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

NEW QUESTION # 11
What is the purpose of the NFM-T deploy menu?

A. It is used to deploy new operators (administrator, observers, and so on) to access the platform.
B. It is used to deploy additional shelves to existing SWDM nodes.
C. It is used to create new network instances, such as physical connections, infrastructures and services.
D. It is used to import EPT files to deploy the network based on the EPT design.

Answer: C

Explanation:
The NFM-T (Network Functions Manager - Transport), now part of the WaveSuite Network Operations Center (WS-NOC), is the centralized management system for Nokia's optical portfolio. The Deploy menu is the primary engine for operationalizing the network. Its fundamental purpose is to create and provision new network instances, which encompasses the lifecycle of the transport infrastructure.
Specifically, this menu allows operators to establish physical connections (fiber links between nodes), build out the infrastructure (defining the topology and node roles), and most importantly, provision services (such as ODUk or Optical Channel services). While the EPT (now WaveSuite Planner) designs the network, and those files can be used as a reference, the actual "birth" of a service in the live network-mapping it from the source transponder to the destination through the required ROADM degrees-is executed via the Deploy menu. It translates the high-level intent into specific cross-connect commands sent to the individual Network Elements (NEs), ensuring that the underlying hardware is correctly configured to carry client traffic.

NEW QUESTION # 12
How does a Raman pump work in the 1830 specific implementation?

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

Answer: D

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 # 13
What is the purpose of the validate step in the EPT design process?

A. This step is used to measure optical power performances over an existing network before making changes.
B. This step is optional and is useful to verify the network element layout before going through the commission step.
C. During this step, the configuration available on the involved network elements is compared with the design provided by EPT.
D. During this step, the run design action is triggered for network design consistency check and errors fixing.

Answer: D

Explanation:
The validate step in the EPT design process is used to trigger the run design action, which is responsible for verifying the consistency of the network design and fixing any errors that may exist. During the validation process, the system will compare the configuration available on the involved network elements and the design provided by EPT, and any discrepancies will be flagged for further investigation or correction.

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

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

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 # 15
What is the metro area network?

A. The metro area network is located between access and core domains.
B. The metro area network is made of OCS/SWDM nodes only, as no pure photonic nodes are used here.
C. The metro area network is located in between two access area networks and made of photonic nodes only (no OCS/SWDM nodes are used there).
D. The metro area network is that portion of network that passes through a city to provide connections to several customers.

Answer: D

Explanation:
The Metro Area Network (MAN) is a telecommunications network that spans a metropolitan area and connects multiple local area networks (LANs) or business networks together. It typically covers an area that is larger than a LAN but smaller than a wide area network (WAN). The purpose of a MAN is to provide a high-bandwidth, low-latency communication infrastructure for businesses and other organizations in a metropolitan area.
Reference:
Cisco, "Metro Ethernet Services," https://www.cisco.com/c/en/us/solutions/service-provider/metro-ethernet-services/index.html Techopedia, "Metro Area Network (MAN)," https://www.techopedia.com/definition/26896/metro-area-network-man

NEW QUESTION # 16
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