Carlos Has a Level 0 DFD Diagram Where One of the External

question 9

Multiple Choice

Carlos has a Level 0 DFD diagram where one of the external entities is the "Internal Revenue Service" - and he has a data store called "Tax Rate Table".He has drawn a data flow arrow from the Internal Revenue Service to the data store as the data has been loaded into the Tax Rate Table prior to the processing.What would be true?

• A)This is correct
• B)This is incorrect,'data at rest stays at rest until moved by a process' so he needs a process (like 'load Tax Rate Table')first in this system
• C)This is incorrect - he doesn't need a data flow as the data was loaded into the Tax Rate Table someplace else (within the payroll system someplace,but not in this process)
• D)This is almost correct.The correct diagram would be a dashed line indicating that the loading of the data was implied prior to the start of this process
• E)This is incorrect.What should happen is an 'external process' should be called at the start of the process - like "Call IRS for data load"