NFC - Devices are placed in close proximity within line of sight for sharing data wirelessly, IR - Devices use haptic confirmation for sharing data wirelessly, Tethering - Devices are connected via a wire for sharing data or connectivity, Bluetooth - Devices are paired using a code for sharing data wirelessly, ZigBee - An open standard based on the IEEE 802.15.4 PAN standards, maintained by the ZigBee Alliance. Use a variety of ISM bands with 2.4 GHz and 915 MHz bands, Z-Wave - A proprietary wireless standard maintained by Silicon Labs, supports throughput up to 40 kbps over distances of 10-100m, uses the 800-900 MHz ISM bands,

A+ Exam - Wireless technologies

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