The OSI model is the most common networking model used in the industry. Applications, network

functions, and protocols are typically referenced using one or more of the seven OSI layers. Of the
following, choose the two best statements that describe the OSI layer functions. Each correct
answer represents a complete solution. Choose two.

A.
Layers 1 and 2 deal with application functionality and data formatting. These layers reside at
the top of the model.

B.
Layers 4 through 7 define the functionality of IP Addressing, Physical Standards, and Data Link
protocols.

C.
Layers 5, 6, and 7 focus on the Network Application, which includes data formatting and
session control.

D.
Layers 1, 2, 3, and 4 deal with physical connectivity, encapsulation, IP Addressing, and Error
Recovery. These layers define the end-to-end functions of data delivery.