OA – 250 Practice Questions with Answers & Rationales
(2026/2027 Update)
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Comprehensive 250-question practice exam for WGU D561 (Information
Systems for Accounting & Control) Objective Assessment. Covers AIS
fundamentals, business processes, internal control, COSO, SOX, IT controls,
security, privacy, auditing, ERP, data analytics, and emerging technologies.
Each question includes four options, correct answer, and detailed rationale to
help you prepare confidently for the D561 OA.
Q1–Q50: AIS Fundamentals, Business Processes, and Documentation
Q1. What is the primary purpose of an Accounting Information System (AIS)?
A. To replace all accounting personnel
B. To collect, process, store, and report financial and some non-financial data
C. To collect, process, store, and report financial and some non-financial data*
D. To prepare only tax returns
Rationale: An AIS supports decision-making by capturing and reporting
accounting information.
Q2. Which of the following is NOT a core component of an AIS?
A. People
,B. Procedures and instructions
C. Data
D. Marketing strategies*
Rationale: Core AIS components include people, procedures, data, software, IT
infrastructure, and internal controls.
Q3. The main goal of integrating AIS with Enterprise Resource Planning (ERP)
systems is to:
A. Eliminate all manual journal entries
B. Share data across functional areas for real-time information*
C. Remove the need for audits
D. Focus only on external reporting
Rationale: ERP integration enables cross-functional data flow and timely
reporting.
Q4. Which document typically initiates the revenue (sales) cycle?
A. Purchase order
B. Receiving report
C. Customer order / sales order*
D. Vendor invoice
Rationale: A customer order triggers the sales process in the revenue cycle.
,Q5. In the expenditure (purchasing) cycle, which document formally requests
goods or services from a vendor?
A. Sales order
B. Purchase order*
C. Receiving report
D. Remittance advice
Rationale: A purchase order is the formal request sent to a supplier.
Q6. Which of the following best describes the purpose of a data dictionary in an
AIS?
A. To store all financial transactions
B. To list employees and their salaries
C. To define data elements, formats, and relationships in the database*
D. To replace the general ledger
Rationale: A data dictionary documents the structure and meaning of data fields.
Q7. A flowchart that shows the flow of documents and data among areas of
responsibility is called a:
A. System flowchart
B. Document flowchart*
C. Program flowchart
D. Process map
Rationale: Document flowcharts track movement of documents through
departments.
, Q8. In a document flowchart, a rectangle typically represents:
A. A decision point
B. Data storage
C. A process or action*
D. A terminator
Rationale: Rectangles denote processes; diamonds are decisions; cylinders are
storage.
Q9. Which of the following is a key advantage of using a relational database in an
AIS?
A. Data redundancy is maximized
B. Data cannot be shared across applications
C. Data can be queried and combined flexibly using keys*
D. Only one user can access data at a time
Rationale: Relational databases allow flexible querying and reduce redundancy.
Q10. The primary risk of data redundancy in an AIS is:
A. Improved data security
B. Faster processing
C. Data inconsistency and update anomalies*
D. Lower storage costs
Rationale: Redundant data can become inconsistent when updated in one place
but not others.