What functionality does the 'netstat' command provide in Windows?

The 'netstat' command in Windows is primarily used to provide information about network connections. When executed, it displays a list of active connections, including their current status, which can help in diagnosing network issues by showing which ports are being used and what connections are established. This functionality allows users to monitor the network communication on a system effectively. For instance, it can reveal whether a particular service is listening on a port or if there are unexpected connections that could indicate a security issue.

The other options focus on capabilities that 'netstat' does not perform. Listing all running applications pertains more to commands such as 'tasklist', monitoring active processes relates to 'task manager' or 'process explorer', and managing file system integrity is usually handled by commands like 'chkdsk'. Therefore, the correct choice highlights 'netstat' as a vital tool for checking network connection statuses.