Among the following options, which belong to the IoT hierarchy are ()? (Multiple choice)

• A.Application layer
• B.Platform layer
• C.Perception Layer
• D.Data link layer

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The following () scenario belongs to the control message delivery process? (multiple choice)

• A.Smart home mobile phone APP to remotely query the status of home appliances
• B.Smart street light application remotely turns on street lights in an area
• C.Smoke sensor reports abnormal smoke at home
• D.Fleet management application sets the reporting period of car engines

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Does the LiteOS open API interface not have the following () functions?

• A.Compatible with Linux
• B.Mask the underlying differences
• C.The interface is designed to be friendly
• D.Easy to understand the kernel

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Which of the following products is not a Huawei industrial gateway

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

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At what level is Huawei's edge computing gateway deployed?

• A.Between the application layer and the platform layer
• B.Between the access layer and the network layer
• C.Between the data storage server and the cloud platform
• D.Between the network layer and the platform layer

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