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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 |
| Available Languages: | English |
| Passing Score: | 70-80% |
| Exam Duration: | 90 minutes |
| Exam Format: | Multiple Choice, Scenario-based Questions |
| Related Certifications: | Nokia Optical Networks MPLS/GMPLS Fundamentals |
| 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: Control Plane Protocols | - RSVP-TE signaling
|
| Topic 2: Protection and Restoration | - Network resiliency mechanisms
|
| Topic 3: Optical Transport Networks | - WDM and DWDM systems
|
| Topic 4: GMPLS Fundamentals | - GMPLS architecture overview
|
Nokia GMPLS-Controlled Optical Networks Sample Questions:
1. Which of the following best describes the Soft Shutting Down state in the NFM-T?
A) An administrative maintenance state where services stay up but no new traffic can be routed over the TE-link
B) An automatic shutdown of a TE-link and all of the LSPs in the TE-link
C) A transient state where current SNCs are soft-rerouted away from the TE-link
D) A soft synchronization state where new traffic is not allowed
2. What is the purpose of preemption when establishing an LSP?
A) To measure the end-to-end latency
B) To assign the correct wavelengths depending on the type of traffic
C) To tear down an existing LSP in order to accommodate higher priority traffic
D) To pick the next hop during LSP signalling
3. Which of the following statements best describes a distributed control plane for GMPLS?
A) The control plane is active in some network nodes and not in others.
B) The network manager controls all the routing for the network.
C) The network is managed by more than one network management system.
D) Each router has software to run the GMPLS protocols and can modify the node's switching fabric.
4. What is the Link Maintenance window?
A) A wizard with commands to set links and nodes to maintenance
B) A wizard for modifying TE-link attributes
C) A centralized alarm manager
D) A centralized view of the TE-link for the operator
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: C | Question # 3 Answer: D | Question # 4 Answer: A |
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