Use of internet to connect a wide variety of devices, machines and sensors for empowering brick and mortar stores by giving them the same access to data that online stores have is a facility falls under which of the following technologies?

The correct answer is D, Internet of Thing. The Internet of Things means giving everyday objects — machines, sensors, meters, shelves, vehicles — an address on the internet so that they can report what they sense and be controlled from a distance. Connecting a physical store's shelves, cameras and counters in this way gives the shopkeeper the same live data on stock and customer behaviour that an online seller reads from its website, which is exactly the facility the question describes. Option A, artificial intelligence, is the wider field of making machines reason, decide and recognise patterns; it may use the data these sensors send, but it is not the act of connecting them. Option C, machine learning, is a branch of that field in which a program improves from data instead of being programmed rule by rule. Option B, deep learning, is a further branch of machine learning built on multi-layer neural networks. Exam tip: IoT gathers the data, AI and machine learning make sense of it.