Câu 23: 212-82: Certified Cybersecurity Technician

Leo has walked to the nearest supermarket to purchase grocery. At the billing section, the billing executive scanned each product's machine-readable tag against a readable machine that automatically reads the product details, displays the prices of the individual product on the computer, and calculates the sum of those scanned items. Upon completion of scanning all the products, Leo has to pay the bill. Identify the type of short-range wireless communication technology that the billing executive has used in the above scenario.

1. A. Radio-frequency identification (RFID)
2. B. Near-field communication (NFC)
3. C. QUIC
4. D. QR codes and barcodes — đáp án hiện tại