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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Optical Networking Basics | 20% | - Optical components and functions - Optical signal propagation and characteristics - Fiber types, properties and transmission principles |
| Topic 2: Network Survivability and Protection | 15% | - Path and line protection schemes - Availability and survivability concepts - Protection and restoration mechanisms |
| Topic 3: WDM Technology and Systems | 25% | - Optical amplifiers and transmission engineering - Wavelength Division Multiplexing concepts - DWDM system architecture and building blocks |
| Topic 4: Optical Network Architecture and Nodes | 20% | - Network topologies and transport architectures - Switched WDM (SWDM) principles - WDM node types and functionalities |
| Topic 5: Network Management and Operations | 20% | - NFM-T / WS-NOC management system overview - Network commissioning and monitoring - Performance monitoring, alarms and troubleshooting - Network design with 1830 EPT / WaveSuite Planner |
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NEW QUESTION # 19
Where is the OPS card equipped to provide the optical channel protection?
Answer: C
Explanation:
According to the Nokia's 1830 Photonic Service Switch (PSS) product documentation, the Optical Protection Switching (OPS) card is equipped in the transponder and is responsible for providing optical channel protection between the transponder and the amplifiers. The OPS card monitors the optical signal and switches to a pre-configured protection path in case of signal degradation or loss.
NEW QUESTION # 20
Which statement is correct about the NFM-T network map?
Answer: B
Explanation:
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.
NEW QUESTION # 21
WDM allows transmission systems to:
Answer: B
NEW QUESTION # 22
In which of the following forms does the TTI byte provide information on network elements?
Answer: A
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 # 23
When monitoring the quality of the received signal in WDM, an open eye indicates:
Answer: B
Explanation:
An open eye pattern indicates that the signal is not affected by noise, and the received signal is of high quality. This is because an open eye pattern is the result of a signal that is aligned in time, and is not affected by noise or other distortions.
Reference:
"Optical Fiber Communications" by Gerd Keiser
"Fiber-Optic Communications Technology" by Djafar K. Mynbaev
"Optical Communications" by Gerd Keiser
NEW QUESTION # 24
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