COMPUTER NETWORKING

WIRELESS NETWORKS AND MOBILE IP

WIRELESS NETWORKS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which one of the following wireless transmission types requires a clear LOS to function?
A
Bluetooth
B
NFC
C
Infrared
D
Wi-Fi
Explanation: 

Detailed explanation-1: -FHSS is used to take advantage of the 79 channels allocated to the Bluetooth band. NFC requires a clear LOS to function.

Detailed explanation-2: -24 non-overlapping unlicensed national information infrastructure (UNII) channels in 5 GHz frequency band.

Detailed explanation-3: -Yagi antennas are good for making point-to-point links in long narrow areas (for instance, connecting to a distant point in a valley) or for point-to-point links between buildings. They can also be used to extend the range of a point-to-multipoint network.

There is 1 question to complete.