Which of the following statements about Bluetooth are true?
Each correct answer represents a complete solution. Choose two.
A.
It forms a network whenever two Bluetooth devices come within a range of ten meters.
B.
It has a maximum transmission range of 200 meters.
C.
It does not require a line-of-sight connection between devices.
D.
It requires a line-of-sight connection between devices.
Explanation:
Bluetooth is a standard for very low powered and short-range radio connections. As a radio
technology, it does not require a line-of-sight connection as an infrared connection does. Bluetooth
is used to link Personal Digital Assistant (PDA), mobile phones, and laptops, and provides them with
Internet access via hot spots. It uses the 2.4 Ghz spectrums with a data transfer rate of about 1
Mbps. Bluetooth networks are not permanent as compared to other networks where a central
communication point is needed such as a hub or a router. A Bluetooth network can be formed when
two Bluetooth devices are within a range of ten meters, enabling them to communicate directly with
each other. This dynamically created network is known as a piconet. A Bluetooth-enabled device can
support up to seven other Bluetooth
devices in a master-slave relationship; the first Bluetooth device is the master, and all the other
devices are slaves that communicate with the master in one piconet. The maximum transmission
range of Bluetooth is around 10 meters.
Answer option D is incorrect. The infrared devices require a line-of-sight connection between
devices.
Answer option B is incorrect. The maximum transmission range of Bluetooth is around 10 meters.
Reference: “http://www.bluetooth.com/bluetooth/”