Among the following options, what are the benefits of the interrupt mechanism that belongs to Huawei LiteOS ()?

• A.The CPU spends a lot of time waiting and querying the status of peripherals
• B.When peripherals do not need CPU intervention, the CPU can perform other tasks
• C.Reduce the real-time and execution efficiency of the system
• D.When the peripheral needs the CPU, it needs to wait for the current task to end

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Does eLTE-loT specifically contain () network elements? (Multiple choice)

• A.CPE (User Access Terminal) .
• B.Business Engine
• C.Network Management
• D.loT integrated base station .
• E.lot module .

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Does eLTE-IoT specifically contain () network elements? (multiple choice)

• A.CPE (User Access Terminal)
• B.IoT module
• C.loT integrated base station
• D.network management
• E.service engine

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Among the following options, the description of the Huawei Lighting IoT solution is wrong ().

• A.The application layer performs data statistics and monitoring operation and maintenance through the CityConnect platform
• B.The platform layer adopts the Huawei OceanConnect platform based on AgileController
• C.Perception layer uses external street light controller AR501L1Rc
• D.The network layer is connected to the IoT gateway through RFMesh technology for data back transmission

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CoAP protocol message format is simple, messages can be very short, use long connections, and have a heartbeat keep-alive mechanism.

• A.True
• B.False

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