No, At each layer, protocols perform servers unique to that layer. While performing those services, the protocols also interact with protocols in the layers directly above and below. In addition, at the top of the OSI model, Application layer protocols interact with the software you use. At the bottom, Phsyical layer services act on the networking cables and connectors to issue and receive signals.
Network Layer
the network layer --> check your question. ^^^^^^^^^^^^^^^^^^^^^^^^^^^ That is totally not the right answer, how about you actually read the book for the course. It is the data link layer that does encapsulation. I agree - its the Data Link Layer which encapsulates the Network layer...NOT the Network Layer.
Network Layer
network session layer Session Layer (Layer 5) The session layer permits two parties to hold ongoing communications called a session across a network.
7 - application
Transport layer and Network layer.
physical & data link layers
Physical Data Link
Networking layer of the OSI model
In the OSI reference model, that would be layer 3 (network).In the OSI reference model, that would be layer 3 (network).In the OSI reference model, that would be layer 3 (network).In the OSI reference model, that would be layer 3 (network).
Router works in Network Layer of OSI model
The Internet model consists of 4 layers: Application layer, Transport layer, Network layer, and Link layer. Each layer is responsible for specific functions in the process of sending data over the Internet.
identifies the network layer protocol makes the connection with the upper layers insulates network layer protocols from changes in physical equipment
Network Layer
insulates network layer protocols from changes in physical equipment makes the connection with the upper layers identifies the source and destination identifies the network layer protocol
TCP operates at Layer 4 which is Transport of the OSI Model!
Layer 3 i.e, network layer of the OSI model is used to IP addressing.