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Question list

List of questions

Question 1

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According to the IEEE 802JQ standard, where is the VLAN ID field on the Ethernet?

Question 2

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What are the reasons for the R-Los alarm reported on the 0TU board?

Question 3

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Which of the following light source technologies does the 100GOTU board use?

Question 4

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The 802.1Q tag header contains a two-byte TPID. Which of the following is its standard value?

Question 5

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Both the 1310nm and 1550nm transmission windows are low-loss windows. In the DWDM system, only the 1550nm transmission window is used. Which of the following options is the main reason?

Question 6

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Which of the following alarms will be reported by the peer end when it is detected that the error code exceeds the limit in the B2 byte?

Question 7

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In the CES service, which of the descriptions of "packet loading time" and "jitter buffer time" is wrong?

Question 8

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DCM optical power debugging requires the input of DCM to be no greater than which of the following values?

Question 9

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The DWDM system has extremely high requirements on the stability of the light source. Which of the following factors will affect the stability of the light source?

Question 10

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The EDFA erbium-doped fiber amplifier is a key component of the new generation of optical fiber systems. Which of the following options are correct for the description of its advantages?

Question 126 - H35-260 discussion

The characteristic of the open DWDM system is that there are no special requirements for the optical interface of the multiplexing terminal, and only these interfaces are required to comply with the optical interface standard recommended by ITU-T. The DWDM system adopts wavelength conversion technology to convert the optical signal of the multiplexed terminal into a specific wavelength, and the optical signal of different terminal equipment is converted into different wavelengths that comply with ITU-T recommendations, and then multiplexed.