary path is used as a backup in case the primary path fails. Only one LSP path forwards the traffic at any time.
Which of the following list of SR-TE attributes has to be advertised among routers?
In SR-TE, routers need to advertise certain attributes of their links to other routers in the network in order to calculate traffic-engineered paths. These attributes include:
Administrative groups that each link belongs to: This information is used to restrict the use of certain links to specific traffic types or groups.
TE metric of links: This information is used to calculate the cost of using a particular link for a traffic-engineered path.
Bandwidth availability of each link: This information is used to control the amount of traffic that can be sent over a particular link.
SRLG that each link belongs to: This information is used to avoid routing over the same physical link. Link status up/down is not needed to be advertised as it is part of the IGP protocol and is used to check the reachability of a link.
Which of the following steps is NOT required when configuring IS-IS to support Segment Routing?
Enable interfaces used for Segment Routing under: This step is not required, enabling interfaces used for Segment Routing is not necessary as the IS-IS protocol already takes care of the flooding of the routing information.
A router participating in SR-TE is advertising a value of Ox11 for the admin-group membership of one of its interfaces. Which of the following statements is TRUE?
In SR-TE, the admin-group is represented by a 32-bit value, where each bit represents a different admin-group. The value Ox11 in binary is 000100010001, which has two bits set to 1, indicating that the interface belongs to two different admin groups. The exact admin-groups that the interface belongs to depends on how the admin-groups have been configured on the router.
Which of the following statements about a Segment Routing SID is FALSE?
A router advertises its local Node-SID as a local SRGB and an index only if it is configured as an index: This statement is not true, A router will advertise its local Node-SID as a local SRGB and an index, whether it is configured as an index or not.
