OSI model
- 1. Sirifort Institute of Management Studies OSI Model Submitted To: Submitted By: Mr. Vijay Yadav (Asstt.Prof. BCA Dept.) Prachi Arora (BCA 2nd Year, Evening) (02224302017,40324302017)
- 3. International Standard Organization(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 OSI model 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 layer is 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 bits to signals Bit Synchronization Bit Rate control Line configuration Physical topology Transmission mode
- 9. The data link layer is responsible for moving frames from one node to the next.
- 10. Framing Physical Addressing Flow Control Error Control
- 12. It is responsible for the source to destination delivery of a packets across multiple networks. Routing Logical Addressing
- 13. It is responsible for the source process to destination process delivery of entire message. Two types of Transport layers Connection Oriented Transmission Connectionless Transmission
- 15. Segmentation and Reassembly Service point addressing Error Control Flow Control
- 16. Session Layer... It is responsible for beginning, maintaining and ending the communication between two devices
- 17. Establishment, maintaining and ending session Dialog Control Synchronization
- 18. Presentation Layer... This layer is concerned with the syntax and semantics of the information exchanged between two systems.
- 20. Provides User Interfaces and support for services like e- mail, file transfer.
- 21. Functions of Application Layer Network Virtual Terminal File Transfer Access and Management Mail Services Directory Services