Automation is/are the replacement of human operation and control of machinery with some form of programmed control. Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.
A computer network is a set of computer systems also called nodes which are connected together via communication channels.
These communication links can be telephone lines, modem (in old times) and nowadays these communication links are broadband, digital subscriber line DSL, cables, radio waves etc which are the communication links used for transmitting digital signals. Every communication link has its own data transmission speed. For example Fast Ethernet can provide data rate of 100 mbps and use coaxial cables, twisted pair cables and fiber optic cables.
Now what can be the nodes? These can be devices from a PC to a laptop computer or a smart phone etc.
The main purpose of a computer network is to share resources, communicating electronically such as videoconferencing, access to internet and exchanging data or files between the computers. These resources can be printers, storage devices etc.
Some types of networks are Local Area Network (LAN), Wide Area Network (WAN), Metropolitan Area Network (MAN), Internetwork (internet).
