- Exam Code: 4A0-220
- Exam Name: Nokia GMPLS-Controlled Optical Networks
- Updated: Aug 20, 2026
- Q & A: 40 Questions and Answers
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| Section | Objectives |
|---|---|
| Topic 1: Protection and Restoration | - Failure recovery strategies
|
| Topic 2: Control Plane Protocols | - Routing protocols
|
| Topic 3: GMPLS Fundamentals | - GMPLS architecture overview
|
| Topic 4: Optical Transport Networks | - OTN architecture
|
1. What is a Label Switched Path (LSP)?
A) A switched protection path
B) A High Order Container for client signal
C) A protocol used by nodes to exchange information about the state of labels
D) The path created by MPLS nodes
2. Which of the following is not a key feature of GMPLS?
A) Restoration
B) Resource optimization
C) Fast protection
D) Self-discovery
3. What is the Commissioning File in GMRE nodes?
A) A control checklist for the operator
B) A file with target values that determine whether a given LSP is possible
C) A file with commissioned GMRE nodes for NPA implementation
D) A file of optical impairment parameters for power balance
4. Which categories of protocols are included in the GMPLS technology?
A) Routing, signaling, and link management
B) Routing, grooming, and signaling
C) Signaling, routing, and forwarding
D) Link management, signaling, and switching
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: B | Question # 3 Answer: B | Question # 4 Answer: A |
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