Top 10 AUD Exam Practice Questions (with Explanations)

Top 10 AUD Exam Practice Questions | Master Opinions, Controls & Procedures

Use these high-yield AUD questions to sharpen your audit logic, improve your judgment, and build confidence for exam day.

AUD Series • Last updated: March 2026 • Reviewed by Kyle Lee Ashcraft, CPA

AUD is different from FAR and REG. It is less about heavy calculations and more about understanding why an auditor performs a procedure, which assertion is being tested, and what opinion is appropriate based on the facts.

In this guide, you will work through 10 high-yield AUD questions covering some of the most tested areas on the exam, including audit opinions, scope limitations, segregation of duties, control risk, and SOC reports.

How to use this article: First, try each question on your own. Then read the explanation carefully and focus on the reasoning pattern behind the answer. That is what helps AUD concepts become second nature.

This guide is especially helpful if:

• You keep getting stuck between two answer choices on conceptual AUD questions.
• You want to understand the logic behind assertions, opinions, and internal controls.
• You need better explanations for why one answer is right and the others are wrong.

Interactive AUD Quiz App

Want to solve the questions first before reading the explanations? Use the interactive quiz below, then come back to this guide to review the reasoning step by step.

Video: Complete 10-Question Walkthrough

Prefer a guided explanation? Watch me solve all 10 AUD questions step by step and explain the exact thought process I would use on the real exam.

Jump to a Question:

• Question 1: Audit Opinion Selection
• Question 2: Inventory Observation
• Question 3: Audit Procedures & Objectives
• Question 4: Testing Controls for Completeness
• Question 5: Searching for Unrecorded Liabilities
• Question 6: Internal Controls Over Payroll
• Question 7: Control Risk Assessment
• Question 8: Control Risk Adjustment
• Question 9: SOC Reports
• Question 10: Segregation of Duties

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Question 1: Audit Opinion Selection Difficulty: 4/5

Core skill tested: Distinguishing a qualified opinion from a disclaimer when there is a scope limitation.

During an audit of Lavender Ltd., the auditor finds that the accounting records for a substantial portion of sales transactions are inadequate, preventing the acquisition of sufficient appropriate audit evidence for these transactions. Faced with this situation, the auditor would most likely choose between issuing a(an):

A: Qualified opinion and an unmodified opinion with an emphasis-of-matter paragraph.

B: Unmodified opinion with an emphasis-of-matter paragraph and an adverse opinion.

C: Adverse opinion and a disclaimer of opinion.

D: Disclaimer of opinion and a qualified opinion. (Correct)

Explanation: This is a scope limitation, not a GAAP departure. The auditor is missing sufficient appropriate audit evidence.

• If the possible effects are material but not pervasive, the auditor issues a qualified opinion.
• If the possible effects are material and pervasive, the auditor issues a disclaimer of opinion.

That is why the correct pair is disclaimer and qualified.

Common trap: An adverse opinion is for a material GAAP departure, not for missing evidence caused by a scope limitation.

Question 2: Inventory Observation Difficulty: 3/5

Core skill tested: Knowing when alternative procedures are enough to support an unmodified opinion.

An auditor was hired to audit the financial statements of Maple Inc. for the fiscal year ending December 31, 2024. However, the auditor could not attend the year-end inventory count due to timing issues. The inventory is a material aspect of Maple Inc.'s financial statements. Despite this, the auditor successfully performed alternative audit procedures and obtained sufficient appropriate audit evidence regarding the inventory balances. In this situation, what type of audit opinion should the auditor consider issuing?

A: Unqualified opinion, as the auditor obtained sufficient appropriate evidence through alternative procedures. (Correct)

B: Qualified opinion, due to the inability to observe the year-end inventory count.

C: Adverse opinion, because the inventory count is a critical part of the audit.

D: Disclaimer of opinion, as the audit was not comprehensive in scope.

