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DomainThe name of an entity on the Internet. Domain names can be suffixed with the two-digit code that indicates nationality eg, uk. They can also be suffixed to indicate that the entity is of the government, a company, an educational institution, etc.

Executable program   A file that will start and run when you type in the name and press enter, click the file icon or put its name in the Run window of the Windows Program Manager.

FingerA program that seeks out information regarding users on a specified Internet host.