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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Optical Network Architecture and Nodes | 20% | - Network topologies and transport architectures - Switched WDM (SWDM) principles - WDM node types and functionalities |
| Topic 2: Network Survivability and Protection | 15% | - Availability and survivability concepts - Protection and restoration mechanisms - Path and line protection schemes |
| Topic 3: WDM Technology and Systems | 25% | - Wavelength Division Multiplexing concepts - Optical amplifiers and transmission engineering - DWDM system architecture and building blocks |
| Topic 4: Optical Networking Basics | 20% | - Fiber types, properties and transmission principles - Optical components and functions - Optical signal propagation and characteristics |
| Topic 5: 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 |
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NEW QUESTION # 13
Is it possible to mix PSS-24x and PSS-8x shelves In an SWDM configuration?
Answer: A
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 # 14
What is a Shared Risk Group (SRG)?
Answer: B
Explanation:
According to the Nokia Optical Networking documentation, a Shared Risk Group (SRG) is defined as "a set of network resources that share a common failure risk. When a resource in an SRG fails, the other resources in the group are also affected." This can include fibers, boards, nodes, and other network resources. The SRG concept is used in network design and protection mechanisms to ensure survivability and minimal impact on service in case of a failure.
NEW QUESTION # 15
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 # 16
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 # 17
Is it possible to select the fiber type independently for each segment while designing a network in EPT?
Answer: C
Explanation:
Yes, during the segment creation phase or editing. It is possible to select the fiber type independently for each segment while designing a network in EPT. This can be done during the segment creation phase or when editing an existing segment. This allows for more flexibility when designing the network and allows for more efficient use of resources.
NEW QUESTION # 18
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