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質問 1：
For a 10G OTU board, the receiving end optical module uses PIN module. Which of the following receiving powers is in the normal receiving range of the board?
A. -9dBm
B. -19dBm
C. 19dBm
D. 9dBm
正解：A
質問 2：
Which of the following description of the performance parameters of line fiber quality monitoring is wrong?
A. The total loss of the fiber will affect the actual detection distance. The dynamic range of the same detection mode is fixed. The larger the total loss of the fiber, the smaller the distance that can be detected.
B. Line fiber quality monitoring function increases the monitoring accuracy by adding the averaged results to the average. The actual time required from the start detection to the software returning the test result will be greater than the "detection time" is set.
C. Increasing the pulse width increases the duration of the laser emission, which increases the energy injected, allowing for a larger dynamic range, but an increase in pulse width results in a larger dead zone.
D. Different modes of light pulse width are different in detection, pulse width affects distance accuracy and monitoring distance. The larger the pulse width, the larger the dynamic range, the longer the test distance and the higher the range measurement accuracy.
正解：D
質問 3：
The working mode provided by the line fiber quality monitoring function does not include _____.
A. Automatic mode
B. Near-end mode
C. Intra-office mode
D. Manual mode
正解：A
質問 4：
When performing fiber synchronization, the network element does not create a fiber. What does it indicate?
A. The fiber connection exists on both the network management side and the network element side.
B. Fiber connection exists only on the local network management side.
C. Fiber connection that does not exist on the network management side and the NE side.
D. Fiber connection only on the NE side.
正解：B
質問 5：
The length range of the DATA field in the Ethernet frame structure is ().
A. 46-1518 bytes
B. 64-1518 bytes
C. 46-1500 bytes
D. 64-1500 bytes
正解：C
質問 6：
Since the EALC/ALC function is used in the SOM system, there is a possibility of business interruption during optical power adjustment.
A. TRUE
B. FALSE
正解：A
質問 7：
Using the path method to create a Client path fails. What are the possible reasons? (Multiple choice)
A. FEC mode does not match at both ends of the transceiver
B. There is no complete OCh path
C. Physical connection lacking between boards
D. The channel has been used up
正解：B,C,D
For a 10G OTU board, the receiving end optical module uses PIN module. Which of the following receiving powers is in the normal receiving range of the board?
A. -9dBm
B. -19dBm
C. 19dBm
D. 9dBm
正解：A
質問 2：
Which of the following description of the performance parameters of line fiber quality monitoring is wrong?
A. The total loss of the fiber will affect the actual detection distance. The dynamic range of the same detection mode is fixed. The larger the total loss of the fiber, the smaller the distance that can be detected.
B. Line fiber quality monitoring function increases the monitoring accuracy by adding the averaged results to the average. The actual time required from the start detection to the software returning the test result will be greater than the "detection time" is set.
C. Increasing the pulse width increases the duration of the laser emission, which increases the energy injected, allowing for a larger dynamic range, but an increase in pulse width results in a larger dead zone.
D. Different modes of light pulse width are different in detection, pulse width affects distance accuracy and monitoring distance. The larger the pulse width, the larger the dynamic range, the longer the test distance and the higher the range measurement accuracy.
正解：D
質問 3：
The working mode provided by the line fiber quality monitoring function does not include _____.
A. Automatic mode
B. Near-end mode
C. Intra-office mode
D. Manual mode
正解：A
質問 4：
When performing fiber synchronization, the network element does not create a fiber. What does it indicate?
A. The fiber connection exists on both the network management side and the network element side.
B. Fiber connection exists only on the local network management side.
C. Fiber connection that does not exist on the network management side and the NE side.
D. Fiber connection only on the NE side.
正解：B
質問 5：
The length range of the DATA field in the Ethernet frame structure is ().
A. 46-1518 bytes
B. 64-1518 bytes
C. 46-1500 bytes
D. 64-1500 bytes
正解：C
質問 6：
Since the EALC/ALC function is used in the SOM system, there is a possibility of business interruption during optical power adjustment.
A. TRUE
B. FALSE
正解：A
質問 7：
Using the path method to create a Client path fails. What are the possible reasons? (Multiple choice)
A. FEC mode does not match at both ends of the transceiver
B. There is no complete OCh path
C. Physical connection lacking between boards
D. The channel has been used up
正解：B,C,D
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