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| Section | Weight | Objectives |
|---|---|---|
| Optical Networking Basics | 20% | - Optical components and functions - Fiber types, properties and transmission principles - Optical signal propagation and characteristics |
| Optical Network Architecture and Nodes | 20% | - Network topologies and transport architectures - Switched WDM (SWDM) principles - WDM node types and functionalities |
| Network Management and Operations | 20% | - Performance monitoring, alarms and troubleshooting - Network commissioning and monitoring - NFM-T / WS-NOC management system overview - Network design with 1830 EPT / WaveSuite Planner |
| WDM Technology and Systems | 25% | - Wavelength Division Multiplexing concepts - Optical amplifiers and transmission engineering - DWDM system architecture and building blocks |
| Network Survivability and Protection | 15% | - Protection and restoration mechanisms - Availability and survivability concepts - Path and line protection schemes |
>> 4A0-205 Detailed Answers <<
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NEW QUESTION # 35
Which of the following statements is true?
Answer: B
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 # 36
What is the main function of an optical amplifier?
Answer: B
Explanation:
Comprehensive and Detailed Explanation From Nokia Optical Networking Fundamentals:
The primary function of an optical amplifier in a WDM system is to provide gain to the optical signal to compensate for optical power attenuation (loss) that occurs as light travels through the optical fiber. As photons travel through kilometers of silica fiber, their energy is absorbed or scattered, leading to a reduction in signal strength. To ensure the signal reaches its destination with sufficient power for the receiver to detect it, amplifiers like the EDFA (Erbium-Doped Fiber Amplifier) or Raman amplifiers are placed at strategic intervals along the fiber span.
It is crucial to distinguish this from Option D; modern optical amplifiers perform purely optical amplification, meaning the signal stays in the photonic domain without being converted to electricity (O-E-O). While some specialized amplifiers (like the RA2P) might interact with other parameters, their fundamental job is power restoration. Furthermore, while amplifiers are essential for a network's reach, they do not compensate for chromatic dispersion-that is the job of Dispersion Compensation Modules (DCM) or electronic dispersion compensation (EDC) in coherent transponders-nor do they demodulate signals, which is the role of the receiver in a transponder.
NEW QUESTION # 37
Where can the user set the long-haul WT decoder parameter, when designing a network with EPT?
Answer: B
Explanation:
The long-haul WT decoder parameter can be set in the NE parameters when designing a network with EPT. This parameter is used to adjust the sensitivity of the decoder and can help to improve the accuracy of the measurements for long-haul WTs.
The Network Element (NE) parameters in EPT (Element Planning Tool) are used to configure various settings and options for the network elements in the network. The long-haul WT decoder parameter is one such setting that can be configured in the NE parameters section. The user can access the NE parameters by navigating to the NE Parameters menu within the EPT interface. The user can then select the appropriate network element and modify the settings as needed. This information can be found in the Nokia guide for EPT.
NEW QUESTION # 38
Is it possible to mix PSS-24x and PSS-8x shelves In an SWDM configuration?
Answer: B
Explanation:
No, it is not possible to mix PSS-24x and PSS-8x shelves in an SWDM (Short Wavelength Division Multiplexing) configuration. The two shelves are not compatible, and cannot be used within the same node.
NEW QUESTION # 39
How is it possible to check the activation status of GMRE on a node?
Answer: D
Explanation:
The GMRE activation status is reported in the supervision state column on the node list. The supervision state column displays the GMRE status of the node, which is either "Activated" or "Not Activated". This allows the user to quickly check the GMRE activation status of a node without having to ping the node from the NFM-T platform.
NEW QUESTION # 40
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