In a multi-task system, each task needs to be synchronized or mutually exclusive to realize the protection of critical resources, and the () function can provide support.

• A.Queue
• B.Task
• C.interrupt
• D.In the signal

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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.There is a problem with the connection between the southbound device and P', SotRadio does not receive data
• B.SoftRadio received an unrecognized AT command
• C.All of the above are possible
• D.The sent AT command does not end with irin

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AMI is a complete system including smart meters, advanced communication networks, collectors and concentrators, and background software. It can use a two-way communication system to record user detailed load information

• A.True
• B.False

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Which vendor is most suitable for operating Huawei's openife solution ()?

• A.Application Provider
• B.Operator
• C.Huawei
• D.Equipment Supplier

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Which of the following products is not a Huawei industrial gateway

• A.EEM
• B.AR550
• C.AR2500
• D.AR530
• E.AR500

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