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Nokia 4A0-220 Exam Syllabus Topics:

Section	Objectives
Topic 1: Control Plane Protocols	- RSVP-TE signaling 1. Path setup and teardown 2. Resource reservation - Routing protocols 1. OSPF-TE extensions 2. IS-IS traffic engineering
Topic 2: GMPLS Fundamentals	- GMPLS architecture overview 1. Control plane vs data plane 2. Label switching technologies - MPLS extensions for optical networks 1. Traffic engineering principles 2. LSP concepts in optical domain
Topic 3: Optical Transport Networks	- OTN architecture 1. Mapping and grooming 2. OTUk/ODUk structure - WDM and DWDM systems 1. Optical spectrum management 2. Channel multiplexing
Topic 4: Protection and Restoration	- Network resiliency mechanisms 1. Fast reroute mechanisms 2. 1+1 protection schemes - Failure recovery strategies 1. Traffic restoration techniques 2. Link/node failure recovery