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Nokia Optical Diagnostics and Troubleshooting Sample Questions:

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

A) Ingress amplifiers are always more powerful [than egress amplifiers, to reduce the impact of non-linear effects.
B) 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.
C) The Optical Supervisory Channel (OSC) is amplified when passing through all amplifier types, except for Raman which is not based on EDFA.
D) When channels pass through amplifiers, all of them always experience a similar amplification.

2. Which of the following issues can cause a "Loss too low" message to be displayed after a power adjustment has been provided?

A) An incorrect EPT network design
B) Unstable optical power levels
C) A defective WSS unit
D) A dirty fiber connector

3. Consider the exhibit. Given the following power readings, what is the calculated span loss from Node A to Node B?

A) 2.0 dB
B) 8.0 dB
C) 10.0 dB
D) 5.0 dB

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

Solutions: