Bluetooth, NFC & RFID for A+

Concept 1

Required terms

Bluetooth: Short-range wireless technology commonly used for peripherals, headsets, and audio streaming; typical range from a few meters up to tens of meters depending on class. NFC: Very short-range communication used for tap-to-pair, contactless payments, or data exchanges; requires devices to be nearly touching. RFID: Radio-based identification technology used for tags and tracking; typically read-only or simple read-write interactions used in inventory, badges, or access control.

Concept 2

How Bluetooth, NFC & RFID works

Bluetooth is used for personal-area device connections (audio, input devices). NFC is used for tap-based interactions and quick exchanges requiring near-contact. RFID is generally about tagging and scanning for identification and inventory. A technician should map the scenario to the technology: pairing earbuds -> Bluetooth; tap payment or contactless pairing -> NFC; scanning tagged items or badge access -> RFID.

Concept 3

Common confusion

- Treating NFC as an alternative to Bluetooth for range-based connections; NFC is not for sustained connections and is primarily used to initiate or complete an action.

Concept 4

Core 1 (220-1201) question cues

Given a pairing scenario, pick the correct short-range technology and the first support step; Identify whether a use case (payment, pairing, inventory) better fits NFC, Bluetooth, or RFID.

Q1.In an A+ question, this detail appears: A user cannot pair wireless earbuds: Bluetooth troubleshooting steps (ensure discoverable mode, remove old pairings). Which option matches it?

Q2.For this A+ objective, the scenario says: Tap-to-pay not working on phone: verify NFC is enabled on both devices and that payment app is configured. What is the best match?

Q3.A user reports this support situation: Inventory scanner not reading tags: check reader orientation, tag type, and reader power. Which option should the technician choose?