Asymmetric digital subscriber line (ADSL)
You can setup a network by itself for a computer Laboratory. The requirements are simply: computers, network cables, switches, softwares, and IP addresses. Computer engineers can also compute these computers with detailed users' access and restrictions. You can run only the required applications dedicated for this purpose. You can also define rules and policy in the computer Lab where we can restrict unnecessary sites.
Answer: Because the robotics help the train move
Explanation: