One of your clients uses a wireless IrDA printer with her laptop. Which of these is a disadvantage of IrDA connections?
A) Won’t work when there’s no line-of-sight
B) Susceptible to interference from microwave ovens and other RFI
C) Does not work with all applications
D) Requires a mobile broadband connection
E) Gets frizzy when the humidity is high
The answer: A) Won’t work when there’s no line-of-sight
The Infrared Data Association (IrDA) standard uses infrared light to transmit data between devices. Unlike 802.11 wireless, the light used by IrDA must use a line-of-sight to maintain connectivity.
Want to know more? Watch “Laptop Communications.”
Today’s laptops employ many communications methods that use many different technologies. In this video, you’ll learn about Bluetooth, infrared, mobile broadband, Ethernet, and modems.