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| Section | Objectives |
|---|---|
| Topic 1: WDM and Optical Transport Technologies | - Optical Transport Network (OTN)
|
| Topic 2: Fundamentals of Optical Networking | - Optical fiber principles and transmission characteristics
|
| Topic 3: Optical Network Architectures and Systems | - Metro and long-haul optical networks
|
>> 4A0-205 Original Questions <<
The Nokia 4A0-205 certification exam is a valuable credential that often comes with certain personal and professional benefits. For many Nokia professionals, the Nokia Optical Networking Fundamentals (4A0-205) certification exam is not just a valuable way to boost their skills but also Nokia Optical Networking Fundamentals certification exam gives them an edge in the job market or the corporate ladder. There are other several advantages that successful Nokia 4A0-205 Exam candidates can gain after passing the Nokia 4A0-205 exam.
NEW QUESTION # 36
Is it possible to mix PSS-24x and PSS-8x shelves In an SWDM configuration?
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 # 37
Which use case is most suitable for the deployment of a star topology?
Answer: C
Explanation:
A star topology is a network design where all devices are connected to a central hub, which acts as a central point of control and management for the network. This type of topology is commonly used in access networks, where a central node is used to aggregate traffic from multiple users or devices, and then forward it to the core network. This design allows for efficient use of resources and easy management of the network.
Reference:
"Computer Networking: A Top-Down Approach" by James Kurose and Keith Ross (Chapter 3)
"Data Communications and Networking" by Behrouz A. Forouzan (Chapter 2)
NEW QUESTION # 38
Which of the following statements about the contentionless feature on a CDC-F node is TRUE?
Answer: A
Explanation:
Comprehensive and Detailed Explanation From Nokia Optical Networking Fundamentals:
The term CDC-F stands for Colorless, Directionless, Contentionless, and Flex-grid. While "Colorless" allows any wavelength on any port and "Directionless" allows any port to be routed to any output fiber (degree), Contentionless solves a specific physical limitation of traditional multiplexers. In a standard ROADM, you cannot drop the same wavelength (e.g., Channel 21) from two different directions (e.g., North and West) into the same add/drop structure because they would "contend" or collide on the same internal fiber.
A Contentionless architecture (typically utilizing a Multicast Switch or MCS) allows the node to drop the same wavelength from different degrees simultaneously without interference. This is critical for high-availability mesh networks where a single transponder might need to receive a specific wavelength from a primary path and a backup path. Without contentionless capabilities, operators would have to carefully manage wavelength assignments across the entire network to ensure no two identical frequencies ever meet at the same drop structure, which significantly complicates planning and restoration.
NEW QUESTION # 39
How many PM bins can be stored, for each data collection point, on PSS systems?
Answer: C
Explanation:
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.
NEW QUESTION # 40
Which of the following are the main reasons for fiber attenuation?
Answer: D
NEW QUESTION # 41
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