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Nokia Optical Networking Fundamentals Sample Questions (Q11-Q16):

NEW QUESTION # 11
How does a Raman pump work in the 1830 specific implementation?

• A. The pump light travels in the same direction of the signal, amplifying it while it flows in the fiber towards the following node.
• B. The pump light travels in the opposite direction of the signal to be amplified, amplifying it while it arrives from the adjacent node.
• C. The amplification is done simultaneously for all channels as they enter the board.
• D. As the incoming signal power increase, the gain of the amplifier is reduced.

Answer: B

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 # 12
Is it possible to open and manage EPT designs that are created with different releases than the release installed on the local workstation?

• A. Only designs created with the current release can be opened and edited.
• B. Designs created with an older release can be opened by a current release but cannot make changes.
• C. No restrictions are imposed on the software release.
• D. Only designs created with current and older releases can be opened and edited.

Answer: D

Explanation:
It is possible to open and manage EPT designs that are created with different releases than the release installed on the local workstation, however only designs created with current and older releases can be opened and edited. Designs created with an older release can be opened by a current release but changes cannot be made.

NEW QUESTION # 13
How are the EPT systems related to NFM-T when CPB is performed?

• A. The systems are displayed on the CPB panel, however they cannot be individually selected as they need to run all together
• B. The systems are not reported on CPB, as this Is transparent to the user and the whole network is validated and provisioned in one step
• C. The systems are displayed on the CPB panel and they can be individually selected
• D. The systems are not reported on CPB, but only through the Equipment Manager

Answer: C

Explanation:
The EPT systems are displayed on the CPB (Commissioning Parameter Builder) panel and they can be individually selected. This allows the user to configure the network elements in the network and provision them according to their specific requirements. The systems are not reported on CPB, but through the Equipment Manager. The Equipment Manager is the interface used to configure the network elements and the EPT systems. The NFM-T is not related to the CPB and does not affect the CPB process.

NEW QUESTION # 14
What is the meaning of first, second, and third window in the optical fiber propagation context?

• A. These three windows are three different angles of incidence of the light injected by the laser into the fiber.
• B. Different optical transmission windows correspond to different safety requirements and rules for the related lasers operating with these windows.
• C. These windows correspond to three different minimum and maximum optical power levels used for optical transmission.
• D. These windows are three different wavelength intervals where the WDM optical transmission occurs.

Answer: D

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 # 15
Where can the user set the long-haul WT decoder parameter, when designing a network with EPT?

• A. In the NE parameters
• B. In the network parameters
• C. In the optimization parameters
• D. In the audit menu

Answer: A

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 # 16
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