Define Function of OSI Layers, Basic Computer Science

OSI Layers: Open Systems Interconnection model is a reference model developed by International Organization for Standardization in 1984, as a conceptual structure of principles for communication in the network across different applications by different vendors
Layer 7:Application Layer
Application layer interface to user processes for communication and data transfer in network. Provides consistent services such as virtual terminal, file and job transfer and operations
Layer 6:Presentation Layer
Masks the differences of data formats between different systems Specifies architecture-independent data transfer format Encodes and decodes data; Encrypts and decrypts data; Compresses and decompresses data
Layer 5:Session Layer
Important function of session layer are :
Dialog controller - Session layer is the dialog controller. it establishes, maintain and synchronizes between communicating system, token management- its also provide token management services
Layer 4:Transport Layer
Manages end-to-end message delivery in network Provides reliable and sequential packet delivery through error recovery and flow control mechanisms Provides connectionless oriented packet delivery
Layer 3:Network Layer
Determines how data are transferred between network devices Routes packets according to unique network device addresses Provides flow and congestion control to prevent network resource depletion
Layer 2:Data Link Layer
data link layer transforms the physical layer, row transmission facilities to a reliable link and its is responsible for node to node deliver also operating the communication links Frames packets Detects and corrects packets transmit errors
Layer 1:Physical Layer
Defines physical means of sending data over network devices. physical layer perform the functions required to transmit a bit stream over a physical medium
Posted Date: 4/22/2012 6:59:53 AM | Location : United States







Related Discussions:- Define Function of OSI Layers, Assignment Help, Ask Question on Define Function of OSI Layers, Get Answer, Expert's Help, Define Function of OSI Layers Discussions

Write discussion on Define Function of OSI Layers
Your posts are moderated
Related Questions
For the formation of a program it is necessary to follow five steps: Design of the algorithm, stage the problem to be solved is reputable and the best solution is proposed, creatin

Use the methods of C4.5 to design a decision tree

A Python identifier is a name used for classify a function, variable, class, module or any other object. An identifier begins with a letter A to Z or a to z or an underscore (_) fo

Below you will find a question the areas of automata. Solve the problem showing all steps. Thoroughly explain how and why you performed each step with complete sentences. A finite

Question 1 Convert the following binary numbers to its specified number system 1101.11 (2) to octal 1111 (2) to decimal 110.11 (2) to hexadecimal 1011.11 (2) to


Question 1 Define Grid computing Question 2 Explain Attribute-Based Programming Model for Grid Services Question 3 What are the characteristics that users/applicat

Brief Define the Phases of Waterfall Model

access,excel and ms word/