For emergency handling of business interruptions, fault location should be performed as soon as possible, and then the business should be resumed.

• A.FALSE
• B.TRUE

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Which of the following description is wrong about the content of the formula for calculating the maximum line rate (N=Ratc/((L+7+1+M)x8))?

• A.M is the frame gap, and the minimum IFG (minimum frame gap) is 8 bytes.
• B.Rate indicates the line rate of the physical layer. If the device port is FE, then Rate=100Mbit/s.
• C."8" outside the brackets is 1 Byte containing 8 Bits
• D.L is in standard Ethernet frame length with a minimum value of 64Bytes

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The reasons for the discrete business are? (Multiple choice)

• A.The cross-connection configuration on the network element is wrong.
• B.The logical fiber connection of the network element is inconsistent with the physical fiber connection.
• C.The network element side configuration data is not uploaded to the U2000.
• D.There is an outbound subnet service whose source or sink port is not within the scope of network management.

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What common methods for MSTP device fault location can be summarized as?

• A.One board change, two loopbacks, three analysis.
• B.One loopbacks, two board change, three analysis.
• C.One analysis, two board change, three loopbacks.
• D.One analysis, two loopbacks, three board change.

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Which of the following reasons may cause a business error? (Multiple choice)

• A.Dispersion compensation is unreasonable, such as under- or over-compensation
• B.The optical power of the incoming fiber is too high or too low
• C.The temperature in the equipment room is too high
• D.The tail wire connector is seriously polluted
• E.Transmitting laser performance degradation of the originating OTU board

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