What command is used to display information about all logged-in sessions of the local computer without parameters?

The command that displays information about all logged-in sessions of the local computer without parameters is "net sessions." This command is part of the Windows networking tools and provides an overview of all active sessions on a machine, including details such as user names and their respective connection states. It is a useful tool for system administrators to monitor active connections and manage network resources effectively.

In addition to this, the "net sessions" command allows for further actions, such as disconnecting user sessions if necessary, enhancing its utility in managing multiple users on a networked system. Understanding how to utilize this command is crucial for those interested in network administration and monitoring, particularly in a digital forensics context where session management may be critical for evidence gathering and analysis.

Other options do not correspond to standard commands recognized in the context of Windows operating systems, making them less applicable in this scenario.