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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 |
| Network Management and Operations | 20% | - Network design with 1830 EPT / WaveSuite Planner - NFM-T / WS-NOC management system overview - Network commissioning and monitoring - Performance monitoring, alarms and troubleshooting |
| Network Survivability and Protection | 15% | - Availability and survivability concepts - Protection and restoration mechanisms - Path and line protection schemes |
| WDM Technology and Systems | 25% | - Optical amplifiers and transmission engineering - DWDM system architecture and building blocks - Wavelength Division Multiplexing concepts |
| Optical Network Architecture and Nodes | 20% | - Switched WDM (SWDM) principles - WDM node types and functionalities - Network topologies and transport architectures |
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NEW QUESTION # 61
Which mechanisms can be put in place to increase network survivability?
Answer: A
Explanation:
There are two main mechanisms that can be put in place to increase network survivability: protection and restoration. Protection involves pre-allocating and reserving backup resources so that they are ready in case of a failure. Restoration involves allocating backup resources upon failure and using a 1+1 protection mechanism to recover each trail. This ensures that the network is able to re-route traffic in the event of a failure, increasing the overall survivability of the network.
NEW QUESTION # 62
What is the meaning of first, second, and third window in the optical fiber propagation context?
Answer: A
Explanation:
In optical fiber propagation context, the first, second, and third window refer to different wavelength intervals where the WDM (Wavelength Division Multiplexing) optical transmission occurs.
The first window is the lowest loss window and is typically in the range of 1300-1324nm. This is the most commonly used window for long-haul communications.
The second window is the 1550 nm window and is the most widely used window for long-haul and ultra-long-haul communications. This window has a lower attenuation than the first window, but it also has more dispersion, which can limit the maximum transmission distance.
The third window is the range of 1625-1675 nm, it is also called the L-band window. This window has lower attenuation than the first and second window but its usage is limited due to the high cost of equipment and lack of commercial devices.
These windows are used in WDM systems to increase the capacity of the fiber by transmitting multiple channels of data at different wavelengths on the same fiber.
A,C,D are not correct as they are not related to the meaning of first, second, and third window in the optical fiber propagation context.
Reference:
Nokia Optical Networking Fundamentals, Nokia Press (ISBN:978-1-4822-8109-4)
https://www.nokia.com/networks/solutions/optical-networking/
https://en.wikipedia.org/wiki/Wavelength-division_multiplexing
NEW QUESTION # 63
Which macro steps can be executed via CPB?
Answer: D
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 # 64
WDM allows transmission systems to:
Answer: D
NEW QUESTION # 65
How does a Raman pump work in the 1830 specific implementation?
Answer: C
Explanation:
In Raman amplification, a pump laser is used to excite the Raman-active molecules in the fiber, which then amplifies the signal light as it travels in the opposite direction. In the 1830 specific implementation, the pump laser is typically a high-power laser that is launched into the fiber in the opposite direction to the signal. The pump light interacts with the Raman-active molecules in the fiber, which then amplifies the signal light as it travels in the opposite direction. This allows the Raman pump to provide a gain that increases with distance, which can be used to compensate for the loss of signal power as it travels through the fiber.
NEW QUESTION # 66
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