Configuration files that govern how applications operate, Update and patch management procedures, Operational and system documentation, and Physical equipment and device settings are all correct.

Configuration management is about keeping systems consistent and traceable so configuration files that govern how applications operate are managed to ensure the same behavior across environments and to allow rollbacks when needed.

It also defines and enforces processes for update and patch management procedures so that software versions and fixes are applied in a controlled way and do not create unexpected drift between systems.

Part of the program is maintaining operational and system documentation because baselines, change logs, and configuration records are needed to reproduce configurations and to support audits and troubleshooting.

Finally a configuration program often covers physical equipment and device settings since hardware inventories and device level settings such as firmware options and network parameters must be controlled to keep environments consistent.

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