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Which of the following data validation edits is effective in
detecting transposition and transcription errors?
A. Range check
B. Check digit
C. Validity check
D. Duplicate check
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Answer: B
A check digit is a numeric value that is calculated
mathematically and is appended to data to ensure that the
original data have not been altered or an incorrect, but
valid, value substituted. This control is effective in
detecting transposition and transcription errors. A range
check is checking data that matches a predetermined range of
values. A validity check is programmed checking of the data
validity in accordance with predetermined criteria. In a
duplicate check, new or fresh transactions are matched to
those previously entered to ensure that they are not already
in the system.
| Is This Answer Correct ? | 12 Yes | 0 No |
Which of the following is the MOST effective technique for providing security during data transmission? A. Communication log B. Systems software log C. Encryption D. Standard protocol
An IS auditor needs to link his/her microcomputer to a mainframe system that uses binary synchronous data communications with block data transmission. However, the IS auditor's microcomputer, as presently configured, is capable of only asynchronous ASCII character data communications. Which of the following must be added to the IS auditor's computer to enable it to communicate with the mainframe system? A. Buffer capacity and parallel port B. Network controller and buffer capacity C. Parallel port and protocol conversion D. Protocol conversion and buffer capability
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