Benefits of Using a Layered Network Model: Modularization, Interoperability, and Flexibility

What are two benefits of using a layered network model? (Choose two.)It assists in protocol design.It speeds up packet delivery.It prevents designers from creating their own model.It prevents technology in one layer from affecting other layers.It ensures a device at one layer can function at the next higher layer.

The two benefits of using a layered network model are:

1. It prevents technology in one layer from affecting other layers: By enforcing strict separation between layers, a layered network model ensures that changes or updates in one layer do not have a direct impact on other layers. This provides modularization and encapsulation, making it easier to modify or upgrade a specific layer without affecting the overall functioning of the network. It also allows for interoperability, as different implementations of the same layer can work together as long as they adhere to the defined interfaces and protocols.

2. It ensures a device at one layer can function at the next higher layer: Each layer in a network model performs specific functions and provides services to the layer above it. This hierarchical approach ensures that devices at a lower layer can communicate and exchange data with devices at the next higher layer. Each layer adds its own set of services to the ones provided by the lower layers, ultimately providing a complete and functional network stack. This abstraction allows network designers to focus on a specific layer’s functionality without worrying about the details of the layers below or above it. It also enables flexibility, as different layers can be replaced or upgraded independently as long as they adhere to the defined interfaces and protocols.

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