Which of the following applies to external DOS commands?
Options: External commands reside in RAM until called, External commands are stored on disk separately from COMMAND.COM, External commands must always be used with the /e switch, External commands can only be executed from a batch file.
Options: Where the before-images are applied to the database, Where the after-images are applied to the database, Where the after-images and before-images are applied to the database, Switching to an existing copy of the database
The approach used in top-down analysis and and design is
Options: to prepare flowcharts after programming has been completed, to identify a top level function and then create a hierarchy of lower level modules and components, to identify the top level functions by combining many smaller components into a single entity., All of the above
. If you are working in English (US), Chinese or Japanese, Excel 2002 can speak data as you enter it, to help you verify accuracy. How do you activate this feature?
Options: a. Point to speech on the tools menu, and then click show text to speech toolbar. b. Click validation on the data menu c. Point to speech on the tools menu, and then click speech recognition d. All of above
The physical layer, in reference to the OSI model, defines
Options: data link procedures that provide for the exchange of data via frames that can be sent and received, the interface between the X.25 network and packet mode device, the virtual circuit interface to packet-switched service, All of the above