2023年更新のNokia Optical Network Professionalが有効な4A0-205問題集を無料提供しています
最新のFast2test 4A0-205のPDF問題集をダウンロードしちゃおう：https://jp.fast2test.com/4A0-205-premium-file.html（42問題と解答)
質問 # 22
Is it possible to mix PSS-24x and PSS-8x shelves In an SWDM configuration?
- A. Yes, as both can be equipped within the same node
- B. No, as they are not compatible and cannot be used within the same node
- C. Yes, but the PSS-24X shelf must be configured as a master
- D. Yes, but the PSS-8X shelf must be configured as a master
正解：B
解説：
No, it is not possible to mix PSS-24x and PSS-8x shelves in an SWDM (Short Wavelength Division Multiplexing) configuration. The two shelves are not compatible, and cannot be used within the same node.
質問 # 23
What is the OAMP LAN interface?
- A. It is an RJ-45 interface (a common Ethernet port) used for cascading 1830 PSS nodes (e.g., external shelves)
- B. It is an RJ-45 interface (a common Ethernet port) used to export active alarms to an external device, typically equipped with several LEDs
- C. It is an RJ-45 interface (common Ethernet port) used to connect one or more client ports (e.g., 1Gb/s or legacy 100Mbit/s client flows)
- D. It is an RJ-45 interface (a common Ethernet port) that has to be configured with an IP address for node reachability and management
正解：D
解説：
It is an RJ-45 interface (a common Ethernet port) that has to be configured with an IP address for node reachability and management. This interface is used to connect the OAMP node to the LAN, allowing it to be managed and monitored remotely.
質問 # 24
A user needs to check for interface details against the commands is the correct one?
- A. 11starla 1/17 port-detail
- B. show interface 11starla 1/17/L1 detail
- C. config card 11star1a interface 1/17 detail
- D. config interface detail 1/17/L1
正解：B
解説：
show interface 11starla 1/17/L1 detail is the correct command to check for interface details. This command will display detailed information about the specified interface, including its status, configuration, and statistics.
質問 # 25
Which statement is correct about node synchronization?
- A. Node synchronization is executed to align the time of the node to the time of the NFM-T platform
- B. Node synchronization is executed to test the reachability of a node
- C. Full synchronization retrieves all items from the node (NE parameters. Ports, Alarms, Internal Links, etc)
- D. Full synchronization retrieves the correlated alarms from the node
正解：C
解説：
Node synchronization is a process of keeping the NFM-T database in sync with the nodes in the network. The synchronization process will download all the items from the node, including NE parameters, ports, alarms, internal links, etc., to the NFM-T database. This ensures that the NFM-T database is up to date and the network is running efficiently.
質問 # 26
What is the function of a pre-amplifier in an optical network?
- A. Through the pre-amplifier, the optical signal is amplified at the receiver side after it travels along the fiber from another node.
- B. Through the pre-amplifier, the optical signal is amplified within the node internally to recover internal losses due, for instance, to cascaded filters.
- C. Through the pre-amplifier, the optical signal is amplified both the receiver side and at the transmitter side.
- D. Through the pre-amplifier, the optical signal is amplified at the transmitter side before it is sent to the line span.
正解：D
解説：
A pre-amplifier is an optical amplifier that is used to boost the power of the received optical signal before it is detected by the receiver in an optical communication system. This is done to overcome the loss of power that occurs as the signal travels through the optical fiber and to ensure that the receiver can detect the signal. The pre-amplification stage is typically located close to the receiver in order to minimize the distance that the signal has to travel between the amplifier and the receiver, which helps to reduce the noise and distortion in the signal.
質問 # 27
Which sentence about NFM-T is correct?
- A. NFM-T is used to provision optical services having IP nodes as extremities
- B. NFM-T fully supports optical and IP nodes
- C. NFM-T fully supports LO, LI, L2 and GMPLS applications and it is mainly focused on 1830 PSS, as well as other older product families
- D. NFM-T is used to design and manage optical network
正解：A
解説：
NFM-T is a network management system designed to manage optical networks in a unified manner. It is used to design, manage, and provision optical services having IP nodes as extremities. It supports a variety of technologies, including optical and IP, and fully supports LO, LI, L2, and GMPLS applications. It is mainly focused on the Nokia 1830 PSS product family, as well as other older product families.
質問 # 28
How are the EPT systems related to NFM-T when CPB is performed?
- A. The systems are displayed on the CPB panel and they can be individually selected
- B. The systems are displayed on the CPB panel, however they cannot be individually selected as they need to run all together
- C. The systems are not reported on CPB, but only through the Equipment Manager
- D. 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
正解：A
解説：
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.
質問 # 29
Which statement is correct about the NFM-T network map?
- A. It allows the graphical visualization of the services deployed in the network with the details of the boards involved in the service.
- B. It automatically represents all nodes grouped by the location string assigned during the NE creation.
- C. It represents all supervised nodes grouped by alarm status (with a different color).
- D. It allows context sensitive navigation and represents nodes and related physical connections with different colors. depending on the active alarms.
正解：D
解説：
The NFM-T network map provides a graphical view of the network with different colors used to represent each node, physical connection, and active alarm. It allows the user to quickly identify any issues in the network and provides context sensitive navigation.
質問 # 30
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.
正解：C
解説：
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.
質問 # 31
Is it possible to open and manage EPT designs that are created with different releases than the release installed on the local workstation?
- A. Only designs created with current and older releases can be opened and edited.
- B. Only designs created with the current release can be opened and edited.
