In the following iterations, the smallest operating unit that competes for system resources is ()?

• A.Task
• B.Memory
• C.Interruption
• D.Semaphore

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Which of the following application scenarios needs voice function ()?

• A.bracelet for the elderly
• B.Street light
• C.Electric meter
• D.Water meter

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Among the following options, what is not the problem that the smart manhole cover can deal with ()?

• A.Personnel go to the well without permission
• B.Communication cable is lost
• C.Flooded road surface
• D.manhole cover is missing

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Which of the following is correct about eLTE-IoT small packet data fast transmission?

• A.The small packet fast transmission mechanism controls the packet length sent by the wireless link in a small range
• B.For each small packet base station, it will quickly feedback whether it is successfully received, if it fails, the terminal will retransmit; otherwise, continue to send
• C.Fast feedback of the reception result improves the uplink transmission efficiency.
• D.The small packet fast transmission mechanism controls the packet length to reduce the probability of interference during the data packet transmission process

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In the hierarchical division of the Internet of Things, does Huawei's OceanConnect act on ()?

• A.network layer
• B.Application layer
• C.Perception layer management
• D.platform layer

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