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Nokia 4A0-205 Exam Syllabus Topics:

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 Management and Operations	20%	- Performance monitoring, alarms and troubleshooting - NFM-T / WS-NOC management system overview - Network design with 1830 EPT / WaveSuite Planner - Network commissioning and monitoring
Topic 3: Optical Networking Basics	20%	- Fiber types, properties and transmission principles - Optical signal propagation and characteristics - Optical components and functions
Topic 4: WDM Technology and Systems	25%	- Wavelength Division Multiplexing concepts - Optical amplifiers and transmission engineering - DWDM system architecture and building blocks
Topic 5: Network Survivability and Protection	15%	- Protection and restoration mechanisms - Availability and survivability concepts - Path and line protection schemes

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Nokia Optical Networking Fundamentals Sample Questions (Q53-Q58):

NEW QUESTION # 53
WDM allows transmission systems to:

A. Increase the bit rate of each client signal by spreading it over multiple wavelengths
B. Share a single signal among multiple fibers doing load balancing, and thus increasing the reliability of the optical transmission
C. Transport multiple signals transparently, onto several wavelengths, all together over one single fiber
D. Allocate different signals to different time slots

Answer: C

Explanation:
WDM (Wavelength Division Multiplexing) allows transmission systems to transport multiple signals transparently, onto several wavelengths, all together over one single fiber. This allows for increased capacity, as many different signals can be transmitted at the same time and along the same fiber. Other advantages include improved signal integrity and reduced signal attenuation.

NEW QUESTION # 54
Which statement is correct about node synchronization?

A. Full synchronization retrieves all items from the node (NE parameters. Ports, Alarms, Internal Links, etc)
B. Full synchronization retrieves the correlated alarms from the node
C. Node synchronization is executed to align the time of the node to the time of the NFM-T platform
D. Node synchronization is executed to test the reachability of a node

Answer: A

Explanation:
Node synchronization is a process of keeping the NFM-T database in sync with the nodes in the network. The synchronization process will download all the items from the node, including NE parameters, ports, alarms, internal links, etc., to the NFM-T database. This ensures that the NFM-T database is up to date and the network is running efficiently.

NEW QUESTION # 55
What is the function of a pre-amplifier in an optical network?

A. Through the pre-amplifier, the optical signal is amplified both the receiver side and at the transmitter side.
B. Through the pre-amplifier, the optical signal is amplified at the receiver side after it travels along the fiber from another node.
C. Through the pre-amplifier, the optical signal is amplified within the node internally to recover internal losses due, for instance, to cascaded filters.
D. Through the pre-amplifier, the optical signal is amplified at the transmitter side before it is sent to the line span.

Answer: D

Explanation:
A pre-amplifier is an optical amplifier that is used to boost the power of the received optical signal before it is detected by the receiver in an optical communication system. This is done to overcome the loss of power that occurs as the signal travels through the optical fiber and to ensure that the receiver can detect the signal. The pre-amplification stage is typically located close to the receiver in order to minimize the distance that the signal has to travel between the amplifier and the receiver, which helps to reduce the noise and distortion in the signal.

NEW QUESTION # 56
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 audit menu
D. In the optimization parameters

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 # 57
How is it possible to check the activation status of GMRE on a node?

A. The GMRE activation status is reflected on the color of the icon representing the node
B. The ControlPlane status column on the node list displays the GMRE status for the selected node
C. The GMRE activation status is reported in the supervision state column on the node list
D. The GMRE reachability can be tested via ping request from NFM-T

Answer: C

Explanation:
The GMRE activation status is reported in the supervision state column on the node list. The supervision state column displays the GMRE status of the node, which is either "Activated" or "Not Activated". This allows the user to quickly check the GMRE activation status of a node without having to ping the node from the NFM-T platform.

NEW QUESTION # 58
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