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Nokia Optical Diagnostics and Troubleshooting Sample Questions:

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

A) 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.
B) 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.
C) 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.
D) 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.

2. Which of the following commands is used to retrieve the total output power level?

A) show interface am2125a 1/6/lineout detail
B) show interface am212 5a 1/6/lineout pm
C) show interface am2125a 1/6/lineout
D) show interface am2125a 1/6/lineout wavekey

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

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

4. What is the default severity level for a Threshold Crossing Alert (TCA) alarm?

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

Solutions: