1. D. A signature analysis will compare a file’s header or signature to its file extension.
2. A. A file header identifies the type of file and is located at the beginning of the file’s data area.
3. C. The Windows operating system uses a file’s extension to associate the file with the proper application.
4. B. Unix (including Linux) operating systems use a file’s header information to associate file types to specific applications.
5. D. When determining which application to use to open a file, Mac OS X gives first precedence to “user defined” settings, second precedence to creator code metadata, and third precedence to filename extensions. If none of these are present, other rules come ...