Explanation: Missing the physical inventory observation does not automatically require a modified opinion. If the auditor can use alternative procedures and still obtain sufficient appropriate audit evidence, an unmodified opinion is appropriate.

Study tip: In AUD, always ask: Did the auditor ultimately get sufficient appropriate evidence? If yes, that often points back to an unmodified opinion.

Question 3: Audit Procedures & Objectives Difficulty: 2/5

Core skill tested: Connecting direction of testing to the correct assertion.

During an audit of Henderson Corporation, the auditor performs a procedure where they trace several bills of lading to corresponding sales invoices. What audit objective is primarily being addressed by this procedure?

A: Ensuring that all goods dispatched have been recorded as sales.

B: Verifying that all recorded sales are supported by shipment documents.

C: Confirming that shipments to customers were invoiced. (Correct)

D: Checking the accuracy of inventory count and valuation.

Explanation: Bills of lading are shipping documents. When you trace from a shipping document forward to the related sales invoice, you are testing whether shipments were actually invoiced and recorded.

This is fundamentally a completeness direction of testing: starting with what happened in real life and making sure it made it into the accounting records.

Common trap: If the question went the other direction—from sales invoice back to bill of lading—you would be thinking more about existence/occurrence.

Question 4: Testing Controls for Completeness Difficulty: 3/5

Core skill tested: Identifying a control designed to prevent omitted sales transactions.

Which of the following audit procedures would an auditor most likely perform to test controls related to management's assertion of the completeness of sales transactions?

A: Examine a sample of shipping documents and trace them to the purchase order.

B: Review a selection of sales invoices and compare them to the shipping log.

C: Analyze a report detailing prenumbered sales invoices and investigate any sequences of missing invoices. (Correct)

D: Assess the consistency of sales invoice processing by checking for proper authorization.

Explanation: Prenumbered documents are a classic control for completeness. If invoices are sequentially numbered, missing numbers can signal that a transaction occurred but never got recorded properly.

Investigating gaps in the invoice sequence directly tests whether the control is helping ensure all sales are captured.

Question 5: Searching for Unrecorded Liabilities Difficulty: 3/5

Core skill tested: Testing accounts payable completeness at year-end.

A critical part of the year-end audit is testing for unrecorded liabilities—obligations that the company has incurred but failed to record in the accounting records.

In the process of searching for unrecorded liabilities at the year-end, which of the following would an auditor most likely examine?

A: Receiving reports for items received before year-end but not yet recorded as liabilities. (Correct)

B: Cutoff bank statements for checks issued just after year-end.

C: Invoices received and recorded in the subsequent period.

D: Correspondence with legal counsel regarding potential lawsuits.

Explanation: A liability is usually created when goods are received, not when the invoice is paid. That is why receiving reports are such an important source document when testing for unrecorded liabilities.

If goods were received before year-end but no payable was recorded, liabilities are understated.

Study tip: For AP completeness, think: receiving report first, then ask whether the liability was recorded.

Question 6: Internal Controls Over Payroll Difficulty: 2/5

Core skill tested: Spotting a segregation of duties problem in payroll.

Which of the following scenarios most likely represents a weakness in an entity's internal controls over its payroll process?

A: Unclaimed payroll checks are stored in a secure location by the treasurer.

B: The payroll department sends prepared checks directly to the treasurer for signing.

C: Human resources informs payroll about terminations, but there is no cross-verification process.

D: The employee who distributes payroll checks is also responsible for updating payroll records, including hours worked and rates of pay. (Correct)

Explanation: This combines custody and record-keeping in one person. That creates an obvious fraud opportunity.

That employee could inflate hours, change pay rates, create a ghost employee, distribute the checks, and then hide the fraud in the records.

Golden rule: In segregation of duties questions, try to keep authorization, custody, record-keeping, and reconciliation separate.

Question 7: Control Risk Assessment Difficulty: 3/5

Core skill tested: Understanding what it means to assess control risk too low.

