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

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

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

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

A) 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.
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. 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.

4. A power adjustment has succeeded conditionally because of gain settings set to higher levels than expected by design. Which of the following alarms will raise?

A) Amplifier Gain Tilt Adjustments Suspended (PWRTILTSUSP)
B) Invalid topology (PRCDRERR-TOPO)
C) Power Adjustment Failure (PWRADJFAIL)
D) Gain Adjustment Exceeded Max Value (PWRMAXGAIN)

Solutions: