Nokia Segment Routing : 4A0-116

4A0-116 real exams

Exam Code: 4A0-116

Exam Name: Nokia Segment Routing Exam

Updated: Oct 13, 2026

Q & A: 42 Questions and Answers

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Nokia 4A0-116 Exam Syllabus Topics:

SectionWeightObjectives
Segment Routing Traffic Engineering (SR-TE)25%- SR-TE LSP establishment and operation
  • 1. Flexible Algorithm (Flex-Algo)
    • 2. Path calculation and constraint-based routing
      - Path Computation Element (PCE) integration
      • 1. PCEP protocol operation
        • 2. Centralized path control
          Introduction to Segment Routing20%- Segment Routing concepts and terminology
          • 1. Stateless forwarding principle
            • 2. Comparison with LDP and RSVP-TE
              • 3. Segment ID (SID) and label mapping
                SRv6 Fundamentals10%- SRv6 header structure
                • 1. SRv6 deployment use cases
                  • 2. IPv6 SID function
                    Segment Routing Fast Reroute20%- BFD and failure detection
                    • 1. FRR activation and switchover
                      • 2. Seamless BFD for SR paths
                        - Loop-Free Alternate (LFA) protection
                        • 1. Standard LFA, Remote LFA, D-LFA
                          • 2. Topology-independent LFA
                            SR-MPLS Control Plane25%- IS-IS extensions for SR
                            • 1. Segment routing capability and sub-TLVs
                              • 2. Prefix SID and Adjacency SID advertisement
                                - OSPF extensions for SR
                                • 1. OSPFv2/v3 SR support
                                  • 2. SID allocation and propagation

                                    Nokia 4A0-116 Exam: Frequently Asked Questions

                                    Nokia Segment Routing is an official Nokia exam, identified by exam code 4A0-116. Passing it earns the Nokia Service Routing Architect (SRA) certification at the Professional level. It also relates to Nokia Service Routing Architect, Nokia SR Implementation Specialist. Certifications like this one remain a reliable route to standing out: they prove ability in a way resumes alone cannot.

                                    The Nokia Segment Routing exam contains 40 questions to complete within 90 minutes. The candidates who run out of time are usually the ones who never practiced against a clock. The PassTorrent software engine lets you limit your test time exactly like the real exam, exposing pacing weaknesses while they are still free to fix.

                                    You need 70% to pass Nokia Segment Routing, and the official registration fee is 125 USD. Retakes charge the full 125 USD again, which makes failing a genuinely expensive outcome. Reduce that risk the rational way: practice with the PassTorrent questions until your scores sit consistently above the requirement, then book.

                                    No mandatory prerequisites; recommended knowledge of IS-IS, OSPF, and MPLS protocols

                                    Vendor requirements change from time to time, so verify the current conditions before registering via the official exam page.

                                    Registration for Nokia Segment Routing runs through the official channels below.

                                    One practical note: the exam is delivered Online proctored or onsite testing center via Pearson VUE.

                                    Nokia recommends the following training for Nokia Segment Routing candidates.

                                    Whatever training you take, anchor it with the 42 practice questions in the PassTorrent 4A0-116 package, each with a detailed explanation that turns every mistake into a lesson.

                                    Yes. You can download the free demo of the Nokia Segment Routing questions before you buy, and after purchase you have the right to one year of free updates. When your product expires, extending the update service costs 50% of the regular price. Three versions, PDF, software, and online APP, let you study the way that suits you.

                                    A 100% money-back guarantee protects you under clear conditions. Take the Nokia Segment Routing exam within 60 days of purchase; if you fail, you can claim a full refund, provided the exam matches your product. Attempts within 3 days of purchase are ineligible, as are downloaded-but-unused products, free materials, and expired orders; the candidate name must match the payer name. Submit a scanned enrollment slip and the official Score Report PDF within 2 days of the exam, and claims are processed within 7 days. Alternatively, exchange for two other exam products of equal value, free, while keeping the update service on your original purchase.

                                    Delivery is instant: files unlock for download at payment and are automatically emailed within one minute. If nothing arrives within 2 hours, check spam and contact customer service, available 24/7. Installation is unlimited across your computers.

                                    The Nokia Segment Routing syllabus divides into 5 domains. The leading areas are Segment Routing Fast Reroute (20%), Segment Routing Traffic Engineering (SR-TE) (25%), and SRv6 Fundamentals (10%). The complete outline is published above; knowing your shortcomings starts with knowing the syllabus.

                                    Nokia Segment Routing Sample Questions:

                                    Question #1

                                    When OSPF is used to support Segment Routing, the first byte of the link-state ID associated with each of the opaque LSAs indicates the type of information being advertised. Which of the following associations between the first-byte value and its meaning is FALSE?

                                    • A. Value 4 - Router Info
                                    • B. Value 1 - Traffic Engineering
                                    • C. Value 7 - SRGB Range
                                    • D. Value 8 - Extended Link Info
                                    Reveal Solution  Discussion  0

                                    Correct Answer: D  🗳️

                                    Explanation: Only visible for PassTorrent members. You can sign-up / login (it's free).

                                    Question #2

                                    Which of the following statements about a Segment Routing SID is FALSE?

                                    • A. A local Node-SID can be configured as an index.
                                    • B. A local Node-SID can be configured directly as an MPLS label.
                                    • C. All routers do NOT need to have the same SRGB range configured.
                                    • D. A router advertises its local Node-SID as a local SRGB and an index only if it is configured as an index.
                                    Reveal Solution  Discussion  0

                                    Correct Answer: D  🗳️

                                    Explanation: Only visible for PassTorrent members. You can sign-up / login (it's free).

                                    Question #3

                                    To create a flex-algo instance in a network, which of the following configuration steps is mandatory?

                                    • A. Specifying whether the LSP paths will be computed locally or by an external path computation element (PCE).
                                    • B. Configuring the proper values for the shared-risk link groups (SRLGs) that will define the flex-algo topology.
                                    • C. Configuring at least one router in the network to create and advertise the flex-algo definition.
                                    • D. Configuring LSPs between every pair of PE routers.
                                    Reveal Solution  Discussion  0

                                    Correct Answer: C  🗳️

                                    Explanation: Only visible for PassTorrent members. You can sign-up / login (it's free).

                                    Question #4

                                    Which of the following statements about Segment Routing is FALSE?

                                    • A. No path signaling is required to establish an SR tunnel.
                                    • B. For TE-constrained tunnels, each data packet typically carries a single MPLS label to specify the tunnel path.
                                    • C. A link-state IGP is required to distribute SID information.
                                    • D. Intermediate routers do not maintain any tunnel informal
                                    Reveal Solution  Discussion  0

                                    Correct Answer: D  🗳️

                                    Explanation: Only visible for PassTorrent members. You can sign-up / login (it's free).

                                    Question #5

                                    An SR-TE LSP with a path definition that includes router R4 as a loose hop and for which Seamless-BFD has been enabled is following the path shown in the exhibit. What happens after router R4 fails if the routers along the path follow the default behavior?

                                    • A. The head end will periodically try to calculate a new path at a rate defined by the resignal timer.
                                    • B. The head end will periodically try to calculate a new path at a rate defined by the retry timer.
                                    • C. The head end will continue forwarding traffic to the current next-hop indefinitely, and R2 will redirect the traffic to R3 after IGP reconvergence.
                                    • D. The head end will continue forwarding traffic to the current next-hop indefinitely, which will be discarded at the point of failure.
                                    Reveal Solution  Discussion  0

                                    Correct Answer: D  🗳️

                                    Explanation: Only visible for PassTorrent members. You can sign-up / login (it's free).

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