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Nokia 4A0-205 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Optical Network Architecture and Nodes	20%	- Network topologies and transport architectures - WDM node types and functionalities - Switched WDM (SWDM) principles
Topic 2: Optical Networking Basics	20%	- Optical signal propagation and characteristics - Fiber types, properties and transmission principles - Optical components and functions
Topic 3: Network Survivability and Protection	15%	- Availability and survivability concepts - Protection and restoration mechanisms - Path and line protection schemes
Topic 4: WDM Technology and Systems	25%	- DWDM system architecture and building blocks - Optical amplifiers and transmission engineering - Wavelength Division Multiplexing concepts
Topic 5: Network Management and Operations	20%	- Performance monitoring, alarms and troubleshooting - Network design with 1830 EPT / WaveSuite Planner - Network commissioning and monitoring - NFM-T / WS-NOC management system overview

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Nokia Optical Networking Fundamentals Sample Questions (Q22-Q27):

NEW QUESTION # 22
Which of the following statements is true?

A. Logs report both active and historical events.
B. Logs report a real time status of the node.
C. Alarms and conditions report a real time status of the node.
D. Alarms and conditions report only historical status of the node.

Answer: A

Explanation:
A log is a record of events that have occurred within a system, such as a network device or an application. Logs can include information about system activity, configuration changes, and error messages. They can be used for troubleshooting, auditing, and compliance purposes. Logs can report both active (real-time) and historical events that have occurred within a system.
Alarms and conditions, on the other hand, are used to notify operators of real-time status of the node, such as when a threshold is breached or when a specific event occurs. Alarms and conditions are typically used to provide real-time notifications of potential problems or issues, while logs are used to provide a historical record of what has occurred.

NEW QUESTION # 23
What is the purpose of the validate step in the EPT design process?

A. During this step, the run design action is triggered for network design consistency check and errors fixing.
B. This step is optional and is useful to verify the network element layout before going through the commission step.
C. This step is used to measure optical power performances over an existing network before making changes.
D. During this step, the configuration available on the involved network elements is compared with the design provided by EPT.

Answer: A

Explanation:
The validate step in the EPT design process is used to trigger the run design action, which is responsible for verifying the consistency of the network design and fixing any errors that may exist. During the validation process, the system will compare the configuration available on the involved network elements and the design provided by EPT, and any discrepancies will be flagged for further investigation or correction.

NEW QUESTION # 24
WDM allows transmission systems to:

A. Increase the bit rate of each client signal by spreading it over multiple wavelengths
B. Transport multiple signals transparently, onto several wavelengths, all together over one single fiber
C. Share a single signal among multiple fibers doing load balancing, and thus increasing the reliability of the optical transmission
D. Allocate different signals to different time slots

Answer: B

Explanation:
WDM (Wavelength Division Multiplexing) allows transmission systems to transport multiple signals transparently, onto several wavelengths, all together over one single fiber. This allows for increased capacity, as many different signals can be transmitted at the same time and along the same fiber. Other advantages include improved signal integrity and reduced signal attenuation.

NEW QUESTION # 25
What is the purpose of the NFM-T deploy menu?

A. It is used to deploy new operators (administrator, observers, and so on) to access the platform.
B. It is used to create new network instances, such as physical connections, infrastructures and services.
C. It is used to deploy additional shelves to existing SWDM nodes.
D. It is used to import EPT files to deploy the network based on the EPT design.

Answer: B

Explanation:
The NFM-T (Network Functions Manager - Transport), now part of the WaveSuite Network Operations Center (WS-NOC), is the centralized management system for Nokia's optical portfolio. The Deploy menu is the primary engine for operationalizing the network. Its fundamental purpose is to create and provision new network instances, which encompasses the lifecycle of the transport infrastructure.
Specifically, this menu allows operators to establish physical connections (fiber links between nodes), build out the infrastructure (defining the topology and node roles), and most importantly, provision services (such as ODUk or Optical Channel services). While the EPT (now WaveSuite Planner) designs the network, and those files can be used as a reference, the actual "birth" of a service in the live network-mapping it from the source transponder to the destination through the required ROADM degrees-is executed via the Deploy menu. It translates the high-level intent into specific cross-connect commands sent to the individual Network Elements (NEs), ensuring that the underlying hardware is correctly configured to carry client traffic.

NEW QUESTION # 26
With reference to trails and services, which of the following sentences is correct?

A. A trail can interconnect three ports, while a service always two.
B. Trails are transported over services; that is, trails are clients with respect to services.
C. A service is always associated to a single wavelength, while a trail can involve multiple wavelengths.
D. Services are transported over trails; that is, services are clients with respect to trails.

Answer: D

Explanation:
Services are transported over trails; that is, services are clients with respect to trails. A service is a logical connection that is used to transport data from one point to another. It is created over a trail, which is a physical connection that is established by using multiple wavelengths. As such, services are clients with respect to trails, as they are transported over them.

NEW QUESTION # 27
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