In an order-entry system in which manually-prepared source documents are entered online for immediate processing, which of the following is an example of an appropriate input-output control?
Answer(s): B
Self-checking digits may be used to detect incorrect identification numbers. The digit is generated by applying an algorithm to the ID number. During the input process, the check digit is recomputed by applying the same algorithm to the code actually entered.
A customer intended to order 100 units of product 296014, but incorrectly ordered nonexistent product 296015.Which of the following controls most likely would detect this error?
Answer(s): A
Check digit verification is used to identify incorrect identification numbers. The digit is generated by applying an algorithm to the ID number. During input, the check digit is recomputed by applying the same algorithm to the entered ID number.
A validation check used to determine if a quantity ordered field contains only numbers is an example of a(n):
A validation check at data entry verifying that a quantity field contains only numbers is an example of a programmatic means of ensuring the accuracy of an input value. Thus, it is an input control.
An accounts payable program posted a payable to a vendor not included in the online vendor master file. A control that would prevent this error is a:
Validity checks are tests of identification numbers or transaction cedes for validity by comparison with items already known to be correct or authorized. For example, social security numbers on payroll input records can be compared with Social Security numbers authorized by the personnel department.
Which one of the following input validation routines is not likely to be appropriate in a real-time operation?
Answer(s): C
The program controls listed prescreen or edit data prior to processing, but the sequence check is most likely to be used only in batch processing. A sequence -heck lets to determine that records are in proper order. For example, a payroll input file can be sorted into Social Security number order. A sequence check can then be performed to verify record order. This control would not apply in a real-time operation be :-,use records are not processed sequentially.
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