Answer:
Option D is correct because many newer appliances that incorporate computer technology, such as smart home devices and IoT devices, are designed to connect to other devices to exchange information and communicate with other systems. This is achieved through the use of various networking technologies, such as Wi-Fi, Bluetooth, and NFC, which enable these appliances to exchange data with other devices.
Option A is incorrect because newer appliances are typically not designed or intended to function as a backup for storing documents and other files. While some appliances may have storage capabilities, their primary purpose is not to provide backup storage.
Option B is incorrect because the computers used in newer appliances are often designed to meet the specific requirements of that appliance, and are not interchangeable with computers found in other appliances. Additionally, these computers are often integrated into the appliance's hardware, making it difficult or impossible to remove or swap out.
Option C is incorrect because while some newer appliances may have additional features or functions beyond their primary purpose, they are not designed to perform unrelated functions in the same way that a general-purpose computer can. These additional features are typically designed to enhance the appliance's primary functionality or improve user experience, rather than provide unrelated functions.