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Nokia 4A0-205 Exam consists of 60 questions and must be completed within 90 minutes. 4A0-205 exam format includes multiple-choice questions, drag and drop questions, and matching questions. To pass the exam, candidates must achieve a score of at least 70%.

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Nokia 4A0-205 exam, also known as Nokia Optical Networking Fundamentals, is designed for professionals who want to gain knowledge about optical networking. Nokia Optical Networking Fundamentals certification is one of the most popular and in-demand certifications in the field of optical networking. The Nokia 4A0-205 Exam covers a wide range of topics related to optical networking, such as optical transmission systems, optical switching, and optical network design.

Nokia Optical Networking Fundamentals Sample Questions (Q44-Q49):

NEW QUESTION # 44
How are the EPT systems related to NFM-T when CPB is performed?

A. The systems are displayed on the CPB panel, however they cannot be individually selected as they need to run all together
B. The systems are not reported on CPB, as this Is transparent to the user and the whole network is validated and provisioned in one step
C. The systems are displayed on the CPB panel and they can be individually selected
D. The systems are not reported on CPB, but only through the Equipment Manager

Answer: C

Explanation:
The EPT systems are displayed on the CPB (Commissioning Parameter Builder) panel and they can be individually selected. This allows the user to configure the network elements in the network and provision them according to their specific requirements. The systems are not reported on CPB, but through the Equipment Manager. The Equipment Manager is the interface used to configure the network elements and the EPT systems. The NFM-T is not related to the CPB and does not affect the CPB process.

NEW QUESTION # 45
Is it possible to modify node parameters within the edit EPT menu?

A. No, this view is used to display a close-up view of the node
B. Yes, the user can apply manual changes but only for non-GMPLS nodes, as the control plane reserves node resources not editable by the user
C. Yes, but the user can modify only the node name and location
D. Yes, the user can apply manual changes directly from this view

Answer: B

Explanation:
Yes, the user can apply manual changes but only for non-GMPLS nodes, as the control plane reserves node resources not editable by the user. The edit EPT menu allows the user to view information about a node but is not used to modify node parameters. The user can only apply manual changes to non-GMPLS nodes, as the control plane reserves node resources which cannot be modified by the user.

NEW QUESTION # 46
Which of the following is an example of optical protection mechanism?

A. OSNCP (e.g., via Y-cable or OPS card)
B. Optical regeneration (e.g., back-to-back regeneration)
C. GR and SBR combined
D. GMPLS-enabled SBR

Answer: A

Explanation:
It can be implemented through the use of a Y-cable or an optical protection switch (OPS) card, which allows for the switching of traffic to a secondary path in the event of a failure on the primary path. This type of protection is commonly used to protect against fiber cuts and other types of physical layer failures in the optical transport network.

NEW QUESTION # 47
Which of the following statements is true about chromatic dispersion (CD)?

A. The fiber attenuation introduces inter-channel interference.
B. The fiber attenuation changes along the fiber, and when the light crosses these differences the CD takes place.
C. Different channels have different bandwidth and this causes different CD performances.
D. Different wavelengths propagate at different speeds within the same media and therefore different colors travel in the fiber with different speed.

Answer: D

Explanation:
Different wavelengths propagate at different speeds within the same media and therefore different colors travel in the fiber with different speed. This phenomenon is known as chromatic dispersion and causes light to spread out as it travels through the fiber over distance, leading to signal attenuation and distortion. The fiber attenuation does not introduce inter-channel interference, but it can cause attenuation of the signal. Different channels have different bandwidths, but this does not affect CD performance.

NEW QUESTION # 48
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. 200 x 15-min bins, 90 x 1-day bins and 1 raw bin.
C. 4 x 15-min bins and 1 x 1-day 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 # 49
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