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Nokia Optical Diagnostics and Troubleshooting Sample Questions:

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

A) 8.0 dB
B) 2.0 dB
C) 10.0 dB
D) 5.0 dB

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

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

3. Suppose a Raman amplifier has been plugged into slot 1/8. Which command should the user enter to retrieve the total optical power detected at the ingress interface?

A) show interface 1/8 opin
B) show interface 1/8/UNEIN detail
C) show Interface 1/8/LINEIN
D) show interface 1/8 power

4. Suppose a "Channel Absent" alarm is reported on an 1830 PSS node. What is the recommended order for the following troubleshooting steps?

A) 1. Retrieve the cross-connection (XC) details and see what virave Keys should be present.
2. Go to the suspected troubled node / card / port and look at Wave Keys (in / out).
3. Retrieve the channel power trace.
4. Check observed Wave Keys against expected Wave Keys.
B) 1. Go to the suspected troubled node / card / port and look at Wave Keys (in / out).
2. Retrieve the cross-connection (XC) details and see what Wave Keys should be present.
3. Check observed Wave Keys against expected Wave Keys.
4. Retrieve the channel power trace.
C) 1. Check observed Wave Keys against expected Wave Keys.
2. Go to the suspected troubled node / card / port and look at Wave Keys (in / out).
3. Retrieve the channel power trace.
4. Retrieve the cross-connection (XC) details and see what Wave Keys should be present.
D) 1. Retrieve the channel power trace.
2. Retrieve the cross-connection (XC) details and see what Wave Keys should be present.
3. Go to the suspected troubled node / card / port and look at Wave Keys (in / out).
4. Check observed Wave Keys against expected Wave Keys.

Solutions: