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Nokia Optical Diagnostics and Troubleshooting Sample Questions:

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

2. Consider the exhibit. A single directional fiber cut is occurring between two amplifiers in bidirectional configuration. Which node(s) will report a "LD Input LOS" alarm?

A) Node A and Node B
B) Node A only
C) Node C only
D) Node B only

3. Which of the following statements best describes the output of the command: show xc 1?

A) A list of boards that this cross-connection passes through on the local node, along with administrative/operational states, expected power levels, and measured power levels.
B) A list of cross-connections, including A-end, Z-end, frequency, ID number, OCH trail name, and administrative/operational states.
C) OCH trail name, ITU channel, administrative/operational states, protection states, and Wave Keys for both directions.
D) A list of all boards on all nodes that this cross-connection passes through, along with expected power levels, measured power levels, and allowed power deviations.

4. Suppose a node is experiencing a little unexpected attenuation over the Optical Supervisory Channel (OSC) transmit direction. Which of the following statements is FALSE?

A) A Power adjustments action will fail on the local node.
B) No OSC-related alarms will raise on the local node.
C) A "Data Link Down" alarm will raise on the adjacent node.
D) Traffic will pass between the local and adjacent node.

Solutions: