Using switches, routers, internal firewalls, and other devices, you can restrict network traffic with a which limits what and how computers are able to talk to each other.

professionals can use many types of technology that can them. some examples are, computers (they research and can use for programs for data, they are also used for job applications, school work, and even to make new ideas), speedometers (can get data for unknown data), sometimes something as small as a pen (used for rough drafts, to insert data, and again job applications).