Today I will compare and explain each layer of the OSI and TCP/IP models. I will first talk about the OSI model. The OSI model (Open Systems Interconnection Model) has 7 layers ranging from the physical layer to the application layer. The first layer, the physical layer, involves the movement of data across a network. This layer will also allow hardware to send and receive data through a network operator (e.g. three, EE). A device that connects to this layer will be a hub. The second layer, the data link layer, involves creating links across the network. This action involves collecting information and sending data in the form of frames. The design on this layer would include bridges and switches. Layer three is the network layer, this layer is used to create the addresses and the route through which the data should travel. This then ensures that the data is sent to the right place. An example of this layer would be IP addresses. On this layer, the device that will be connected is the router. Say no to plagiarism. Get a tailor-made essay on “Why Violent Video Games Should Not Be Banned”? Get the original essay The next layer, the transport layer, is designed to handle the data packets being sent and then make sure they are delivered to the right location. This layer will also check for any damaged data that may occur during transport. The fifth layer, which is the session layer, has the task of managing conversations. This will involve starting and ending conversations. This also includes connecting and even reconnecting after the connection is lost or interrupted. The sixth layer, the presentation layer, is most often part of the operating system. Its role is to convert incoming and outgoing data on the network into a readable format. The final layer of the OSI model is the Application layer. This layer is used to identify partners and allows sent data to be opened and displayed to the user. The devices that would connect to this layer would be PCs, servers, phones as well as hosts. The TCP/IP (Transmission control protocol/internet protocols) model only has 4 layers from network access to the Applications layer. The TCP/IP model is built into every computer and is necessary to access the Internet. The bottom layer, which is the network access layer, contains the details of how information is sent through the network. For example, how data bits are sent, this layer also takes care of hardware devices such as optical fiber or Ethernet wires. The next layer is the IP layer, this layer is used to convert the data sent into IP datagrams, which will then allow the data to be sent across the network. The next layer is the TCP layer. This layer is intended to allow devices to connect, host conversations, and share data over the network. The final layer, the application layer, sits at the top of the model and this layer is designed to define the TCP/IP protocols and also determines how each program running on the network is hosted. An example of this could be DNS (domain naming system). Next, I'll talk about the differences between each model and explain why some layers are missing in the TCP/IP layer. I will first talk about the missing layers on the TCP/IP model. There is no shortage of missing layers but they are combined into one layer, the presentation layer and the session layer of the OSI model have been combined to create the application layer. This is also the case for data binding and.