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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: WDM Technology and Systems | 25% | - DWDM system architecture and building blocks - Wavelength Division Multiplexing concepts - Optical amplifiers and transmission engineering |
| Topic 2: Network Survivability and Protection | 15% | - Path and line protection schemes - Protection and restoration mechanisms - Availability and survivability concepts |
| Topic 3: Optical Network Architecture and Nodes | 20% | - Network topologies and transport architectures - Switched WDM (SWDM) principles - WDM node types and functionalities |
| Topic 4: Network Management and Operations | 20% | - Network commissioning and monitoring - NFM-T / WS-NOC management system overview - Network design with 1830 EPT / WaveSuite Planner - Performance monitoring, alarms and troubleshooting |
| Topic 5: Optical Networking Basics | 20% | - Optical signal propagation and characteristics - Fiber types, properties and transmission principles - Optical components and functions |
>> Valid Nokia 4A0-205 Exam Answers <<
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NEW QUESTION # 38
Which macro steps can be executed via CPB?
Answer: A
Explanation:
Node creation, systems validation and system provisioning. The CPB (Commissioning Parameter Builder) application is used to generate commissioning files for a Nokia 1830 Photonic Service Switch (PSS-1) and can be used to create new nodes, validate the system configuration, and provision the system with the appropriate settings and parameters. Power adjustment and generation of system loss report are not related to CPB.
NEW QUESTION # 39
With reference to trails and services, which of the following sentences is correct?
Answer: A
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 # 40
Which of the following applications is related to Wavelength Tracker tool?
Answer: C
Explanation:
Tracking the protection path for a specific wavelength. The Wavelength Tracker tool is used to track the protection path of a specific wavelength, allowing the user to quickly identify any issues that may arise and take corrective action.
Wavelength Tracker tool is a feature used to monitor and track the protection path for a specific wavelength in an optical network. It can also be used to monitor and verify the working state of the protection path, and to detect and troubleshoot protection switch events. The Wavelength Tracker tool can be used to monitor the protection path for a specific wavelength, and it can also be used to trace the end-to-end path of a wavelength through the network. This tool is typically used by network operators to monitor and troubleshoot wavelength-level issues in the network, such as protection switch events or wavelength-level performance issues.
NEW QUESTION # 41
Which of the following statements is true about chromatic dispersion (CD)?
Answer: B
Explanation:
Different wavelengths propagate at different speeds within the same media and therefore different colors travel in the fiber with different speed. This phenomenon is known as chromatic dispersion and causes light to spread out as it travels through the fiber over distance, leading to signal attenuation and distortion. The fiber attenuation does not introduce inter-channel interference, but it can cause attenuation of the signal. Different channels have different bandwidths, but this does not affect CD performance.
NEW QUESTION # 42
Which type of ports are present in the Colorless Wavelength Router (CWR)?
Answer: C
Explanation:
Comprehensive and Detailed Explanation From Nokia Optical Networking Fundamentals:
In the Nokia 1830 PSS (Photonic Service Switch) architecture, the Colorless Wavelength Router (CWR) is a specialized module used within ROADM nodes to enable "colorless" add/drop capabilities. Traditional static multiplexers, like the SFD (Static Filter Device), use fixed-wavelength ports where a specific port is hard-wired to a specific frequency (color). In contrast, a CWR allows any wavelength to be added or dropped from any of its ports.
The ports on a CWR are bi-directional. This means that a single physical port on the CWR card handles both the transmit (Tx) and receive (Rx) paths for a specific wavelength, typically connecting to a transponder's line-side interface. This bi-directional design simplifies fiber management within the shelf and is a key requirement for the "Colorless" attribute of modern flexible grids. By utilizing CWR modules, operators can remotely retune a transponder to a different frequency without needing a technician to physically move fiber patches to a different port on a multiplexer, significantly increasing operational efficiency and reducing human error during service provisioning or restoration.
NEW QUESTION # 43
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