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Nokia Optical Diagnostics and Troubleshooting Sample Questions:

1. Suppose a node is experiencing a little unexpected attenuation over the Optical Supervisory Channel (OSC) transmit direction. Which of the following statements is FALSE?

A) No OSC-related alarms will raise on the local node.
B) Traffic will pass between the local and adjacent node.
C) A "Data Link Down" alarm will raise on the adjacent node.
D) A Power adjustments action will fail on the local node.

2. Which of the following statements about the Wavelength Tracker (WT) capability is TRUE?

A) Wave Keys are originated by optical amplifiers.
B) WT uses a unique identifier based on a pair of numbers encoded by Optical Transponders OTs) into each service wavelength direction.
C) WT is compatible with other vendor domains, but the user must make sure that Wave Keys are unique on the crossed domains.
D) WT uses a unique identifier based on a pair of numbers encoded by Raman amplifiers into each service wavelength direction.

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

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

4. Which of the following statements about 1-Day PMs is TRUE?

A) 1-Day PMs show measurements collected over the preceding 24 hours. Up to 33 bins are available for data storing.
B) 1-Day PMs show measurements collected since the beginning of the current day. Up to 8 bins are available for data storing.
C) 1-Day PMs show measurements collected since the beginning of the current day. Up to 33 bins are available for data storing.
D) 1-Day PMs show measurements collected over the preceding 24 hours. Up to 8 bins are available for data storing.

Solutions: