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2. http2 - In which layer is HTTP in the OSI model? - Stack Overflow

   stackoverflow.com/questions/38596488

   HTTP is in the Application layer of the Internet protocol suite model and in the Session Layer of the OSI Model. The Session layer of the OSI Model is responsible for creating and managing sessions and is the first layer that passes data. HTTP can redirect sessions, reuse them and have persistent connections. answered Aug 5, 2021 at 18:39.

3. network programming - OSI Layers explained - Stack Overflow

   stackoverflow.com/questions/41986458

   Physical layer (in original OSI model) is just your cables and network equipment. Pretty much the only people who still talk about OSI is network techs. They may still say Layer 2 or Layer 3 switches, etc which is in reference to OSI.. Layer 2 is an ethernet switch, a layer 3 switch adds routing.

4. Are we using TCP/IP or OSI in internet? - Stack Overflow

   stackoverflow.com/questions/9329105

   OSI is just a theoretical model, it has never been implemented 1:1 in a real world scenario. TCP/IP is an "implementation" of the OSI model. The OSI model was developed by researchers. It only exists on paper. Afterwards TCP/IP was created by using the principles that were described in the OSI model.

5. ip - Definition of Network Units: Fragment, Segment, Packet,...

   stackoverflow.com/questions/11636405

   Frame:Similar to a Packet, frames are small parts of a message in the network. a frame is the unit of data used in the OSI model’s data link layer. Datagram:The datagram represents a data unit of transfer in networking. Data transmitted in a network is divided into smaller parts called datagrams. Transport layer.

6. Serial Protocols and the OSI Model - Stack Overflow

   stackoverflow.com/questions/43574872

   serial protocol in the osi model. In this web page a found this explanation: "In the International Organization for Standardization Open Systems Interconnection (ISO/OSI) model for network communication, serial communications operates between the physical layer and the application layer. The RS–232–C standard describes the physical layer.

7. OSI model - What's the presentation and session layer for?

   stackoverflow.com/questions/152889

   The session layer is meant to store states between two connections, like what we use cookies for when working with web programming. The presentation layer is meant to convert between different formats. This was simpler when the only format that was worried about was character encoding, ie ASCII and EBCDIC. When you consider all of the different ...

8. TCP port and OSI model - Stack Overflow

   stackoverflow.com/questions/52775730

   TCP or UDP ports are defined in either layer 4 of the OSI model or layer 3 of the TCP/IP model, both are defined as the 'transport' layer. OSI layer 5 'session layer' uses the ports defined in layer 4 to create sockets and sessions between communicating devices/programs/etc. Reminder about OSI model: It is a conceptual model.

9. At what layer in the protocol stack does DNS happen?

   stackoverflow.com/questions/21654632

   13. In OSI stack terms, DNS runs in parallel to HTTP in the Application Layer (layer 7). DNS is in effect an application that is invoked to help out the HTTP application, and therefore does not sit "below" HTTP in the OSI stack. DNS itself also makes use of UDP and more rarely TCP, both of which in turn use IP. answered Feb 11, 2014 at 12:00.

10. Classifying USB Protocol in the OSI Model - Stack Overflow

    stackoverflow.com/questions/61302045

    The Physical layer includes specifications for things such as connectors, cables, power, and shielding. The logical functions of USB protocols do not map perfectly onto the OSI model. Some protocols span two or three layers of the OSI model. But, it's possible to see which parts of which protocols fit in which layers.

11. Difference between PACKETS and FRAMES - Stack Overflow

    stackoverflow.com/questions/31446777

    A packet is a general term for a formatted unit of data carried by a network. It is not necessarily connected to a specific OSI model layer. For example, in the Ethernet protocol on the physical layer (layer 1), the unit of data is called an "Ethernet packet", which has an Ethernet frame (layer 2) as its payload. But the unit of data of the ...