<span>The character as a type of device special file is typically used for devices connected to USB ports.
</span>These character<span> special </span>files<span> are also called </span>character<span> devices. They provide unbuffered, direct access to the hardware device. </span>
Answer:
Call tracking system
Explanation:
It helps to measure total amount of visitors per month and based on the volume of visitors, it calculates how many phone numbers should be displayed to show a different number for each clique.