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OSI model
- 1. Sirifort Institute ofManagement Studies OSI Model Submitted To: Submitted By: Mr. Vijay Yadav (Asstt.Prof. BCA Dept.) Prachi Arora (BCA 2nd Year, Evening) (02224302017,40324302017)
- 3. International StandardOrganization(ISO) established a committee in 1947 to develop an architecture for systems communication Open System Interconnection(OSI) reference model is the result of this effort. This model allows any two different systems to communicate regardless of their underlying architecture.
- 4. The OSImodel describes how data flows from one computer, through a network to another computer. The OSI model is not a protocol; it is a model for understanding and designing a network architecture that is flexible and robust. The OSI model consists of seven separate but related layers, each of which defines a part of the process of moving information across a network.
- 6. Physical layeris the bottom(layer 1) of OSI Model. It is responsible for the actual physical connection between the devices. This Layer is responsible for the movements of individual bits from one node to next.
- 8. Convert bitsto signals Bit Synchronization Bit Rate control Line configuration Physical topology Transmission mode
- 9. The data linklayer is responsible for moving frames from one node to the next.
- 10. Framing PhysicalAddressing Flow Control Error Control
- 12. It isresponsible for the source to destination delivery of a packets across multiple networks. Routing Logical Addressing
- 13. It isresponsible for the source process to destination process delivery of entire message. Two types of Transport layers Connection Oriented Transmission Connectionless Transmission
- 15. Segmentation andReassembly Service point addressing Error Control Flow Control
- 16. Session Layer... It isresponsible for beginning, maintaining and ending the communication between two devices
- 17. Establishment, maintainingand ending session Dialog Control Synchronization
- 18. Presentation Layer... This layeris concerned with the syntax and semantics of the information exchanged between two systems.
- 19.
- 20. Provides UserInterfaces and support for services like e- mail, file transfer.
- 21. Functions of Application Layer NetworkVirtual Terminal File Transfer Access and Management Mail Services Directory Services