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bpsharma.in/eLearning/Networking/OSI_Reference_Model.htm

This module introduces you to the 7 layers of OSI model and explains how data is encapsulated for data transmission.

After reading this module, you will be able to:

  • Identify reasons why the networking industry uses a layered network model.
  • Name the layers of the OSI model and give their relative position in the stack.
  • Identify the functions of each layer of the OSI reference model.
  • Characterize the differences between data communicated by the lower layers and by the upper layers.
  • Define and explain the steps of data encapsulation and decapsulation.
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Q: Why are network standards divided into layers?
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