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.
Explanation:
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. Layers 5, 6, and 7 focus on the Network Application, which includes data
formatting and session control.
Answer option A is incorrect. Layers 1 and 2 deal with Physical Connectivity and Data Link functions.
Answer option B is incorrect. Layers 4 through 7 are upper OSI model layers and deal with functions
of application, presentation, session, and
transport.