AVIXA Recognized AV Technologist Test

Which model assists with conforming network communications to ISO standards?

1. Internet Protocol

2. CDM

3. OSI

4. Network interface

The correct answer is: OSI

The OSI model, which stands for Open Systems Interconnection, is a framework that assists in conforming network communications to ISO (International Organization for Standardization) standards. It provides a systematic approach to understanding and implementing network communications through seven distinct layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application. Each layer serves a specific function and relies on the layers below it to facilitate effective communication between devices. By defining these layers and the protocols that operate within them, the OSI model helps ensure interoperability among diverse networking systems and technologies. This has been instrumental in establishing standardized communication protocols across various IT and networking equipment, which improves compatibility and integration efforts among different manufacturers and services. In contrast, other choices do not serve as a formal model for networking communications aligned to ISO standards. For instance, Internet Protocol is primarily concerned with packet forwarding and addressing, while CDM (Configuration Management Database) is related to IT service management. The term "Network interface" refers to the hardware or software that connects a computer to a network, and it does not pertain to a broad framework for establishing communication standards like the OSI model does.