For each listed prerequisite, identify if it is mandatory or not mandatory to run the...

According to the CyberArk documentation1, the prerequisites for running the PSM Health Check are:

PSM service installed on Windows 2016 or Windows 2019

Web Server (IIS 8.5) role is installed

A valid SSL certificate is installed on the Web Server

Therefore, these prerequisites are mandatory for the PSM Health Check to work properly. The PSM service installed on Windows 2008 R2 is not mandatory, as it is not supported by the PSM Health Check2.

References: PSM Health Check, PSM Health Check - CyberArk