Answer: Operate over existing telephone lines to carry voice, data, and video.
Explanation:
Digital subscriber line is a means of transferring high bandwidth data over a telephone line. Such data could be a voice call, graphics or video conferencing. DSL uses a user's existing land lines in a subscriber's home, allowing users to talk on a telephone line while also being connected to the Internet. In most cases, the DSL speed is a function of the distance between a user and a central station. The closer the station, the better its connectivity.
172.30.0.0: private network
10.20.1.0: public network
What truly sets macs apart is the desktop as they don't have a separate tower system like most other systems do
A Human-Machine Interface (HMI) is a graphic terminal that allows the robot operator to control, monitor, and collect data from the robot system.
(https://www.robots.com/faq/what-is-a-hmi)