- C. Designs created with an older release can be opened by a current release but cannot make changes.
- D. No restrictions are imposed on the software release.
正解：A
解説：
It is possible to open and manage EPT designs that are created with different releases than the release installed on the local workstation, however only designs created with current and older releases can be opened and edited. Designs created with an older release can be opened by a current release but changes cannot be made.
質問 # 32
Which of the following statements is true about chromatic dispersion (CD)?
- A. Different wavelengths propagate at different speeds within the same media and therefore different colors travel in the fiber with different speed.
- B. Different channels have different bandwidth and this causes different CD performances.
- C. The fiber attenuation changes along the fiber, and when the light crosses these differences the CD takes place.
- D. The fiber attenuation introduces inter-channel interference.
正解：A
解説：
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.
質問 # 33
Where can the user set the long-haul WT decoder parameter, when designing a network with EPT?
- A. In the optimization parameters
- B. In the network parameters
- C. In the NE parameters
- D. In the audit menu
正解：C
解説：
The long-haul WT decoder parameter can be set in the NE parameters when designing a network with EPT. This parameter is used to adjust the sensitivity of the decoder and can help to improve the accuracy of the measurements for long-haul WTs.
The Network Element (NE) parameters in EPT (Element Planning Tool) are used to configure various settings and options for the network elements in the network. The long-haul WT decoder parameter is one such setting that can be configured in the NE parameters section. The user can access the NE parameters by navigating to the NE Parameters menu within the EPT interface. The user can then select the appropriate network element and modify the settings as needed. This information can be found in the Nokia guide for EPT.
質問 # 34
Which statement is correct about node synchronization?
- A. Node synchronization is executed to align the time of the node to the time of the NFM-T platform
- B. Node synchronization is executed to test the reachability of a node
- C. Full synchronization retrieves all items from the node (NE parameters. Ports, Alarms, Internal Links, etc)
- D. Full synchronization retrieves the correlated alarms from the node
正解：C
解説：
Node synchronization is a process of keeping the NFM-T database in sync with the nodes in the network. The synchronization process will download all the items from the node, including NE parameters, ports, alarms, internal links, etc., to the NFM-T database. This ensures that the NFM-T database is up to date and the network is running efficiently.
質問 # 35
What is a Shared Risk Group (SRG)?
- A. A set of boards that share the same failure risk
- B. A set of fibers that share the same latency risk
- C. A set of network resources that share a common failure risk
- D. A set of nodes that share a common risk of hardware failure
正解：C
解説：
According to the Nokia Optical Networking documentation, a Shared Risk Group (SRG) is defined as "a set of network resources that share a common failure risk. When a resource in an SRG fails, the other resources in the group are also affected." This can include fibers, boards, nodes, and other network resources. The SRG concept is used in network design and protection mechanisms to ensure survivability and minimal impact on service in case of a failure.
質問 # 36
In which window(s) does the attenuation reach its minimum peak?
- A. Both first and second windows
- B. Third window (1550 nm)
- C. First window (850 nm)
- D. Second window (1300 nm)
正解：B
解説：
The third window (1550 nm) is where the attenuation reaches its minimum peak. This is because the materials used in fiber optic cables have minimal absorption in this wavelength range. The first and second windows (850 nm and 1300 nm respectively) have higher attenuation due to the materials used in the fiber optic cables.
質問 # 37
How is it possible to check the activation status of GMRE on a node?
- A. The GMRE activation status is reported in the supervision state column on the node list
- B. The ControlPlane status column on the node list displays the GMRE status for the selected node
- C. The GMRE reachability can be tested via ping request from NFM-T
- D. The GMRE activation status is reflected on the color of the icon representing the node
正解：A
解説：
The GMRE activation status is reported in the supervision state column on the node list. The supervision state column displays the GMRE status of the node, which is either "Activated" or "Not Activated". This allows the user to quickly check the GMRE activation status of a node without having to ping the node from the NFM-T platform.
質問 # 38
Which of the following statements is true?
- A. Alarms and conditions report only historical status of the node.
- B. Alarms and conditions report a real time status of the node.
- C. Logs report a real time status of the node.
- D. Logs report both active and historical events.
正解：D
解説：
A log is a record of events that have occurred within a system, such as a network device or an application. Logs can include information about system activity, configuration changes, and error messages. They can be used for troubleshooting, auditing, and compliance purposes. Logs can report both active (real-time) and historical events that have occurred within a system.
Alarms and conditions, on the other hand, are used to notify operators of real-time status of the node, such as when a threshold is breached or when a specific event occurs. Alarms and conditions are typically used to provide real-time notifications of potential problems or issues, while logs are used to provide a historical record of what has occurred.
質問 # 39
......
Nokia 4A0-205試験は、オプティカルネットワーキング分野でスキルと知識を開発したい専門家を対象とした認定テストで、Nokia Optical Networking Fundamentals試験とも呼ばれます。この試験は、オプティカルネットワーキングに関連する様々なトピックをカバーしており、光伝送システム、ファイバーオプティックケーブル、ネットワークアーキテクチャ、ネットワーク管理などが含まれます。この認定テストは、通信産業で働く個人またはオプティカルネットワーキングのキャリアを追求することに興味がある人を対象としています。
実験された試験材料は4A0-205：https://jp.fast2test.com/4A0-205-premium-file.html
最新4A0-205リアル試験問題をフォローせよ！：https://drive.google.com/open?id=1VY8KGdI0XwdnsGvvVOgG6TNERJDJWo18