Nokia Optical Diagnostics and Troubleshooting (4A0-265) Free Practice Test

Question 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 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.

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. 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.

Correct Answer: D

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Question 2

On a bidirectional optical amplifier configuration, which of the following are Wavelength Tracker detection points?

A. LINEOUT and SIGOUT interfaces.

B. An optical amplifier has no Wavelength Tracker detection points.

C. SIG interface only.

D. LINE and SIG interfaces.

Correct Answer: D

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Question 3

Which of the following CLI commands displays a list of the expected and measured output power for the channels whose admin state is up?

A. show wavekey wtsource

B. show wavekey wtsource power

C. config wavekey power detail

D. config wavekey summary

Correct Answer: B

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Question 4

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

A. When Raman pumps are used, both ingress and egress power adjustments are performed against the Raman pump directly.

B. In unidirectional configurations, both ingress and egress power adjustments are performed against the ingress amplifiers only.

C. In bidirectional configurations, ingress power adjustments are performed against the ingress amplifiers, while egress power adjustments are performed against the egress amplifiers.

D. In bidirectional configurations, both ingress and egress power adjustments are performed against the ingress amplifiers only.

Correct Answer: C

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Nokia Optical Diagnostics and Troubleshooting (4A0-265) Free Practice Test