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Nokia 4A0-205 Exam Syllabus Topics:

SectionWeightObjectives
WDM Technology and Systems25%- Wavelength Division Multiplexing concepts
- Optical amplifiers and transmission engineering
- DWDM system architecture and building blocks
Network Survivability and Protection15%- Path and line protection schemes
- Protection and restoration mechanisms
- Availability and survivability concepts
Optical Networking Basics20%- Optical signal propagation and characteristics
- Optical components and functions
- Fiber types, properties and transmission principles
Network Management and Operations20%- Network commissioning and monitoring
- NFM-T / WS-NOC management system overview
- Network design with 1830 EPT / WaveSuite Planner
- Performance monitoring, alarms and troubleshooting
Optical Network Architecture and Nodes20%- WDM node types and functionalities
- Network topologies and transport architectures
- Switched WDM (SWDM) principles

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최신 Nokia Optical Network Professional 4A0-205 무료샘플문제 (Q15-Q20):

질문 # 15
What is the meaning of first, second, and third window in the optical fiber propagation context?

정답：A

설명：
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


질문 # 16
Which application generates the commissioning file(s)?

정답：A

설명：
The CPB (Commissioning Parameter Builder) application is used to generate the commissioning files for a Nokia 1830 Photonic Service Switch (PSS-1). The CPB application allows the user to create multiple commissioning files [1][2], which can be used to configure a variety of different features on the device. The CPB also allows users to view, edit and modify the commissioning files before they are uploaded to the device. The NSP (Network Service Platform) and EPT (Element Provisioning Tool) are used to manage the devices and network elements within the network, but do not generate commissioning files.


질문 # 17
What is the metro area network?

정답：B

설명：
The Metro Area Network (MAN) is a telecommunications network that spans a metropolitan area and connects multiple local area networks (LANs) or business networks together. It typically covers an area that is larger than a LAN but smaller than a wide area network (WAN). The purpose of a MAN is to provide a high-bandwidth, low-latency communication infrastructure for businesses and other organizations in a metropolitan area.
Reference:
Cisco, "Metro Ethernet Services," https://www.cisco.com/c/en/us/solutions/service-provider/metro-ethernet-services/index.html Techopedia, "Metro Area Network (MAN)," https://www.techopedia.com/definition/26896/metro-area-network-man


질문 # 18
What is the purpose of the NFM-T node synchronization?

정답：B

설명：
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.


질문 # 19
Which mechanisms can be put in place to increase network survivability?

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 # 20
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