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Which of the following layers is not a part of lower layer or network support layer in OSI model?

Which of the following layers is not a part of lower layer or network support layer in OSI model? Correct Answer Session

The correct answer is option 4.

Concept:

The session layer is not a part of the lower layer or network support layer in the Open System Interconnection model.

The International Organization for Standardization (ISO) developed the open systems interconnection (OSI) paradigm, which allows various communication systems to communicate using standard protocols. The OSI Model may be thought of as a universal computer networking language. It consists of seven layers. 

Layer Layer no Use
APPLICATION LAYER 7 The human-computer interaction layer, via which applications can access network services.
PRESENTATION LAYER 6 This is where data encryption takes place and ensures that data is in a useable format.
SESSION LAYER 5 Maintains connections and is in charge of port and session control.
TRANSPORT LAYER 4 Data is sent via protocols such as TCP and UDP.
NETWORK LAYER 3 Determines the physical path that the data will travel.
DATALINK LAYER 2 Defines the data format on the network.
PHYSICAL LAYER 1 Raw bitstream is sent across the physical media.


Physical, Datalink and Network layers are a part of the lower layer or network support layer in the OSI model. And these three layers are there in subnet and Transport Layer, Session Layer, Presentation Layer, and Application Layer are there in the host. 

Hence the correct answer is the session layer.

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