Which of the following statement about the SSH connection is wrong?

• A.SSH protocol can encrypt all transmitted data, effectively preventing information leakage during remote management process
• B.SSH can be applied to remote encrypted connections, file transfer encryption
• C.SSH protocol works at the network layer
• D.From the client side, SSH provides two levels of security verification

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When you add a new network element on U2000, it cannot be added, what are the possible reasons? (Multiple choice)

• A.SNMP on the U2000 and the parameters configured on the NE are inconsistent
• B.The IP addresses of the network element device and the gateway are not in the same network segment
• C.U2000 NE equipment cannot be connected
• D.The SNMP version on the U2000 is inconsistent with the version configured on the NE

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When OLT traffic is scheduled, which of the following traffic will be marked as green?

• A.Flow rate above CIR but below PIR
• B.Flow rate above PIR
• C.Flow rate below CIR
• D.Flow rate above CBS

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The maximum splitting ratio supported by 10GGPON is:

• A.1:256
• B.1:128
• C.1:64
• D.1:32

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When the ONU is replaced in the eSight system, which of the following options can be used to reselect the ONU?

• A.ONU MAC
• B.ONU ID
• C.ONU IP
• D.ONU SN

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