Pass the IIA CIA IIA-CIA-Part3 Questions and answers with CertsForce

Comprehensive and Detailed In-Depth Explanation:

Big data is commonly characterized by the "Three Vs":

Volume: The vast amount of data generated and collected.

Velocity: The speed at which new data is generated and the pace at which data moves.

Variety: The diverse types and sources of data, including structured, semi-structured, and unstructured formats.

These characteristics highlight the challenges and considerations in managing and analyzing big data. Options A, C, and D list attributes that, while relevant in certain contexts, do not encapsulate the core defining features of big data as effectively as option B.

Comprehensive and Detailed In-Depth Explanation:

Under the variable costing method, only costs that vary directly with production volume are treated as product costs. This includes direct labor costs (the wages of employees directly involved in manufacturing) and manufacturing supplies (materials consumed during production). Insurance on a factory is a fixed overhead cost, and packaging and shipping costs are typically considered period costs or selling expenses, as they are incurred after production. Therefore, options 1 and 3 correctly represent product costs under variable costing.

Comprehensive and Detailed In-Depth Explanation:

Physical and environmental IT controls focus on securing IT infrastructure against unauthorized access and environmental hazards. Locating servers in locked rooms with restricted admission protects hardware from theft, tampering, and environmental risks.

Option B (Applying encryption) – A logical security control, not a physical one.

Option C (Access rights allocation) – A logical control related to identity management.

Option D (Software patch control) – Part of IT governance and system maintenance, not physical security.

Since physical access control is a critical component of IT security, Option A is correct.

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:

Authentication ensures that only authorized users can access a system by requiring credentials such as PINs, passwords, or biometrics.

Option A (Remote wipe) – Deletes data but does not control initial access.

Option B (Software encryption) – Protects stored data, not user access.

Option C (Device encryption) – Secures the device, but authentication controls access.

Since authentication ensures secure user verification, Option D is correct.

Comprehensive and Detailed In-Depth Explanation:

The Three Lines of Defense Model classifies risk management roles as follows:

First Line of Defense: Operational management responsible for risk controls (e.g., blocking unauthorized traffic, encrypting data).

Second Line of Defense: Risk management and compliance functions that monitor and assess the effectiveness of first-line controls (e.g., reviewing disaster recovery test results).

Third Line of Defense: Independent audit functions providing assurance (e.g., conducting security assessments).

Option C (Reviewing disaster recovery test results) aligns with the second line of defense because it involves oversight and evaluation of IT controls rather than direct execution.

Comprehensive and Detailed In-Depth Explanation:

Authentication methods are categorized into three factors:

Something you know (e.g., passwords, PINs).

Something you have (e.g., ID cards, key fobs, smart cards).

Something you are (e.g., biometrics like fingerprints, retina scans).

Option C (A card-key scanner) aligns with "something you have", as it requires a physical token (card) for authentication.

Option A (Retina scan) and Option D (Fingerprint scanner) fall under biometric authentication ("something you are").

Option B (PIN code reader) is based on "something you know".

Thus, C is the correct answer because a card-key represents a physical access control mechanism based on possession.