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Nokia 4A0-265 Exam Syllabus Topics:

Nokia Optical Diagnostics and Troubleshooting Sample Questions:

1. Which of the following statements correctly describes where power adjustments can be performed?

A) In bidirectional configurations, both ingress and egress power adjustments are performed against the ingress amplifiers only.
B) In bidirectional configurations, ingress power adjustments are performed against the ingress amplifiers, while egress power adjustments are performed against the egress amplifiers.
C) In unidirectional configurations, both ingress and egress power adjustments are performed against the ingress amplifiers only.
D) When Raman pumps are used, both ingress and egress power adjustments are performed against the Raman pump directly.

2. Refer to the exhibit, which shows a conditions list from the 1830 PSS GUI. (i) What is the total number of alarms reported? (ii) How many service affecting alarms are displayed? (iii) How many conditions are displayed?

A) (i) total number of alarms = 2
(ii) number of service affecting alarms = 2
(Hi) number of conditions = 18
B) (i) total number of alarms = 7
(ii) number of service affecting alarms = 5
(Hi) number of conditions = 7
C) (I) total number of alarms = 5
(ii) number of serviceaffectingalarms = 2
(Hi) number of conditions = 14
D) (i) total number of alarms = 4
(ii) number of service affecting alarms = 14
(iii) number of conditions = 2

3. Consider the exhibit. A single directional fiber cut is occurring between two amplifiers in unidirectional configuration with Raman pump.
Multiple services are crossing the affected span.
Which node(s) will report an Incoming Payload LOS" alarm?

A) Neither Node A nor Node C.
B) No node, as a Raman pump is used in Node A.
C) Both Node A and Node C
D) Node C only.

4. Which of the following statements best describes the Forward Error Correction (FEC) technique?

A) FEC enables errors to be detected and corrected without retransmission. This technique is effective only below a specified OSNR threshold.
B) FEC enables errors to be detected and data to be retransmitted. This technique is effective only below a specified OSNR threshold.
C) FEC enables errors to be detected and corrected without retransmission. This technique is effective only above a specified OSNR threshold.
D) FEC enables errors to be detected and data to be retransmitted. This technique is effective only above a specified OSNR threshold.

Solutions: