Computer generated processes require unique address to send and receive information. Port numbers are used for that purpose.
Process socket is a combination of host IP and process port number. Easy example is the Telnet service that is using port 23 by default. Knowing host IP address (for example 12.34.45.56) the socket address can be created (12.34.45.56:23). Even though Telnet’s default ...
DNS is the hierarchical way of associating domain names with IP addresses. It includes the network of databases and computers, together with the Application layer service. DNS is relying on multiple databases spread out across the globe, instead of using single file.
DNS can be divided to the components for effectiveness:
Resolvers are the clients that require domain name information. HTTP is ...
In the times when Internet was not bigger than 1000 hosts, all the nodes in the network relied on the single file called HOSTS.TXT that was containing list of host names and their IPs.
Today, this type of IP address association can be seen very rarely. Network is relying on the text file that looks similar to the one shown in ...
The group of computers that belong to the same company/organisation and share the part of the IP address is called domain. It can be identified by the domain name, that is usually representing type of the company/organisation.
In networking term Fully Qualified Domain Name (FQDN) is referring to a local host name together with its domain name.
Domain name consists of characters ...
