The naming format of the zip package of the device profile is as follows ()?

• A.model_deviceType_manufacturerld.zip
• B..deviceType_manufacturerld_model_zip
• C.manufacturerld_deviceType_model.zip
• D.manufacturerld_model_deviceType.zip

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Huawei LiteOS memory management is divided into static memory management and dynamic memory management, of which dynamic memory has the advantage of allocating on demand and no fragmentation.

• A.Error
• B.Correct

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Regarding the description of the northbound application to register directly connected devices, which is incorrect ()?

• A.When registering directly connected devices, if timeout is set to 0, there is no timeout setting
• B.Register directly connected device interface, not only can be used to register directly connected devices, but also can be used to register non-directly connected devices
• C.After the interface of the registered direct-connected device is called, if the binding is not completed within the timeout range, the device registration will be invalid
• D.When registering directly connected devices, nodeid recommends using the MAC address of the device

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Is NB-LOT working in () mode the most power-saving?

• A.PSM
• B.DRX
• C.EDRX
• D.PSRP

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In device management, DMServer passes commands to the gateway through the () protocol to complete the configuration management of the device?

• A.MQTT
• B.SMTP
• C.HTTPS
• D.CoAP

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