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Nokia Optical Diagnostics and Troubleshooting Sample Questions:

1. 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) Unstable optical power levels
C) An incorrect EPT network design
D) A defective WSS unit

2. What is the typical severity level of a "Loss of Signal" (LOS) alarm?

A) Warning
B) Critical
C) Major
D) Minor

3. Suppose a channel-related alarm is reported on an 1830 PSS node, and is related to a possible Wave Keys clock source issue. What is the recommended order for the following troubleshooting steps?

A) 1. Retrieve the channel power trace.
2. Replace the suspect PF.
3. Determine the active clock reference source.
4. Switch to alternate clock source (PF).
B) 1. Replace the suspect PF.
2. Retrieve the channel power trace.
3. Switch to alternate clock source (PF).
4. Determine the active clock reference source.
C) 1. Determine the active clock reference source.
2. Replace the suspect PF.
3. Retrieve the channel power trace.
4. Switch to alternate clock source (PF).
D) 1. Retrieve the channel power trace.
2. Determine the active clock reference source.
3. Switch to alternate clock source (PF).
4. Replace the suspect PF.

4. Consider the exhibit. Given the following power readings, what is the calculated span loss from Node A to Node B?

A) 11.5
B) 1.5
C) 8.0
D) 2.5

Solutions: