CISA Questions And Answer 2006试题资料

CISA Questions And Answer 2006试题资料

大量题目试题资料,DOC文档258页。

Area: 3
141. Which of the following data validation edits could be used by a bank, to ensure the correctness of bank account numbers assigned to customers, thereby helping to avoid transposition and transcription errors?
A. Sequence check
B. Validity check
C. Check digit
D. Existence check

The correct answer is:
C. Check digit
Explanation:
A check digit is a mathematically calculated value that is added to data to ensure that the original data have not been altered. This helps in avoiding transposition and transcription errors. Thus, a check digit can be added to an account number to check for accuracy. Sequence checks ensure that a number follows sequentially and any out of sequence or duplicate control numbers are rejected or noted on an exception report. Validity checks and existence checks match data against predetermined criteria to ensure accuracy.

Area: 3
142. Which of the following types of testing would determine whether a new or modified system can operate in its target environment without adversely impacting other existing systems?
A. Parallel testing
B. Pilot testing
C. Interface/integration testing
D. Sociability testing

The correct answer is:
D. Sociability testing
Explanation:
The purpose of sociability testing is to confirm that a new or modified system can operate in its target environment without adversely impacting existing systems. This should cover the platform that will perform primary application processing and interfaces with other systems, as well as changes to the desktop in a client-server or web development. Parallel testing is the process of feeding data into two systems—the modified system and an alternate system—and comparing the results. In this approach, the old and new systems operate concurrently for a period of time and perform the same processing functions. Pilot testing takes place first at one location and is then extended to other locations. The purpose is to see if the new system operates satisfactorily in one place before implementing it at other locations. Interface/integration testing is a hardware or software test that evaluates the connection of two or more components that pass information from one area to another. The objective is to take unit-tested modules and build an integrated structure.


 

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