According to IIA guidance, which of the following links computers and enables them to -communicate...

Understanding Computer Communication Systems:

Computers communicate with each other using network infrastructure, which allows data transfer, resource sharing, and remote access.

A network connects multiple devices, enabling them to exchange information, access shared resources, and collaborate efficiently.

Why Option D (Networks) Is Correct?

A computer network consists of hardware (routers, switches, and cables) and software (protocols like TCP/IP) that facilitate communication.

Networks can be local (LAN), wide-area (WAN), or cloud-based, providing the backbone for IT operations.

IIA GTAG 11 – Developing the IT Audit Plan emphasizes auditing network security and communication controls.

Why Other Options Are Incorrect?

Option A (Application program code):

Application programs allow users to perform specific tasks but do not link computers for communication.

Option B (Database system):

A database stores and retrieves data, but it does not enable direct communication between computers.

Option C (Operating system):

The operating system manages a single computer’s resources but does not connect multiple computers.

Networks are responsible for linking computers and enabling communication, making option D the correct choice.

IIA GTAG 11 highlights the importance of network infrastructure in IT auditing.

Final Justification:IIA References:

IIA GTAG 11 – Developing the IT Audit Plan

ISO 27001 – IT Network Security Management

NIST SP 800-53 – Network Security Controls