In Polling I/O, the Main Inefficiency Comes from

question 23

Multiple Choice

In polling I/O, the main inefficiency comes from

• A) the hardware controller when it notifies the CPU that the device is ready for service.
• B) the basic polling operation that may be comprised of several CPU instructions.
• C) polling when it is attempted repeatedly yet rarely finds a device ready for service.
• D) the slow data transfer rate between a device and the host.

---

Definitions:

Low-Income Nations

Countries with a low standard of living, often measured by economic indicators such as gross domestic product (GDP) per capita, and lacking in basic human needs infrastructure.

Wealthy Nations

Countries characterized by a high level of economic wealth, typically measured by gross domestic product per capita or similar metrics.

Economic Development

The method through which a nation, region, or local community enhances its economic prosperity and life quality, aiming to meet specific goals and objectives.

Social Development

Refers to the process by which individuals and societies improve well-being, often through evolving social structures, policies, and norms.