Question:
What technology enables a cell phone to be used as a hands-free device?
- Wi-Fi
- Bluetooth
- 4G
- NFC
Explanation: Bluetooth provides a way to connect wireless devices, such as headsets, to a nearby mobile device. Wi-Fi and 4G provide WAN access to voice and data. Yosemite is the code name applied to a recent version of Apple OS X.
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