When using the command 'whois', what type of information can you expect to retrieve?

The 'whois' command is utilized primarily to retrieve information about the registration of domain names. When you query a domain using 'whois', you get access to various details associated with that domain, including the name of the registrar, the registration and expiration dates, the administrative and technical contact information, and the name servers associated with the domain. This information is crucial for anyone looking to understand the ownership, management, and administrative structure behind a particular domain.

The other options, while related to network and system information, do not pertain to what 'whois' provides. Traffic statistics refer to the data related to network usage, local file system usage deals with how storage space is utilized on a specific system, and active network connections pertain to the current communications between devices on a network. None of these domains fall within the scope of the 'whois' command's functionality.