1 Apr, 2007
Bluetooth Interview Questions
- Why is Bluetooth called a cable replacement technology? -
Bluetooth technology allows the creation of Personal Area Networks without cables or wires that are usual in home networks.
- Give a generic description of Bluetooth? -
Bluetooth is a low-cost, short-range (RF) links between mobile PCs, mobile phones and other portable devices. Bluetooth can transmit through solid, non-metal objects.
- Why can Bluetooth equipment integrate easily in TCP/IP network? - Because Bluetooth uses wireless LAN standards IEEE for data transmission.
- Is it possible to connect multiple Bluetooth hubs? -
No, only one hub can be used at a time with a computer. USB or Serial devices can be added.
- What is FCC and how does it relate to Bluetooth? -
FCC is Federal Communication Commission, which issues licenses to the stations for specific frequencies. It also decides who is able to use which frequency for what purpose. Since Bluetooth is using unlicensed spectrum, FCC has no direct involvement with Bluetooth
- Under what frequency range does Bluetooth work? -
2.45 GHz is the frequency range.
- Do Bluetooth devices need line of sight to connect to one another? -
No.
- Which technology is used in Bluetooth for avoiding interference? - Frequency hopping is the technology used in Bluetooth.
- Bluetooth signals do not interfere with our PCs or cordless phones or portables. Why? -
Bluetooth uses low-power signals, it plays around in 2.45 GHz range, while most of consumer devices would be using 900 MHz.
- What is Airport? -
Airport is a wireless communications system, like Bluetooth. It is based on the IEEE 802.11 recommendation. It also uses 2.4 GHz frequency band, but its range is about 45 meters and it boasts a transmission speed of 11 Mbit/second. It is developed by Lucent Technologies.
