Two Accurate Statements about the Purpose of the OSI Model | Cisco Exam 200-301

Purpose of the OSI Model: Accurate Statements


Which two statements about the purpose of the OSI model are accurate? (Choose two.)



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A. B. C. D.


The OSI (Open Systems Interconnection) model is a conceptual framework that helps to understand how data is transmitted from one computer to another in a network. The model is composed of seven layers, each with a specific function. Here are the accurate statements about the purpose of the OSI model:

A. Defines the network functions that occur at each layer:

The OSI model defines the functions that occur at each layer, allowing network designers and administrators to understand the roles and responsibilities of each layer. Each layer is responsible for a specific task, such as addressing, routing, or transmission, and communicates with the layer above and below it. Understanding the functions of each layer is crucial for designing, implementing, and troubleshooting networks.

B. Facilitates an understanding of how information travels throughout a network:

The OSI model provides a structured approach to understanding how information travels throughout a network. Each layer contributes to the transmission of data, and the model describes how data is encapsulated and de-encapsulated at each layer. By understanding how data moves through the layers, network administrators can identify and troubleshoot issues that may arise in the network.

C. Changes in one layer do not impact other layers:

This statement is not accurate. Changes in one layer can impact other layers. For example, if a change is made to the physical layer, such as replacing a network cable, it can affect the data link layer and cause issues with data transmission. Additionally, changes in one layer can impact the performance of other layers, making it important to understand how changes will affect the entire network.

D. Ensures reliable data delivery through its layered approach:

This statement is partially accurate. The layered approach of the OSI model does help to ensure reliable data delivery by providing a structured approach to data transmission. Each layer is responsible for a specific task, and errors or issues can be identified and addressed at each layer. However, the reliability of data delivery also depends on factors outside the OSI model, such as network congestion or hardware failures.