ITPEC IP October 2019 Question 91
ITPEC IP October 2019 — Question 91 of 100
RFID is the technology used by contactless IC cards such as public-transport tickets. A reader and the card exchange identification or transaction data through radio waves without direct electrical contact, and relevant card and communication specifications are internationally standardized.
Answer (b)
Why not others:
- IrDA uses infrared light and normally requires a short, aligned optical path
- Bluetooth is a general short-range wireless network for devices
- Wi-Fi provides wireless LAN connectivity over a broader network
Key rule: RFID identifies and exchanges data with tags or contactless cards by radio; Bluetooth and Wi-Fi are general device-networking technologies.
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