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Updated: Jul 31, 2026
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Nokia 4A0-220 Exam Overview:
| Certification Vendor: | Nokia |
| Exam Name: | GMPLS-Controlled Optical Networks |
| Exam Number: | 4A0-220 |
| Real Exam Qty: | 60 |
| Passing Score: | 70-80% |
| Related Certifications: | Nokia Optical Networks MPLS/GMPLS Fundamentals |
| Available Languages: | English |
| Exam Duration: | 90 minutes |
| Exam Format: | Multiple Choice, Scenario-based Questions |
| Recommended Training: | Nokia Optical Networking Learning Paths |
| Exam Registration: | Nokia Training and Certification Portal |
| Sample Questions: | Nokia 4A0-220 Sample Questions |
| Exam Way: | Online or test center-based (varies by region and provider) |
| Pre Condition: | Recommended knowledge of IP/MPLS networking and basic optical transport concepts |
| Official Syllabus URL: | https://www.nokia.com/networks/training/ |
Nokia 4A0-220 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Optical Transport Networks | - WDM and DWDM systems
|
| GMPLS Fundamentals | - MPLS extensions for optical networks
|
| Protection and Restoration | - Failure recovery strategies
|
| Control Plane Protocols | - Routing protocols
|
Nokia GMPLS-Controlled Optical Networks Sample Questions:
1. What is the purpose of the Upstream Label Object in RSVP-TE?
A) It indicates the LSP flow direction.
B) It signals resource reservation information to upstream nodes.
C) It allows for a label to be suggested to provision bidirectional LSPs.
D) It allows a node to restrict the labels that may be used downstream.
2. What does the SNC state with an uppercase "N" mean in a resource in NFM-T?
A) Indicates it's currently using the Nominal resource assigned to it
B) Indicates if s a higher alarm state level
C) Indicates the nominal resource on a TE-link that is not in use
D) Indicates it's using a link other than the Nominal
3. What is a Nominal Route in a GMPLS network?
A) The nominal power path
B) The best possible path at the moment
C) The least cost path according to the routing protocol
D) The optimal path that meets TE constraints
4. Which of the following best describes the Soft Shutting Down state in the NFM-T?
A) A soft synchronization state where new traffic is not allowed
B) An administrative maintenance state where services stay up but no new traffic can be routed over the TE-link
C) An automatic shutdown of a TE-link and all of the LSPs in the TE-link
D) A transient state where current SNCs are soft-rerouted away from the TE-link
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: A | Question # 3 Answer: D | Question # 4 Answer: B |
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