A technician needs to give users the ability to transfer files between mobile devices.
The technician teaches the staff how to use a file transfer method in which the devices need to be in close proximity with line-of-sight access to each other.
Which of the following technologies is the technician teaching to the staff?
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A. B. C. D.A.
The technician is teaching the staff how to use a file transfer method that requires the devices to be in close proximity with line-of-sight access to each other. This is a characteristic of infrared (IR) technology, which uses light waves to transmit data between devices.
IR technology has been used for many years for various applications, including remote controls and wireless data transfer. IR communication requires that the devices are within a few meters of each other, and there must be a clear line of sight between the devices. This means that there cannot be any objects blocking the path of the IR signals, or the data transfer will fail.
Bluetooth, on the other hand, is a wireless technology that uses radio waves to transmit data between devices. Bluetooth has a range of about 10 meters and does not require a clear line of sight between devices. Bluetooth is commonly used for wireless headphones, speakers, and other accessories.
Tethering refers to the practice of using a mobile device as a modem to provide internet connectivity to another device, such as a laptop or tablet. This is typically done using a USB cable, although it can also be done wirelessly using Bluetooth or Wi-Fi.
NFC (near field communication) is a technology that allows two devices to communicate with each other when they are brought into close proximity, typically within a few centimeters. NFC is commonly used for contactless payment systems, such as Apple Pay and Google Wallet.
In summary, the technician is teaching the staff how to use IR technology for file transfer between mobile devices, where the devices need to be in close proximity with line-of-sight access to each other.