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Updated: Sep 11, 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 |
| Exam Format: | Scenario-based Questions, Multiple Choice |
| Related Certifications: | MPLS/GMPLS Fundamentals Nokia Optical Networks |
| Available Languages: | English |
| Exam Duration: | 90 minutes |
| Passing Score: | 70-80% |
| 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 | - OTN architecture
|
| Control Plane Protocols | - RSVP-TE signaling
|
| GMPLS Fundamentals | - MPLS extensions for optical networks
|
| Protection and Restoration | - Failure recovery strategies
|
Nokia GMPLS-Controlled Optical Networks Sample Questions:
Question 1
How do you configure the Trail template in NFM-T for an Uplink board (such as 2UC400) in an MRN network with LO and LI restoration capabilities?
A. Check the Logical Link box
Set the Port Type to Unterminated Check the ASON Routed box Check the ASON Tunnel box
B. Uncheck the Logical Link box Set the Port Type to Terminated Check the ASON Routed box Uncheck the ASON Tunnel box
C. Check the Logical Link box
Set the Port Type to Unterminated Check the ASON Routed box Uncheck the ASON Tunnel box
D. Uncheck the Logical Link box Set the Port Type to Terminated Check the ASON Routed box Check the ASON Tunnel box
Question 2
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 automatic shutdown of a TE-link and all of the LSPs in the TE-link
C. An administrative maintenance state where services stay up but no new traffic can be routed over the TE-link
D. A transient state where current SNCs are soft-rerouted away from the TE-link
Question 3
What is Tunnel Property Heritage?
A. Maximum allowed bandwith is propagated from HO to LO LSPs.
B. The hierarchy tunnels cannot be nested unless they share the same properties.
C. Cost, SRLG, and Color properties are propagated from HO to LO LSPs.
D. A restored tunnel inherits the ODUk flows.
Question 4
What is the GMRE notify address?
A. The LMP Control Channel ID. This field contains the IPv4 address of the ingress LER as a global unique identifier
B. The email exchange server to notify the operators of network failures
C. The OSPF-TE broadcast IP used to flood the link adjacency information
D. An IP address used to signal failures on downstream nodes upstream to the head node
Solutions:
| Question 1 Answer: C | Question 2 Answer: C | Question 3 Answer: C | Question 4 Answer: D |
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