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

2. Which of the following statements best describes the Forward Error Correction (FEC) technique?

A) FEC enables errors to be detected and data to be retransmitted. This technique is effective only above a specified OSNR threshold.
B) FEC enables errors to be detected and data to be retransmitted. This technique is effective only below a specified OSNR threshold.
C) FEC enables errors to be detected and corrected without retransmission. This technique is effective only below a specified OSNR threshold.
D) FEC enables errors to be detected and corrected without retransmission. This technique is effective only above a specified OSNR threshold.

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

A) When channels pass through amplifiers, all of them always experience a similar amplification.
B) Ingress amplifiers are always more powerful [than egress amplifiers, to reduce the impact of non-linear effects.
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 multiple channels pass through a shared port (for example, an amplifier line interface), the total aggregated power reflects the number of channels currently present.

4. Consider the exhibit which shows part of an EPT Schematic View. Which number refers to the Wavelength Router (WR8-88) block?

A) 5
B) 4
C) 2
D) 3
E) 1

Solutions: