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Nokia 4A0-C04 Exam Overview:

Certification Vendor:Nokia
Exam Name:Nokia NRS II Composite Exam: OSPF Version 4A0-C04
Exam Number:4A0-C04
Available Languages:English
Exam Format:Scenario-based Questions, Multiple Choice
Related Certifications:Nokia Network Routing Specialist II (NRS II)
Nokia Network Routing Specialist I (NRS I)
Sample Questions: DOWNLOAD DEMO
Exam Way:Typically delivered via authorized test centers (e.g., Pearson VUE) or online proctored delivery depending on region
Pre Condition:Recommended prior completion of Nokia NRS I certification or equivalent IP routing knowledge

Nokia 4A0-C04 Exam Syllabus Topics:

SectionObjectives
Topic 1: LSA Types and Database- Link State Advertisements
  • 1. LSA Types 1, 2, 3, 4, 5
    • 2. LSDB synchronization
      Topic 2: OSPF Fundamentals- OSPF protocol overview
      • 1. Link-state routing principles
        • 2. OSPF packet types
          Topic 3: Route Calculation and Optimization- SPF algorithm
          • 1. Dijkstra algorithm basics
            - Routing optimization
            • 1. Route preference and selection
              • 2. Cost metrics
                Topic 4: OSPF Areas and Hierarchy- Area types
                • 1. Backbone area (Area 0)
                  • 2. Stub and NSSA areas
                    - Route summarization
                    • 1. Inter-area routing
                      • 2. ABR and ASBR roles
                        Topic 5: Neighbor Relationships- Adjacency formation
                        • 1. Neighbor states
                          • 2. Hello protocol and timers
                            - DR and BDR election
                            • 1. Network types
                              • 2. Election process
                                Topic 6: OSPF Operations and Troubleshooting- Authentication
                                • 1. Simple and MD5 authentication
                                  - Troubleshooting methods
                                  • 1. Adjacency issues
                                    • 2. LSDB inconsistencies

                                      Nokia 4A0-C04 Exam — Common Questions, Clear Answers

                                      The 4A0-C04 exam is Nokia's official assessment for the Network Routing Specialist II (NRS II) certification, positioned at the Professional level. It measures whether you can apply the Nokia NRS II Composite Exam: OSPF version skills in practical, job-like situations — which is why rote memorization alone rarely gets candidates across the line. The credential fits into a wider Nokia certification path that includes Nokia Network Routing Specialist I (NRS I), Nokia Network Routing Specialist II (NRS II), so passing it opens more than one door. Think of the 4A0-C04 exam as the point where your preparation becomes a qualification employers can verify.

                                      The Nokia NRS II Composite Exam: OSPF version syllabus is organized into 6 domains, beginning with LSA Types and Database, OSPF Operations and Troubleshooting, and Route Calculation and Optimization. Those percentages are your study budget: a domain carrying a larger share of the score deserves a matching share of your hours. The full domain-by-domain breakdown is in the exam topics section above — work from that, not from habit.

                                      Nokia lists the Nokia NRS II Composite Exam: OSPF version question formats as: Multiple Choice, Scenario-based Questions. Each format has its own trap. With scenario items, the actual question hides at the end of a long stem — read the last sentence first, then work back through the details. With elimination-friendly formats, cross out what you can disprove before committing. The Exams-boost question bank lets you rehearse every format until the mechanics feel boring, which is exactly where you want to be on exam day.

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                                      Nokia NRS II Composite Exam: OSPF version Sample Questions:

                                      Question #1

                                      What happens by default on an Nokia 7750 SR when a null encapsulated SAP receives a frame with a VLAN tag?

                                      • A. The original VLAN tag is removed.
                                      • B. The VLAN tag is kept and a provider tag is added.
                                      • C. The original VLAN tag is kept.
                                      • D. The VLAN tag is replaced by a provider tag.
                                      Reveal Solution  Discussion  0

                                      Correct Answer: C  🗳️

                                      Question #2

                                      Which routing protocol cannot be run over an Ipipe?

                                      • A. OSPF
                                      • B. BGP
                                      • C. IS-IS
                                      • D. RIP
                                      Reveal Solution  Discussion  0

                                      Correct Answer: C  🗳️

                                      Question #3

                                      Click on the exhibit.

                                      An LDP-over-RSVP tunnel is established between PE-1 and PE-2. Which of the following is NOT required to protect the LDP-over-RSVP tunnel?

                                      • A. ABR-1 requires T-LDP sessions to all ABRs in area 0.
                                      • B. PE-1 requires a full mesh of RSVP-TE LSPs to all routers in area 1.
                                      • C. PE-1 requires fast reroute enabled on all RSVP-TE LSPs.
                                      • D. PE-1 requires T-LDP sessions to both ABR-1 and ABR-2.
                                      Reveal Solution  Discussion  0

                                      Correct Answer: B  🗳️

                                      Question #4

                                      When an OSPF adjacency is stuck in the "ExchStart" state, what is the most likely cause?

                                      • A. A OSPF Hello has not been received from the neighbor
                                      • B. The Router ID is the same on both routers
                                      • C. OSPF is not enabled on one of the routers
                                      • D. The MTU does not match on both interfaces
                                      Reveal Solution  Discussion  0

                                      Correct Answer: D  🗳️

                                      Question #5

                                      What will happen if an update is received with an unrecognized optional non-transitive attribute?

                                      • A. The router will not accept the update and send a notification.
                                      • B. The router will accept the update and ignore the attribute.
                                      • C. The router will accept the update and propagate the attribute.
                                      • D. The router will accept the update and send a notification.
                                      Reveal Solution  Discussion  0

                                      Correct Answer: B  🗳️

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