Nokia 4A0-265 : Nokia Optical Diagnostics and Troubleshooting

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Nokia 4A0-265 Exam Syllabus Topics:

Nokia Optical Diagnostics and Troubleshooting Sample Questions:

1. Which of the following statements correctly describes where power adjustments can be performed?

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

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

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

3. Which of the following correctly describes how a unidirectional amplification stage works?

A) * Incoming optical signals are boosted by the ingress amplifier.
* Outgoing optical signals do not pass through the ingress amplifier.
B) * Incoming optical signals pass through the ingress amplifier but are not boosted.
* Outgoing optical signals are boosted by the ingress amplifier.
C) * Incoming optical signals are boosted by the ingress amplifier.
* Outgoing optical signals pass through the ingress amplifier but are not boosted.
D) * Incoming optical signals are boosted by the ingress amplifier.
* Outgoing optical signals are also boosted by the ingress amplifier.

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

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

Solutions: