The OSI model consists of seven layers that describe network communication functions. Each layer has specific responsibilities in the data transmission process.

LANs and WANs represent different network types serving different geographic scales. Network topology refers to how network components are physically or logically arranged.

A computer network is a group of interconnected computer systems sharing resources and interacting through shared communication links. Networks enable efficient resource and information sharing.

Storage devices hold data and programs in computer systems. They include primary memory (RAM) and secondary storage like hard drives and solid state drives.

Output devices convert processed computer data into human-readable or usable formats. Monitors, printers, and speakers are common examples of output devices.

Input devices are electromechanical units that allow users to provide data to computers for processing. They are fundamental components of any computer system.

A system is an integrated set of regularly interacting or interdependent components created to accomplish a defined objective. Information systems provide essential business value through data transformation and management.