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Nokia 4A0-265 Exam Syllabus Topics:

Nokia Optical Diagnostics and Troubleshooting Sample Questions:

1. Consider the exhibit.

Which type of loopback is applied?

A) Line port terminal Ioopback
B) Line port facility Ioopback
C) Client port facility loopback
D) Client port terminal Ioopback

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

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

3. 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) 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. 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) 5.0 dB
C) 10.0 dB
D) 8.0 dB

Solutions: