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Nokia 4A0-205 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: WDM Technology and Systems	25%	- DWDM system architecture and building blocks - Optical amplifiers and transmission engineering - Wavelength Division Multiplexing concepts
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%	- WDM node types and functionalities - Switched WDM (SWDM) principles - Network topologies and transport architectures
Topic 4: 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
Topic 5: Optical Networking Basics	20%	- Optical signal propagation and characteristics - Fiber types, properties and transmission principles - Optical components and functions

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Nokia Optical Networking Fundamentals Sample Questions (Q28-Q33):

NEW QUESTION # 28
How does a Raman pump work in the 1830 specific implementation?

A. The pump light travels in the opposite direction of the signal to be amplified, amplifying it while it arrives from the adjacent node.
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 amplification is done simultaneously for all channels as they enter the board.

Answer: A

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 # 29
What is the purpose of the NFM-T deploy menu?

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

Answer: A

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 # 30
By using the EPT run design command, are the previously designed elements removed?

A. Not the design is always progressive, on top of the previous design.
B. It depends, the user is prompted to choose whether to delete or leave the previously designed elements.
C. Yes, they are but only the first time the command is launched as - for future design phases - the existing packs need to keep the same slotting.
D. Yes, although this is not happening in case of GMPLS-enabled nodes because existing slots cannot change as they are controlled by another manager (GMRE).

Answer: B

Explanation:
The EPT run design command can remove previously designed elements, but the user is prompted to choose whether to delete them or leave them intact. This allows the user to progress their design while still keeping the existing elements in place. If the user selects to leave the existing elements, then they will remain in the same slots. If GMPLS nodes are used, the existing slots cannot change as they are controlled by another manager (GMRE).

NEW QUESTION # 31
Is it possible to mix PSS-24x and PSS-8x shelves In an SWDM configuration?

A. Yes, but the PSS-8X shelf must be configured as a master
B. No, as they are not compatible and cannot be used within the same node
C. Yes, but the PSS-24X shelf must be configured as a master
D. Yes, as both can be equipped within the same node

Answer: B

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 # 32
In which window(s) does the attenuation reach its minimum peak?

A. Third window (1550 nm)
B. Second window (1300 nm)
C. Both first and second windows
D. First window (850 nm)

Answer: A

Explanation:
The third window (1550 nm) is where the attenuation reaches its minimum peak. This is because the materials used in fiber optic cables have minimal absorption in this wavelength range. The first and second windows (850 nm and 1300 nm respectively) have higher attenuation due to the materials used in the fiber optic cables.

NEW QUESTION # 33
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