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

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

A) The alarm masking mechanism always forwards masked alarms to an external Network Management System (NMS) for alarm correlation.
B) 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.
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 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.

4. Consider the exhibit. What do the different colored green columns indicate?

A) Optical power levels measured for multiple wavelengths against a specific interface.
B) Optical power levels measured at different interfaces throughout the optical path of a single wavelength.
C) Optical power levels measured multiple times against a specific interface, at 24-hour intervals for the same wavelength.
D) The average optical power levels measured for multiple wavelengths throughout their shared optical path.

Solutions: