Answer:
RFID scanning or Barcode reader
Explanation
Smart refrigerators have inbuilt RFID scanning technology that help monitor the stock that is inside your fridge. Once you pass your items through the inbuilt RFID scanner in the fridge, the barcode of your items is cross-referenced with a database and given a unique tag for identification. This technology helps detect and track the stock that is inside your fridge and when you start running low, the RFID can be triggered to send a reminder as a notification on your email or a text message.
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D. The word "food" is the most abstract because it is the least specific and does not specify what food it is exactly.
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2 I think because 2 I think is binary I’m sorry if this is wrong
Answer:
Using the DNS service.
Explanation:
The computer sends a UDP packet with the domain name in it to port 53 of the configured DNS server, and expects a reply with the IP address of that domain.