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Nokia 4A0-205 Exam Syllabus Topics:

Section	Weight	Objectives
Network Management and Operations	20%	- NFM-T / WS-NOC management system overview - Performance monitoring, alarms and troubleshooting - Network commissioning and monitoring - Network design with 1830 EPT / WaveSuite Planner
Optical Network Architecture and Nodes	20%	- Network topologies and transport architectures - Switched WDM (SWDM) principles - WDM node types and functionalities
WDM Technology and Systems	25%	- Optical amplifiers and transmission engineering - Wavelength Division Multiplexing concepts - DWDM system architecture and building blocks
Optical Networking Basics	20%	- Optical components and functions - Optical signal propagation and characteristics - Fiber types, properties and transmission principles
Network Survivability and Protection	15%	- Availability and survivability concepts - Protection and restoration mechanisms - Path and line protection schemes

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Nokia Optical Networking Fundamentals Sample Questions (Q49-Q54):

NEW QUESTION # 49
With reference to the image, where is the OPS card placed to provide the OMSP protection?

A. Before the transponder, on the client side, towards the external device
B. After the amplifiers
C. Between the transponders and the mux/demux
D. Between the mux/demux and the amplifier

Answer: A

NEW QUESTION # 50
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. Allocate different signals to different time slots
D. Transport multiple signals transparently, onto several wavelengths, all together over one single fiber

Answer: D

NEW QUESTION # 51
How many PM bins can be stored, for each data collection point, on PSS systems?

A. 33 x 15-min bins, 8 x 1-day bins and 1 raw bin.
B. 4 x 15-min bins and 1 x 1-day bin.
C. 200 x 15-min bins, 90 x 1-day bins and 1 raw bin.
D. 120 x 15-min bins, 60 x 1-day bins and 1 raw bin.

Answer: A

Explanation:
Comprehensive and Detailed Explanation From Nokia Optical Networking Fundamentals:
Performance Monitoring (PM) is critical for maintaining the health of a Nokia 1830 PSS network. The system collects data such as FEC corrected bits, optical power levels, and ODU-layer errors. According to Nokia's standard node management architecture, each data collection point (such as an optical port or an ODU termination point) stores a specific number of historical "bins" locally on the card or the shelf controller.
The standard storage capacity for these PM statistics is 33 x 15-minute bins (covering the last 8 hours and 15 minutes of granular data) and 8 x 1-day bins (covering the last week of daily totals). Additionally, there is 1 raw bin which contains the "current" accumulating data that has not yet been shifted into a completed 15-minute or 24-hour historical bin. This allows network operators using WS-NOC (WaveSuite Network Operations Center) to retrieve recent historical performance data directly from the NE (Network Element) even if the management system was temporarily disconnected. If longer-term history is required, the management system must be configured to poll and archive these bins into its own database before they are overwritten on the hardware.

NEW QUESTION # 52
How does a Raman pump work in the 1830 specific implementation?

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

Answer: C

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 # 53
What does it take to get connected to the NSP platform?

A. A browser, the NSP IP address, and the credentials to access the web-based interface (WebUI).
B. The NSP package should be downloaded from the Nokia website and properly licensed for the specific workstation to be used.
C. A browser and the NSP IP address. Then, a browser plugin needs to be installed and the laptop rebooted before the NSP can be correctly reached.
D. A browser and the NSP IP address; and from the landing page, the NSP application should be downloaded and launched.

Answer: A

Explanation:
To get connected to the Nokia Service Platform (NSP) platform, you need a browser and the NSP IP address. Then, you need the credentials to access the web-based interface (WebUI) for the NSP platform. Once you have these, you can access the NSP platform from a web browser.

NEW QUESTION # 54
......

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