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| Vendor: | Nokia |
|---|---|
| Exam Code: | 4A0-255 |
| Exam Name: | Nokia Advanced Optical Network Design |
| Exam Questions: | 40 |
| Last Updated: | November 21, 2025 |
| Related Certifications: | Nokia Optical Network Design Expert |
| Exam Tags: |
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Which of the following statements about the recovery time for protection and restoration combined (PRC) is correct?
Consider the exhibit that shows the OTN frame structure . Which of the following sets of label is correct?

Consider the exhibit. Which of the following NE architectures is represented?

Refer to the exhibit.

Consider the above exhibit, which shows a WDM network map from EPT. A new trail at 10G needs to be created from Site1 to Site3. The design tool routes the trail through Site1 but the trail is evaluated as invalid due to insufficient OSNR margin. Among the following option, which is NOT effective for making the 10G trail valid?
Which of the following is recommended to reduce the latency of a 30km long link?
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