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________ gives an exact, up to the second state of all devices on a network.

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________ gives an exact, up to the second state of all devices on a network.

(a) Signaling

(b) Security

(c) Presence detection

(d) Power consumption

The question was posed to me by my college director while I was bunking the class.

Question is from IoT Characteristics and Reliability Issues topic in section Emerging Technology and Toy Designs, IoT Robustness and Reliability of IOT

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Correct choice is (c) Presence detection

For explanation I would say: Its important to immediately know when an IoT device drops off the network and goes offline and when comes online back. Presence detection of IoT devices gives an exact, up to the second state of all devices on a network.

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