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Nokia 4A0-265 Exam Syllabus Topics:

Nokia Optical Diagnostics and Troubleshooting Sample Questions:

1. Which of the following statements about the alarm masking mechanism is TRUE?

A) The alarm masking mechanism updates the events' original time stamps when it masks/shows alarms, so that when an alarm is not masked anymore, the user can see the updated date and time associated with the original issue.
B) The alarm masking mechanism always forwards masked alarms to an external Network Management System (NMS) for alarm correlation.
C) The alarm masking mechanism makes sure that alarms are always present on the downstream interfaces to facilitate the troubleshooting process.
D) The alarm masking mechanism preserves the events' original time stamps, when related alarms gets hidden and then eventually displayed because of the mechanism itself, so that the user can still know the date and time of the original issue.

2. Which of the following is NOT a characteristic of an Optical Supervisory Channel Loss of Signal (OSC LOS) issue, in case that no "LD Input LOS" alarms are raised against the involved amplifiers?

A) A "Power Adjustment Required" alarm is eventually raised on the local node.
B) A "Data Link Down" alarm is raised on the adjacent node.
C) An "Incoming SUPVY LOS" alarm is raised on the local node.
D) Traffic does not pass between the local and adjacent nodes.

3. Which of the following statements best describes the output of the command: show xc 1?

A) OCH trail name, ITU channel, administrative/operational states, protection states, and Wave Keys for both directions.
B) A list of boards that this cross-connection passes through on the local node, along with administrative/operational states, expected power levels, and measured power levels.
C) A list of cross-connections, including A-end, Z-end, frequency, ID number, OCH trail name, and administrative/operational states.
D) A list of all boards on all nodes that this cross-connection passes through, along with expected power levels, measured power levels, and allowed power deviations.

4. Which of the following statements about 1-Day PMs is TRUE?

A) 1-Day PMs show measurements collected over the preceding 24 hours. Up to 8 bins are available for data storing.
B) 1-Day PMs show measurements collected since the beginning of the current day. Up to 33 bins are available for data storing.
C) 1-Day PMs show measurements collected since the beginning of the current day. Up to 8 bins are available for data storing.
D) 1-Day PMs show measurements collected over the preceding 24 hours. Up to 33 bins are available for data storing.

Solutions: