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

2. Suppose a unidirectional amplifier has been plugged into slot 1/13. Which command should the user enter to retrieve the OSC pluggable module type?

A) show interface 1/13/OSC detail
B) show interface 1/13/OSCSFP detail
C) show interface 1/13/OSCSFP
D) show interface 1/13/OSC

3. Which of the following statements about optical power vs amplification stages is TRUE?

A) When multiple channels pass through a shared port (for example, an amplifier line interface), the total aggregated power reflects the number of channels currently present.
B) Ingress amplifiers are always more powerful [than egress amplifiers, to reduce the impact of non-linear effects.
C) When channels pass through amplifiers, all of them always experience a similar amplification.
D) The Optical Supervisory Channel (OSC) is amplified when passing through all amplifier types, except for Raman which is not based on EDFA.

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

Solutions: