When there are no conditions within the intranet to establish a DNS server, and do not want to use IP to access the site, what files should be configured

Hosts
The Hosts file is a file that is responsible for fast resolution of IP addresses and domain names in the Linux system, and is stored in the/etc/directory in ASCII format. The Hosts file contains a mapping between the IP address and the host name, and also includes the host alias. in the absence of a domain name resolution server, all network programs on the system can query the file to resolve the IP address corresponding to a host name , otherwise it will need to be resolved by using a DNS service program. Fast and easy access can be achieved by adding common domain names and IP address mappings to the Hosts file.

When there are no conditions within the intranet to establish a DNS server, and do not want to use IP to access the site, what files should be configured