Learning objective
Explain networks and the internet, reproduce the worked example and justify a decision in the case study.
Before you begin
Systems and users
Understand
Networks connect devices through addresses, protocols, equipment, and transmission paths.
Worked example
A router directs packets between networks; a switch often connects devices within a local network.
Analysis and common mistakes
An IP address supports packet routing; DNS translates names into address information. Wi-Fi connection does not guarantee Internet access: the local network and external link are distinct.
Case study — reasoning
Devices reach a local printer but no websites. Check the Internet link and DNS before reinstalling every device; the common failure suggests a shared component.
Knowledge check
Summary
Networks connect devices through addresses, protocols, equipment, and transmission paths.
Sources for further study and verification
AI-assisted draft · Educator review not completed · Unofficial supplementary resource