IIA Updated IIA-CIA-Part3 Exam Questions and Answers by kenny

A relevant cost is a future cost that differs among decision alternatives. It matters because it can influence the decision being made. Costs that are the same under all alternatives are irrelevant because they do not change the outcome. Past costs are sunk costs and should not affect current decisions because they cannot be changed, even if they differ historically. For example, in a make-or-buy decision, avoidable future production costs are relevant, while already-incurred equipment costs are usually not. Internal auditors reviewing management decisions should determine whether analyses improperly include sunk costs or exclude avoidable future costs. Option A is incorrect because a future cost that is the same among alternatives is irrelevant. Options C and D are incorrect because past costs are not relevant to future decisions. Therefore, Option B is correct.

Authentication control is a security measure used to verify the identity of users before granting access to systems or data. Authentication methods ensure that only authorized individuals can access resources.

Why Option C (Users have to validate their identity with a smart card) is Correct:

Authentication is the process of verifying a user’s identity before granting access.

Smart card authentication is a strong authentication method because it requires a physical device (smart card) and a PIN or biometric verification.

This falls under multi-factor authentication (MFA), enhancing security by combining something the user has (smart card) with something they know (PIN).

Why Other Options Are Incorrect:

Option A (Identity requests are approved in two steps):

Incorrect because this refers to identity approval (authorization), not authentication.

Option B (Logs are checked for misaligned identities and access rights):

Incorrect because log monitoring is a detective control, not an authentication control.

Option D (Functions can be performed based on access rights):

Incorrect because this describes authorization (determining what a user can do after authentication).

IIA GTAG – " Auditing Identity and Access Management " : Covers authentication methods like smart cards and multi-factor authentication.

COBIT 2019 – DSS05 (Manage Security Services): Recommends strong authentication controls, including smart card validation.

NIST Cybersecurity Framework – " Access Control Guidelines " : Highlights authentication best practices, including smart card use.

IIA References:

The most effective way to prevent the unauthorized disclosure of confidential information is to limit access based on employee roles and duties. This follows the principle of least privilege (PoLP), ensuring that employees only access the data necessary for their job functions.

(A) Nondisclosure agreements between the firm and its employees. ❌

Incorrect. While NDAs help deter leaks, they do not prevent unauthorized access to information. An employee who signs an NDA can still access and leak data.

(B) Logs of user activity within the information system. ❌

Incorrect. Activity logs help detect and investigate breaches but do not actively prevent unauthorized disclosure.

(C) Two-factor authentication for access into the information system. ❌

Incorrect. While two-factor authentication enhances system security, it does not prevent employees with authorized access from leaking confidential data.

(D) Limited access to information, based on employee duties. ✅

Correct. Role-based access control (RBAC) ensures that employees only access the information necessary for their job responsibilities, reducing the risk of leaks.

IIA GTAG " Identity and Access Management " highlights restricted access as the most effective control for preventing unauthorized disclosure of confidential data.

IIA GTAG – " Identity and Access Management "

IIA Standard 2120 – Risk Management (Data Protection Controls)

COBIT Framework – Information Security and Access Control

Analysis of Answer Choices:IIA References:Thus, the correct answer is D (Limited access to information, based on employee duties), as restricting access is the most effective preventive control against data disclosure.

The CAE must prioritize engagements based on risk assessment. A risk matrix (considering likelihood and impact of risks) provides the starting point to evaluate which areas of the audit universe present the highest exposure and should be included in the plan.

Option A (maturity model) helps evaluate risk management capability but is not the starting point. Option C (assurance map) supports coordination but follows the risk assessment. Option D (control framework) provides criteria but not prioritization.