The Apache web server is one of the most popular web servers in the world. It has a number of common modules and these modules allow Apache to perform additional functions such as natively rewriting URLs to support SSL encryption. The Apache Modules can be switched off and this will reduce the server resource consumption. In Plesk, the Apache modules can be managed by using the utility optimization_settings. This utility can be used to enable/disable the Apache modules and also displays the status of all modules. The following command can be used to view the status of all Apache modules.
plesk bin optimization_settings -s
plesk bin optimization_settings --status