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Updated: Sep 14, 2026
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Nokia 4A0-220 Exam Overview:
| Certification Vendor: | Nokia |
|---|---|
| Exam Name: | GMPLS-Controlled Optical Networks |
| Exam Number: | 4A0-220 |
| Passing Score: | 70-80% |
| Related Certifications: | Nokia Optical Networks MPLS/GMPLS Fundamentals |
| Available Languages: | English |
| Real Exam Qty: | 60 |
| Exam Format: | Multiple Choice, Scenario-based Questions |
| Exam Duration: | 90 minutes |
| 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: Optical Transport Networks | - OTN architecture
|
| Topic 2: GMPLS Fundamentals | - MPLS extensions for optical networks
|
| Topic 3: Protection and Restoration | - Failure recovery strategies
|
| Topic 4: Control Plane Protocols | - Routing protocols
|
Nokia GMPLS-Controlled Optical Networks Sample Questions:
How do you add a 3R resource to the NPA in NFM-T?
- A. The 3R is added in the Node panel and automatically added to the NPA
- B. The resource is discovered automatically
- C. The 3R is added to the NPA through the Constraint Wizard
- D. The trail is provisioned with 3R constraints and discovered automatically
Correct Answer: C 🗳️
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Which of the following is not a GMPLS protocol?
- A. SFD
- B. OSPF-TE
- C. RSVP-TE
- D. LMP
Correct Answer: A 🗳️
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What does an SNC state of lower case "n" mean for 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
Correct Answer: C 🗳️
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Which of the following statements about the Wait for Server Restoration (WSR) parameter in the MRN is correct?
- A. When WSR is false, the LI services do not wait for the LO restoration and restore through LI switching.
- B. When WSR is true, the LO optical channel remains in the link until the failure is fixed.
- C. When WSR is false, if the failed optical channel can be restored at LO, the data traffic stays in the tunnel.
- D. When WSR is true, the LO channels do not wait for the LI services to restore.
Correct Answer: A 🗳️
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