Troubleshooting DWDM Technology | Cisco Exam 400-201

Parameters for Troubleshooting DWDM Technology

Question

Which three parameters should be checked when you are troubleshooting DWDM technology? (Choose three.)

Answers

Explanations

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A. B. C. D. E. F.

ACF.

DWDM (Dense Wavelength Division Multiplexing) technology is a technique used for transmitting multiple data streams over a single optical fiber by using different wavelengths of light. When troubleshooting DWDM technology, there are several parameters that should be checked to determine the root cause of the issue. The three parameters that should be checked are as follows:

A. Out-of-Multiframe (OOF): Out-of-Multiframe (OOF) is a parameter used to measure the number of frames that have errors in the received data stream. When troubleshooting DWDM, it is important to check the OOF to ensure that the data stream is error-free. If there are errors in the data stream, it can cause issues with the transmission of data and can lead to a loss of data.

B. Signal-to-Noise Ratio (SNR): Signal-to-Noise Ratio (SNR) is a measure of the strength of the signal compared to the amount of noise in the signal. When troubleshooting DWDM, it is important to check the SNR to ensure that the signal strength is sufficient and that there is not too much noise in the signal. If the SNR is too low, it can cause issues with the transmission of data and can lead to a loss of data.

C. Loss of Pointer (LOP): Loss of Pointer (LOP) is a parameter used to measure the loss of synchronization between the transmitter and receiver. When troubleshooting DWDM, it is important to check the LOP to ensure that the synchronization between the transmitter and receiver is maintained. If there is a loss of synchronization, it can cause issues with the transmission of data and can lead to a loss of data.

D. Crosstalk: Crosstalk is a phenomenon that occurs when the signal from one channel interferes with the signal from another channel. When troubleshooting DWDM, it is important to check for crosstalk to ensure that there is no interference between channels. If there is crosstalk, it can cause issues with the transmission of data and can lead to a loss of data.

E. Channel Power: Channel Power is a measure of the strength of the signal in a particular channel. When troubleshooting DWDM, it is important to check the Channel Power to ensure that the signal strength is sufficient for the channel to operate correctly. If the Channel Power is too low, it can cause issues with the transmission of data and can lead to a loss of data.

F. Wavelength: Wavelength is the distance between two peaks of a light wave. When troubleshooting DWDM, it is important to check the wavelength to ensure that the correct wavelength is being used for the transmission of data. If the wavelength is incorrect, it can cause issues with the transmission of data and can lead to a loss of data.

In summary, when troubleshooting DWDM technology, the three parameters that should be checked are Out-of-Multiframe (OOF), Signal-to-Noise Ratio (SNR), and Loss of Pointer (LOP). Checking these parameters can help identify the root cause of any issues with the transmission of data and prevent data loss.