시험준비에가장좋은4A0-205인기자격증시험덤프최신버전덤프

Nokia 4A0-205 시험을 보시는 분이 점점 많아지고 있는데 하루빨리 다른 분들보다 Nokia 4A0-205시험을 패스하여 자격증을 취득하는 편이 좋지 않을가요? 자격증이 보편화되면 자격증의 가치도 그만큼 떨어지니깐요. Nokia 4A0-205덤프는 이미 많은분들의 시험패스로 검증된 믿을만한 최고의 시험자료입니다.

Nokia 4A0-205 Exam Overview:

Certification Vendor:	Nokia
Exam Name:	Nokia Optical Networking Fundamentals
Exam Number:	4A0-205
Related Certifications:	Nokia Certified Optical Network Automation Professional Nokia Optical Network Professional Certification Nokia Optical Network Services Expert Certification
Real Exam Qty:	40
Exam Format:	Multiple Choice
Exam Price:	$125 USD
Exam Duration:	90 minutes
Available Languages:	English
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 4A0-205 시험은 광 네트워킹 분야에서 전문성을 증명하고자 하는 개인들이나 해당 분야에서 경력을 쌓고자 하는 개인들을 위해 디자인된 시험입니다. 이 시험은 통신 산업에서 일하는 네트워크 엔지니어, 네트워크 아키텍트 및 네트워크 운영자들에게 특히 적합합니다. 이 시험을 통과함으로써, 후보자들은 Nokia의 광 네트워킹 장비를 다루는 능력을 증명하고, 해당 산업에서 일할 기회를 높일 수 있습니다.

최신 Nokia Optical Network Professional 4A0-205 무료샘플문제 (Q37-Q42):

질문 # 37
Which of the following is NOT a troubleshooting functionality of the Wavelength Tracker?

A. Detecting unexpected or missing channels.
B. Performing channel power monitoring.
C. Testing a node's internal fiber connectivity before service provisioning.
D. Tracing a service along an optical path.

정답：C

설명：
Comprehensive and Detailed Explanation From Nokia Optical Networking Fundamentals:
The Nokia Wavelength Tracker is a unique and powerful technology used within the 1830 PSS portfolio to provide "layer 0" visibility. It works by embedding unique optical signatures (keys) onto each wavelength at the source (transponder). These signatures allow the system to identify and monitor individual channels as they traverse the optical network without the need for expensive Optical Spectrum Analyzers (OSAs) at every site.
Specifically, the Wavelength Tracker enables tracing a service along its path by identifying these unique keys at various monitoring points. It also excels at channel power monitoring, as it can measure the power level of each specific wavelength independently. Furthermore, it is instrumental in detecting unexpected or missing channels (ghost signals or misrouting) by comparing the detected keys against the expected provisioning data in the management system. However, it is not used for testing a node's internal fiber connectivity before service provisioning. Internal fiber connectivity is typically verified during the commissioning phase using the Commissioning and Power Balancing (CPB) tool within WS-NOC or through manual physical inspection and "fiber-it" procedures. Wavelength Tracker requires an active, keyed optical signal to function, which generally exists only during or after the service provisioning stage.

질문 # 38
How does a Raman pump work in the 1830 specific implementation?

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

정답：B

설명：
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.

질문 # 39
Which mechanisms can be put in place to increase network survivability?

A. Protection, where backup resources are allocated upon failure; or restoration, where each trail can be recovered thanks to a 1+1 protection mechanism
B. Protection, where backup resources are pre-allocated and reserved; or restoration, where backup resources are allocated upon failure.
C. Protection, where backup resources are allocated upon failure; or restoration, where backup resources are pre-allocated and reserved
D. Protection, where backup resources are pre-allocated and reserved; or restoration, where each trail can be recovered thanks to a 1+1 protection mechanism

정답：B

설명：
There are two main mechanisms that can be put in place to increase network survivability: protection and restoration. Protection involves pre-allocating and reserving backup resources so that they are ready in case of a failure. Restoration involves allocating backup resources upon failure and using a 1+1 protection mechanism to recover each trail. This ensures that the network is able to re-route traffic in the event of a failure, increasing the overall survivability of the network.

질문 # 40
Which of the following are the main reasons for fiber attenuation?

A. Refraction and reflection
B. Small channel spacing
C. Scattering and absorption
D. Chromatic dispersion (CD) and polarization mode dispersion

정답：C

설명：
Scattering and absorption are the main reasons for fiber attenuation. Scattering occurs when light bounces off the sides of the fiber, while absorption happens when light is absorbed by the glass or other materials that make up the fiber. Chromatic dispersion (CD) and polarization mode dispersion (PMD) are also factors that can cause attenuation, but they are not the main causes. Small channel spacing can also cause attenuation, but it is a secondary factor and is only significant in certain cases.

질문 # 41
How many PM bins can be stored, for each data collection point, on PSS systems?

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

정답：D

설명：
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.

질문 # 42
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