4A0-205熱門認證 - 4A0-205熱門證照

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>> 4A0-205熱門認證 <<

最新的 Nokia Optical Network Professional 4A0-205 免費考試真題 (Q21-Q26):

問題 #21
In which window(s) does the attenuation reach its minimum peak?

A. Third window (1550 nm)
B. First window (850 nm)
C. Second window (1300 nm)
D. Both first and second windows

答案：A

解題說明：
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.

問題 #22
With reference to trails and services, which of the following sentences is correct?

A. Services are transported over trails; that is, services are clients with respect to trails.
B. A trail can interconnect three ports, while a service always two.
C. Trails are transported over services; that is, trails are clients with respect to services.
D. A service is always associated to a single wavelength, while a trail can involve multiple wavelengths.

答案：A

解題說明：
Services are transported over trails; that is, services are clients with respect to trails. A service is a logical connection that is used to transport data from one point to another. It is created over a trail, which is a physical connection that is established by using multiple wavelengths. As such, services are clients with respect to trails, as they are transported over them.

問題 #23
What is the function of a pre-amplifier in an optical network?

A. Through the pre-amplifier, the optical signal is amplified both the receiver side and at the transmitter side.
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 at the transmitter side before it is sent to the line span.
D. Through the pre-amplifier, the optical signal is amplified at the receiver side after it travels along the fiber from another node.

答案：C

解題說明：
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.

問題 #24
Which of the following statements is true?

A. Logs report both active and historical events.
B. Logs report a real time status of the node.
C. Alarms and conditions report a real time status of the node.
D. Alarms and conditions report only historical status of the node.

答案：A

解題說明：
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.

問題 #25
What does it take to get connected to the NSP platform?

A. A browser, the NSP IP address, and the credentials to access the web-based interface (WebUI).
B. A browser and the NSP IP address. Then, a browser plugin needs to be installed and the laptop rebooted before the NSP can be correctly reached.
C. A browser and the NSP IP address; and from the landing page, the NSP application should be downloaded and launched.
D. The NSP package should be downloaded from the Nokia website and properly licensed for the specific workstation to be used.

答案：A

解題說明：
To get connected to the Nokia Service Platform (NSP) platform, you need a browser and the NSP IP address. Then, you need the credentials to access the web-based interface (WebUI) for the NSP platform. Once you have these, you can access the NSP platform from a web browser.

問題 #26
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