Certified Incident Handler (ECIH) — Question 51

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.

Answer options

Correct answer: D

Explanation

The correct answer is D, as QR codes and barcodes are specifically designed for scanning and reading product information at checkout. RFID and NFC involve different types of communication, which are not the primary methods used in this context. QUIC is a transport layer network protocol and does not relate to product scanning at a supermarket.