Question 1 :
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.
Question 2 :
Which technology is used in Bluetooth for avoiding interference?
Frequency hopping is the technology used in Bluetooth.
Question 3 :
How many SCO links are there in a piconet?
In a piconet, there can be up to three SCO links of 64,000 bits per second each.
Question 4 :
Which Bluetooth version uses adaptive frequency hopping? Why?
In Version 1.2 Adaptive frequency hopping method is used, which improves resistance to radio interference, and provides higher transmission speed.
Question 5 :
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.
Question 6 :
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.
Question 7 :
Which method is primarily used for Voice transfer?
Synchronous Connection Oriented (SCO) is a method primarily used for Voice transfer.
Question 8 :
What is the strength of the signal transmitted by powerful cell phones?
The powerful cell phones can transmit a signal of 3 watts.
Question 9 :
What are the other (competing or not) wireless technologies?
Wi-Fi, IrDa, EDGE, UWB (Ultra Wide Band)