The Traffic Manager

A computer communicates with other computers through network interfaces. In general, there is a network interface for each network card (for computers that have several network cards). A network card (Ethernet or wifi) has a mac address, which identifies the network card on the network. To operate a network card, you must configure the interface that corresponds to it. The if config command allows you to know the network configuration and configure the network by hand or in a script. On the internet, stations called hosts have IP addresses, which allow them to be identified, but a host can also often be designated by a host name or domain name (like google.Com). The DNS (domain name system) was designed to solve this problem, by offering a hierarchical model. Each machine (printer, terminal, server, etc.) connected to a network is assigned a small name. This name is unique within the domain to which it belongs. Thus, for the domains domain1.Com and domain2.Com, we can have two machines with similar or different names.

Autorentext

Abdoul Hamid Derra - Ingénieur en systèmes d'information, entrepreneur, chercheur, développeur d'études stratégiques, conseiller pédagogique, santé mère-enfant, nutritionniste.