During an audit, if an auditor erroneously assesses the control risk as too low, what is the most likely reason for this incorrect assessment?

A: The auditor overestimates the operating effectiveness of the client's control activity based on the sample results. (Correct)

B: The auditor underestimates the operating effectiveness of the client's control activity.

C: The auditor incorrectly assumes that the control activity is not relevant.

D: The auditor incorrectly anticipates that the control activity will significantly reduce the necessity for substantive testing.

Explanation: If control risk is assessed too low, the auditor is placing too much reliance on the client's internal controls. That usually happens because the auditor overestimates how effective those controls are.

This often comes from sampling error or an overly favorable interpretation of the test-of-controls results.

Question 8: Control Risk Adjustment Difficulty: 3/5

Core skill tested: Applying the audit risk model when controls are weaker than expected.

An auditor, during the course of an audit, finds that certain key control activities are not functioning as expected and therefore increases the assessed level of control risk. As a result of this assessment, which of the following would the auditor most likely increase?

A: Extent of tests of details. (Correct)

B: Level of detection risk.

C: Level of inherent risk.

D: Extent of tests of controls.

Explanation: If control risk goes up, the auditor must reduce detection risk in order to keep overall audit risk at an acceptable level.

The main practical way to reduce detection risk is to do more substantive testing, including increasing the extent of tests of details.

Simple memory trick: If you trust controls less, you have to trust your own audit work more—so you do more substantive work.

Question 9: SOC Reports for Service Organizations Difficulty: 4/5

Core skill tested: Matching the right SOC report to the user's needs.

A publicly-traded company requests an external audit of its technology service provider's system to gain assurance about the effectiveness of its controls related to financial reporting. Which of the following reports should the auditor provide to satisfy the client's needs, especially regarding the suitability of the design and operating effectiveness of the controls over financial reporting?

A: SOC 1 Type 1 report

B: SOC 2 Type 1 report

C: SOC 1 Type 2 report (Correct)

D: SOC 2 Type 2 report

Explanation: This question has two steps:

• SOC 1 is for controls relevant to financial reporting.
• Type 2 is needed when the user wants assurance about operating effectiveness over time.

That makes SOC 1 Type 2 the correct answer.

Common trap: SOC 2 sounds more “tech-focused,” but it is about security, availability, confidentiality, privacy, and related trust services criteria—not financial reporting.

Question 10: Segregation of Duties Difficulty: 2/5

Core skill tested: Recognizing a properly separated authorization and record-keeping structure.

Which of the following scenarios demonstrates an effective segregation of duties in a company's internal controls?

A: The cashier who handles cash receipts also reconciles the cash ledger at the end of the day.

B: An accounts payable clerk prepares checks but does not have the authority to sign them. (Correct)

C: The inventory manager is responsible for both ordering inventory and receiving goods.

D: A salesperson records their own sales transactions and adjusts customer account balances.

Explanation: Option B properly separates preparation/record-keeping from authorization. The AP clerk can prepare the checks, but someone else must approve and sign them.

That makes it much harder for one person to create and authorize a fraudulent disbursement.

Frequently Asked Questions (AUD Exam Prep)

What is the difference between a SOC 1 and SOC 2 report?

A SOC 1 report focuses on controls at a service organization that are relevant to the user entity’s financial reporting. A SOC 2 report focuses on controls related to security, availability, processing integrity, confidentiality, and privacy.

Why is segregation of duties so important in payroll?

Payroll involves cash disbursements and employee records. If one person can both update payroll data and distribute checks, they may be able to create ghost employees, inflate hours, or increase pay rates and then steal the excess cash.

How does assessing control risk too low affect the audit?

If control risk is assessed too low, the auditor relies too heavily on the client’s controls and may perform too little substantive testing. That increases the chance of failing to detect a material misstatement.

What is the easiest way to think about completeness vs. existence?

For completeness, start with what happened in real life and make sure it got recorded. For existence, start with what is recorded and make sure it actually happened.

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