What is the name of the reference model for network communication with seven layers?

• A. Transmission Control Protocol (TCP) Model
• B. Open Systems Interconnection (OSI) Model
• C. Internet Protocol Suite
• D. Network Communication Framework

Answer: (B)

The reference model for network communication that is widely recognized for its seven layers is the Open Systems Interconnection (OSI) Model. It provides a framework for understanding how different networking protocols interact, as well as the various functions that occur at each layer during data transmission.

The OSI Model is structured into seven distinct layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application. Each layer serves a specific purpose and communicates with the layers directly above and below it. This model helps in standardizing networking protocols, facilitating interoperability between different systems and networks.

Understanding the OSI Model is essential for networking professionals as it guides the design and troubleshooting of networks, making it easier to identify where issues may occur in the communication process. This model also plays a crucial role in teaching fundamental networking concepts, thereby laying the groundwork for learning about more complex network protocols and architectures.