The southbound device sends AT commands to SoftRadio through the serial port. As a result, SoftRadio does not display any information. The reason is ()? (multiple choice)

• A.SoftRadio received an AT command that cannot be sorted out
• B.There is a problem with the connection between the southbound device and the PC, and SoftRadio does not receive data
• C.All of the above are possible
• D.The sent AT command does not end with fr/n

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IoT security is the cornerstone of iot and is a problem that the IoT must face and solve.

• A.Error
• B.Correct

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What are the main challenges facing the development of the Internet of Things industry

• A.Complex network connection
• B.Long new business launch cycle
• C.Human resources are tight
• D.There are many terminal types and integration is difficult

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What is the main function of the industrial IoT gateway as a convergence device of the local leased network to provide edge computing capabilities. Ensuring the implementation of local response.

• A.True
• B.False

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Regarding the features of the OceanConnect platform, the following is not under the permission management ()?

• A.Data storage encryption
• B.Login certificate
• C.Account sub-permissions
• D.Access permissions

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