1 Apr, 2007
Bluetooth Interview Questions
- What is Piconet? -
A collection of devices connected through Bluetooth technology in an ad hoc fashion.
- What are the three main types of connection used by Bluetooth? -
Single slave, Master slave, Scatternet .
- What is FEC in Bluetooth? -
Forward Error Correction is a method by which Bluetooth increases its noise immunity. FEC is a method that enables a receiver to not only detect, but also correct errors in a transmission.
- Which method is primarily used for Voice transfer? -
Synchronous Connection Oriented (SCO) is a method primarily used for Voice transfer.
- What is the frequency range used for Bluetooth in Europe and United States? -
2402 MHz to 2480 MHz are the frequency ranges used in USA and Europe.
- List some Technology characteristic of Bluetooth? -
Omni directional, Adaptive output power to minimize interference, Support Synchronous & asynchronous services, Fast Frequency Hopping to avoid interference, Short data packets to maximize capacity during interface.
- Which company originally conceived and developed Bluetooth? - Ericsson.
- How does Bluetooth use frequency hopping for security? -
Bluetooth picks a random frequency out of 79 and then hops around the range about 1600 times per second.
- What is a Bluetooth dongle? -
A device that hangs outside of a computer, or phone to provide Bluetooth connection.
- What are the other (competing or not) wireless technologies? -
Wi-Fi, IrDa, EDGE, UWB (Ultra Wide Band)
