Final answer:
The most effective way to ensure workstation configuration consistency, prevent rogue software installation, and maintain up-to-date patches in a large company is by using a configuration management system such as Microsoft's System Center Configuration Manager (SCCM). Regular audits using network scanning tools can also help detect and address any unauthorized software installations or deviations from the common configuration.
Step-by-step explanation:
The most effective way to ensure that all workstations in a large company have a common configuration, do not contain rogue software installation, and have up-to-date patches is by using a configuration management system. A configuration management system allows IT administrators to centrally manage and control the configuration, software installations, and patching of all workstations. It ensures consistency, reduces the risk of rogue software, and simplifies the task of applying patches.
One popular example of a configuration management system is Microsoft's System Center Configuration Manager (SCCM). SCCM provides features like remote software deployment, hardware and software inventory management, and patch management. It allows IT administrators to define a standard workstation configuration, deploy software installations, and schedule updates and patches across all workstations.
In addition to using a configuration management system, it is important to regularly audit workstations for any unauthorized software installations or deviations from the common configuration.