The main function of gateway access authentication is to authenticate the identity of the gateway and prevent unauthorized access by illegal devices.
Correct : A
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Of the following options, which are not platform-layer secure, are ()?
Correct : D
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Intelligent ultrasonic water meter, the main function of the water temperature sensor ()?
Correct : A
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Among the following options, the common features of eMTC and NB-loT are ()?(multi-select).
Correct : A, D
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Sigfox utilizes ultra-narrow UNB technology, so his transmission rate is lower, usually ()?
Correct : C
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