A "smart" device is characterized by its ability to leverage internet connectivity to enhance its functionality.
Here's why option D is correct:
* Internet Connectivity: Smart devices are connected to the internet, allowing them to access and utilize information from various online sources to improve performance and functionality.
* Enhanced Capabilities: This connectivity enables features such as real-time updates, remote control, data sharing, and interaction with other smart devices, distinguishing them from traditional devices.
* User Interaction: While being programmable by users without specialized training (B) is a feature of some smart devices, it is not the defining characteristic.
* Functionality: Performing multiple data functions simultaneously (A) and reapplying access controls (C) are capabilities that can be found in various devices, not exclusive to smart devices.
* Examples: Examples include smart home devices like thermostats that adjust settings based on weather forecasts accessed from the internet or smart assistants that provide answers by searching online databases.