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Nokia Optical Networking Fundamentals Sample Questions (Q10-Q15):

NEW QUESTION # 10
What is the purpose of the NFM-T node synchronization?

A. The partial or full node synchronization allows several entities/items defined at NFM-T level to be written into the node database (download).
B. The partial or full node synchronization allows several entities/items defined at NFM-T level to be exported into an XML file, to be used as input for EPT (download to design).
C. The partial or full node synchronization allows several entities/items defined at EPT level to be retrieved into the NFM-T database (upload from design).
D. The partial or full node synchronization allows several entities/items defined at node level to be retrieved into the NFM-T database (upload).

Answer: A

Explanation:
This is done in order to keep the NFM-T database in sync with the nodes in the network. The synchronization process allows the NFM-T to keep track of any changes that are made to the nodes, such as new nodes added, nodes removed, and so on. By synchronizing the node database with the NFM-T, network administrators can ensure that their network is up to date and running efficiently.

NEW QUESTION # 11
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. Before the transponder, on the client side, towards the external device
C. Between the mux/demux and the amplifier
D. After the amplifiers

Answer: B

NEW QUESTION # 12
How many PM bins can be stored, for each data collection point, on PSS systems?

A. 33 x 15-min bins, 8 x 1-day bins and 1 raw bin.
B. 200 x 15-min bins, 90 x 1-day bins and 1 raw bin.
C. 4 x 15-min bins and 1 x 1-day bin.
D. 120 x 15-min bins, 60 x 1-day bins and 1 raw bin.

Answer: A

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 # 13
In which of the following forms does the TTI byte provide information on network elements?

A. Source and destination MAC addresses
B. Source and destination IP addresses and overhead
C. Source and destination time-slot identifiers
D. Source (SAPI) and Destination (DAPI) Access Point Identifiers

Answer: D

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 # 14
What is a trail?

A. A transparent transport of a client signal
B. An entity to encapsulate a low order signal into a high order container
C. A physical link between two optical amplifiers
D. A link between end points to increase the power budget of the optical link

Answer: A

Explanation:
A trail is a transparent transport of a client signal. A trail is a physical link between two points in an optical network, allowing for the transport of a client signal from one point to the other. It is a low-order signal, such as a 10G Ethernet or a Fibre Channel signal, encapsulated into a high-order container, such as a 40G or 100G signal. This allows for the transport of the client signal over longer distances, increasing the power budget of the optical link.

NEW QUESTION # 15
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