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| Certification Vendor: | Nokia |
|---|---|
| Exam Name: | Nokia Optical Networking Fundamentals |
| Exam Number: | 4A0-205 |
| Related Certifications: | Nokia Certified Optical Network Automation Professional Nokia Optical Network Professional Certification Nokia Optical Network Services Expert Certification |
| Exam Price: | $125 USD |
| Exam Duration: | 90 minutes |
| Exam Format: | Multiple Choice |
| Real Exam Qty: | 40 |
| Available Languages: | English |
| Sample Questions: | Nokia 4A0-205 Sample Questions |
| Exam Way: | Pearson VUE testing center or online proctored exam. |
| Pre Condition: | No mandatory prerequisites. |
| Official Syllabus URL: | https://www.nokia.com/networks/training/onc/exams/optical-networking-fundamentals/ |
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Nokia 4A0-205 Exam focuses on various topics related to optical networking, including optical transmission systems, wavelength division multiplexing (WDM), and fiber optic technology. 4A0-205 exam is designed to test the candidate's understanding of optical networking principles and their ability to apply this knowledge in real-world scenarios. Passing 4A0-205 Exam validates the candidate's expertise in optical networking, which can help them advance their career in the telecommunications industry.
NEW QUESTION # 47
Which type of ports are present in the Colorless Wavelength Router (CWR)?
Answer: C
Explanation:
Comprehensive and Detailed Explanation From Nokia Optical Networking Fundamentals:
In the Nokia 1830 PSS (Photonic Service Switch) architecture, the Colorless Wavelength Router (CWR) is a specialized module used within ROADM nodes to enable "colorless" add/drop capabilities. Traditional static multiplexers, like the SFD (Static Filter Device), use fixed-wavelength ports where a specific port is hard-wired to a specific frequency (color). In contrast, a CWR allows any wavelength to be added or dropped from any of its ports.
The ports on a CWR are bi-directional. This means that a single physical port on the CWR card handles both the transmit (Tx) and receive (Rx) paths for a specific wavelength, typically connecting to a transponder's line-side interface. This bi-directional design simplifies fiber management within the shelf and is a key requirement for the "Colorless" attribute of modern flexible grids. By utilizing CWR modules, operators can remotely retune a transponder to a different frequency without needing a technician to physically move fiber patches to a different port on a multiplexer, significantly increasing operational efficiency and reducing human error during service provisioning or restoration.
NEW QUESTION # 48
What is the OAMP LAN interface?
Answer: C
Explanation:
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.
NEW QUESTION # 49
What is the purpose of the validate step in the EPT design process?
Answer: C
Explanation:
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.
NEW QUESTION # 50
Which of the following is an example of optical protection mechanism?
Answer: B
Explanation:
It can be implemented through the use of a Y-cable or an optical protection switch (OPS) card, which allows for the switching of traffic to a secondary path in the event of a failure on the primary path. This type of protection is commonly used to protect against fiber cuts and other types of physical layer failures in the optical transport network.
NEW QUESTION # 51
In which of the following forms does the TTI byte provide information on network elements?
Answer: C
Explanation:
Comprehensive and Detailed Explanation From Nokia Optical Networking Fundamentals:
In the Optical Transport Network (OTN) hierarchy, the TTI (Trail Trace Identifier) is a 64-byte overhead signal used to ensure that the source and destination of a path are correctly connected. It is part of the overhead in the OTU (Optical Transport Unit) and ODU (Optical Data Unit) layers. The TTI provides a mechanism for "path trace" to prevent misconnections. It specifically carries the SAPI (Source Access Point Identifier) and the DAPI (Destination Access Point Identifier).
These identifiers are strings that uniquely identify the source and destination ports. By comparing the "Expected SAPI/DAPI" configured on a port with the "Received SAPI/DAPI" actually coming in over the fiber, the Nokia 1830 PSS can detect fiber patching errors or cross-connect mistakes. If there is a mismatch, the system can trigger a TIM (Trace Identifier Mismatch) alarm and potentially squelch the traffic to prevent data from being delivered to the wrong customer. This is a Layer 1 (OTN) function and is entirely independent of Layer 2 MAC addresses or Layer 3 IP addresses used by the management system for DCN (Data Communication Network) connectivity.
NEW QUESTION # 52
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