Passed Exam Today IIA-CIA-Part3

Comprehensive and Detailed In-Depth Explanation:

Biometric authentication (e.g., fingerprint, retina scan) is the most difficult to revoke because it is linked to an individual’s physical attributes, which cannot be changed like passwords or physical devices.

Option A (Traditional key lock) – Can be revoked by retrieving the key or changing the lock.

Option C (Card-key system) – Can be revoked by deactivating the card.

Option D (Proximity device) – Can be revoked by disabling the device.

Since biometric data is permanently tied to an individual, revoking access is complex, making Option B the correct answer.

Comprehensive and Detailed In-Depth Explanation:

A management (audit) trail ensures financial transparency by tracking who initiated, approved, and processed transactions within the general ledger (GL).

Option A (Report on data outside system parameters) is a validity control, not an audit trail.

Option C (Comparison of results with input) ensures accuracy but is not a comprehensive audit trail.

Option D (Error-free processing confirmation) does not track user activity.

Since audit trails require tracking transactions by time and individual, Option B is correct.