What are two benefits of using a layered network model? (Choose two.)

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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.

Explanation:

Some vendors have developed their own reference models and protocols. Today, if a device is to communicate on the Internet, the device must use the TCP/IP model. The benefits of using a layered model are as follows:

assists in protocol design
fosters competition between vendors
prevents a technology that functions at one layer from affecting any other layer
provides a common language for describing network functionality
helps in visualizing the interaction between each layer and protocols between each layer

What are two benefits of using a layered network model? (Choose two.)

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