What should be paid attention to when configuring extended ECC? (Multiple Choice)

• A.When setting the ECC extended mode remotely, you must ensure that the settings are correct in order. Otherwise, the unmanaged network element will not automatically resume communication with the network management system and must be reset to the site.
• B.Avoid communication by extended ECC mode between each subnet gateway network element.
• C.It is not recommended to set the gateway NE as the server. It is recommended to set the NE closest to the gateway NE as the server NE.
• D.The ECC extension mode of the remote NE must be modified first, and then the ECC extension mode of the gateway NE is modified.

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The collection and storage of on-site data includes periodic collection during normal operation of the equipment and collection of equipment failures. Generally, before the fault is processed, the maintenance personnel must collect and save the field data.

• A.TRUE
• B.FALSE

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MPLS APS is a network protection mechanism that implements service creation through the detection function of MPLS OAM.

• A.FALSE
• B.TRUE

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When the board detects that the error rate of the regenerator section signal exceeds 10 by detecting the B1 byte, the B1_SD alarm is reported.

• A.FALSE
• B.TRUE

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WDM multiplexes optical signals at multiple rates (wavelengths) through a single fiber for transmission. The digital signals carried by these optical signals must have the same rate and data format.

• A.TRUE
• B.FALSE

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