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Updated: Aug 02, 2026
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Nokia 4A0-220 Exam Overview:
| Certification Vendor: | Nokia |
| Exam Name: | GMPLS-Controlled Optical Networks |
| Exam Number: | 4A0-220 |
| Exam Format: | Multiple Choice, Scenario-based Questions |
| Related Certifications: | Nokia Optical Networks MPLS/GMPLS Fundamentals |
| Exam Duration: | 90 minutes |
| Available Languages: | English |
| Passing Score: | 70-80% |
| Real Exam Qty: | 60 |
| 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 |
|---|---|
| Topic 1: Protection and Restoration | - Failure recovery strategies
|
| Topic 2: Optical Transport Networks | - OTN architecture
|
| Topic 3: GMPLS Fundamentals | - GMPLS architecture overview
|
| Topic 4: 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 signals resource reservation information to upstream nodes.
B) It indicates the LSP flow direction.
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 is the definition of Constrained Shortest Path First (CSPF)?
A) It is the SPF algorithm applied for low latency LSPs.
B) It is the SPF algorithm applied to low bandwidth LSPs.
C) It is the 5FP algorithm applied after pruning links that do not meet the specified constraints.
D) It is a combination between OSPF-TE and RSVP-TE.
3. When should two physical connections belong to the same SRG?
A) When they are fully disjoint respective to the risk of failure
B) When they are both selected during the setup process
C) When one is the protection of the other
D) When they share the same risk of failure
4. Which of the following best describes the Soft Shutting Down state in the NFM-T?
A) A transient state where current SNCs are soft-rerouted away from the TE-link
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 soft synchronization state where new traffic is not allowed
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: C | Question # 3 Answer: D | Question # 4 Answer: B |
Nokia 4A0-220 Exam Overview:
| Certification Vendor: | Nokia |
| Exam Name: | GMPLS-Controlled Optical Networks |
| Exam Number: | 4A0-220 |
| Exam Format: | Multiple Choice, Scenario-based Questions |
| Related Certifications: | Nokia Optical Networks MPLS/GMPLS Fundamentals |
| Exam Duration: | 90 minutes |
| Available Languages: | English |
| Passing Score: | 70-80% |
| Real Exam Qty: | 60 |
| 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 |
|---|---|
| Topic 1: Protection and Restoration | - Failure recovery strategies
|
| Topic 2: Optical Transport Networks | - OTN architecture
|
| Topic 3: GMPLS Fundamentals | - GMPLS architecture overview
|
| Topic 4: 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 signals resource reservation information to upstream nodes.
B) It indicates the LSP flow direction.
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 is the definition of Constrained Shortest Path First (CSPF)?
A) It is the SPF algorithm applied for low latency LSPs.
B) It is the SPF algorithm applied to low bandwidth LSPs.
C) It is the 5FP algorithm applied after pruning links that do not meet the specified constraints.
D) It is a combination between OSPF-TE and RSVP-TE.
3. When should two physical connections belong to the same SRG?
A) When they are fully disjoint respective to the risk of failure
B) When they are both selected during the setup process
C) When one is the protection of the other
D) When they share the same risk of failure
4. Which of the following best describes the Soft Shutting Down state in the NFM-T?
A) A transient state where current SNCs are soft-rerouted away from the TE-link
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 soft synchronization state where new traffic is not allowed
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: C | Question # 3 Answer: D | Question # 4 Answer: B |
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