Free PDF Quiz Nokia - High Pass-Rate 4A0-205 - Nokia Optical Networking Fundamentals Valid Exam Test

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Nokia 4A0-205 certification exam, also known as the Nokia Optical Networking Fundamentals exam, is designed for professionals seeking to enhance their knowledge and skills in optical networking. Nokia is a renowned provider of telecommunications equipment, and this certification exam is a testament to the company's commitment to excellence in optical networking.

Nokia 4A0-205 Exam, also known as the Nokia Optical Networking Fundamentals exam, is a certification exam that tests the knowledge and skills of professionals working in the field of optical networking. 4A0-205 exam is designed for individuals who have a strong understanding of optical networking concepts and technologies and are looking to validate their expertise in this area.

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Nokia Optical Networking Fundamentals Sample Questions (Q17-Q22):

NEW QUESTION # 17
Which of the following statements about Optical Add/Drop Multiplexers (OADMs) is FALSE?

A. OADMs always require O-E-O conversion when passing-through optical channels.
B. OADMs allow the user to pass-through specific services at the wavelength optical level (express channels).
C. OADMs allow the user to terminate specific services through transponders.
D. There are two main general classes of OADMs: FOADMs and ROADMs.

Answer: A

Explanation:
Comprehensive and Detailed Explanation From Nokia Optical Networking Fundamentals:
In the context of the Nokia 1830 PSS (Photonic Service Switch) and general WDM principles, the statement that OADMs always require O-E-O (Optical-Electrical-Optical) conversion for pass-through channels is fundamentally incorrect. The primary purpose of an OADM is to provide the ability to "add" or "drop" specific wavelengths while allowing other wavelengths (known as express or pass-through channels) to continue through the node entirely in the photonic domain.
By remaining in the optical layer, these express channels avoid the latency and cost associated with O-E-O conversion. FOADMs (Fixed OADMs) use static filters to achieve this, while ROADMs (Reconfigurable OADMs) use Wavelength Selective Switches (WSS) to dynamically route traffic. O-E-O conversion only occurs at the transponder or muxponder level when a service is terminated (dropped) or initiated (added) to convert the client signal into a compliant DWDM wavelength. Therefore, the efficiency of an optical network relies on the fact that pass-through traffic stays as light, bypassing the need for electrical processing at every node.

NEW QUESTION # 18
With reference to the image, where is the OPS card placed to provide the OMSP protection?

A. Between the transponders and the mux/demux
B. After the amplifiers
C. Before the transponder, on the client side, towards the external device
D. Between the mux/demux and the amplifier

Answer: C

NEW QUESTION # 19
A user needs to retrieve the active alarm list from a network element. Which command should be issued through an 1830 PSS CLI?

A. alm
B. show active alarms
C. display alarms
D. retrieve alarms

Answer: A

Explanation:
Comprehensive and Detailed Explanation From Nokia Optical Networking Fundamentals:
The Nokia 1830 PSS uses a Command Line Interface (CLI) that is distinct from the Nokia SR-OS used in routers. For technicians performing local maintenance or troubleshooting via a serial or SSH connection to the Shelf Controller (EC), the command to view the current status of the network element's alarms is show fault-database or the shorthand alm.
When the alm command is executed, the system displays a table containing all active alarms, their severity (Critical, Major, Minor, or Warning), the timestamp of the occurrence, and the specific object (e.g., a specific port or card) that is reporting the fault. This is the primary method for "Layer 0" local troubleshooting. While management software like WS-NOC provides a Graphical User Interface (GUI) to view these alarms, knowing the CLI command is essential for field operations where a connection to the central management system might not be available. Option B, C, and D are incorrect as they do not follow the specific syntax of the 1830 PSS CLI environment.

NEW QUESTION # 20
Is it possible to mix PSS-24x and PSS-8x shelves In an SWDM configuration?

A. Yes, but the PSS-8X shelf must be configured as a master
B. Yes, as both can be equipped within the same node
C. Yes, but the PSS-24X shelf must be configured as a master
D. No, as they are not compatible and cannot be used within the same node

Answer: D

Explanation:
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.

NEW QUESTION # 21
How does a Raman pump work in the 1830 specific implementation?

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

Answer: D

Explanation:
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.

NEW QUESTION # 22
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