4A0-205 Examsfragen - 4A0-205 Zertifizierungsantworten

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Nokia 4A0-205 Exam Overview:

Certification Vendor:	Nokia
Exam Name:	Nokia Optical Networking Fundamentals
Exam Number:	4A0-205
Exam Duration:	90 minutes
Available Languages:	English
Related Certifications:	Nokia Optical Network Professional Certification Nokia Optical Network Services Expert Certification Nokia Certified Optical Network Automation Professional
Real Exam Qty:	40
Exam Format:	Multiple Choice
Exam Price:	$125 USD
Sample Questions:	Nokia 4A0-205 Sample Questions
Exam Way:	Pearson VUE testing center or online proctored exam.
Pre Condition:	No mandatory prerequisites.
Official Syllabus URL:	https://www.nokia.com/networks/training/onc/exams/optical-networking-fundamentals/

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Nokia Optical Networking Fundamentals 4A0-205 Prüfungsfragen mit Lösungen (Q36-Q41):

36. Frage
What is the meaning of first, second, and third window in the optical fiber propagation context?

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

Antwort: D

Begründung:
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

37. Frage
What is the purpose of the validate step in the EPT design process?

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

Antwort: C

Begründung:
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.

38. Frage
What is the purpose of the NFM-T node synchronization?

A. The partial or full node synchronization allows several entities/items defined at node level to be retrieved into the NFM-T database (upload).
B. The partial or full node synchronization allows several entities/items defined at EPT level to be retrieved into the NFM-T database (upload from design).
C. The partial or full node synchronization allows several entities/items defined at NFM-T level to be exported into an XML file, to be used as input for EPT (download to design).
D. The partial or full node synchronization allows several entities/items defined at NFM-T level to be written into the node database (download).

Antwort: D

Begründung:
This is done in order to keep the NFM-T database in sync with the nodes in the network. The synchronization process allows the NFM-T to keep track of any changes that are made to the nodes, such as new nodes added, nodes removed, and so on. By synchronizing the node database with the NFM-T, network administrators can ensure that their network is up to date and running efficiently.

39. Frage
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 import EPT files to deploy the network based on the EPT design.
C. It is used to deploy additional shelves to existing SWDM nodes.
D. It is used to deploy new operators (administrator, observers, and so on) to access the platform.

Antwort: A

Begründung:
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.

40. Frage
Which of the following sentences about FlexGrid is false?

A. FlexGrid systems use specific sets of boards. Old generation WDM systems need to be upgraded to support FlexGrid.
B. Channels in FlexGrid systems are allocated with a granularity of 27.5GHz.
C. The FlexGrid is currently standardized by ITU-T.
D. FlexGrid allows a more efficient channel spacing.

Antwort: A

Begründung:
FlexGrid is a flexible grid technology that allows for variable channel spacing and bandwidth allocation. It uses the same sets of boards as the traditional fixed grid systems and it does not require upgrading the old generation WDM systems.
Reference:
"Flexible Grid Optical Networks: From Concepts to Realizations" by Diomidis S. Michalopoulos and George K. Karagiannidis
"Flexible Grid and Flexible Spectrum Optical Networks" by Diomidis S. Michalopoulos and George K. Karagiannidis
"Flexible Grid Optical Networks" by Diomidis S. Michalopoulos and George K. Karagiannidis

41. Frage
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