You can translate to any other IP address of any site and see the result to ensure that. If you have Apache server installed on your system and your localhost is running, it will show the index page of the localhost instead of the google page. Then go to your browser and type and see the results. Try to edit /etc/hosts and type the following: 127.0.0.1 That means the system query this file first before going to the DNS server, and if it finds the domain, it will translate it without going to any DNS servers. So even if you don’t have a DNS server or DNS server is unavailable, this file can translate IP addresses to names using /etc/hosts file. On Linux systems, this table is the /etc/hosts file. This file is responsible for IP addresses.
Every system will have to keep its copy of the table of the hostnames and their IP addresses.
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