Which command-line tool is used to view all services running on a Windows system?

• A. sc query
• B. sc query status
• C. query sc
• D. sc query state=all

Answer: (D)

Viewing Windows services from the command line is done with the Service Control utility (sc.exe) and its query command. To see every service, including those not currently running, you pass a filter that selects all states: state=all. This tells sc to report services no matter whether they’re running, stopped, paused, or in some other state, giving you the complete list. Without this filter, the query tends to return only services in the active or default state, so you wouldn’t get the full view. The other forms either don’t apply the proper filter or use invalid syntax, so they don’t produce the comprehensive list that state=all does.