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

2. 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. 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. 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.
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.

3. Consider the exhibit which shows part of an EPT Schematic View. Which number refers to the Wavelength Router (WR8-88) block?

A) 1
B) 2
C) 4
D) 5
E) 3

4. Which of the following statements correctly describes where power adjustments can be performed?

A) In bidirectional configurations, both ingress and egress power adjustments are performed against the ingress amplifiers only.
B) In bidirectional configurations, ingress power adjustments are performed against the ingress amplifiers, while egress power adjustments are performed against the egress amplifiers.
C) In unidirectional configurations, both ingress and egress power adjustments are performed against the ingress amplifiers only.
D) When Raman pumps are used, both ingress and egress power adjustments are performed against the Raman pump directly.

Solutions: