Choose the communication technologies in descending order of their data transfer rates.
Answer: 
Explanation:
Following are the communication technologies in descending order of their data transfer rates.
USB 2.0
IEEE 802.11g
802.11b
Bluetooth
USB 2.0 has a maximum data transfer rate of 480Mbps.
IEEE 802.11g has a maximum data transfer rate of 54Mbps.
IEEE 802.11b has a maximum data transfer rate of 11Mbps.
Bluetooth has a maximum data transfer rate of 1Mbps.
UTP Category 5 and Category 6 are types of communication cables.
Reference. TechNet, Contents. “Planning a Secure Wireless Service”