Which of the following is not a standard technique that the chief audit executive (CAE) would use to provide evidence of supervisory review of working papers?

An accounts receivable clerk receives cash payments, posts the payments to customer accounts, and prepares the daily cash deposit.
The clerk has been stealing some cash and manipulating the customer payments to hide the theft.
This fraud could be detected with which of the following controls?

An internal auditor is conducting an engagement in the accounts payable department, which includes expressing an opinion at the micro level. According to IIA guidance, which of the following statements is true regarding micro-level opinions?
1. They are most effective when using a combination of current and prior engagement findings to draw conclusions.
2. They typically are based on defined procedures such as those found in an accounts payable reconciliation process.
3. They are discrete and not normally shared with senior management or the board.
4. They can rely on evidence taken from the work of other assurance activities across the organization.

An internal auditor who is carrying out an engagement to review controls related to corporate tax reporting must possess which of the following competencies?
1. Proficiency in analyzing key IT risks and controls.
2. The ability to recognize significant deviations from good business practices.
3. Knowledge of key indicators of fraud in tax reporting.
4. The ability to recognize the existence of problems related to tax accounting.

Which of the following scenarios best illustrates the principle of due professional care?