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Nokia 4A0-265 Exam Syllabus Topics:

Nokia Optical Diagnostics and Troubleshooting Sample Questions:

1. 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 = 5
(ii) number of serviceaffectingalarms = 2
(Hi) number of conditions = 14
B) (i) total number of alarms = 2
(ii) number of service affecting alarms = 2
(Hi) number of conditions = 18
C) (i) total number of alarms = 4
(ii) number of service affecting alarms = 14
(iii) number of conditions = 2
D) (i) total number of alarms = 7
(ii) number of service affecting alarms = 5
(Hi) number of conditions = 7

2. Consider the exhibit. A single directional fiber cut is occurring between two amplifiers in bidirectional configuration. Which node(s) will report a "LD Input LOS" alarm?

A) Node A only
B) Node C only
C) Node B only
D) Node A and Node B

3. Suppose a channel-related alarm is reported on an 1830 PSS node, and is related to a possible Wave Keys clock source issue. What is the recommended order for the following troubleshooting steps?

A) 1. Retrieve the channel power trace.
2. Determine the active clock reference source.
3. Switch to alternate clock source (PF).
4. Replace the suspect PF.
B) 1. Replace the suspect PF.
2. Retrieve the channel power trace.
3. Switch to alternate clock source (PF).
4. Determine the active clock reference source.
C) 1. Determine the active clock reference source.
2. Replace the suspect PF.
3. Retrieve the channel power trace.
4. Switch to alternate clock source (PF).
D) 1. Retrieve the channel power trace.
2. Replace the suspect PF.
3. Determine the active clock reference source.
4. Switch to alternate clock source (PF).

4. What is the typical severity level of a "Loss of Signal" (LOS) alarm?

A) Critical
B) Major
C) Minor
D) Warning

Solutions: