A summary of the controls for the acquisition cycle of Keystone Computers & Networks, Inc., appears on pages 594€“595.
a. For the following three controls over the acquisition cycle, indicate one type of error or fraud that the control serves to prevent or detect. Organize your solution as follows:

b. For each of the controls described above, indicate how the auditors could test the control.
Organize your answer asfollows:

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Control Tests of Controls 1. Computer matches information from vendors' invoice with purchase order and receiving data. 2. The computer assigns numbers to receiving reports 3. Checks are mailed by check signer.