Table of contents: 1. Introduction 1.1 History of the Concept 2. The OSI Reference Model 2.1 OSI Layer 1: The Physical Layer 2.2 OSI Layer 2: The Data Link Layer 2.3 OSI Layer 3: The Network Layer 2.4 OSI Layer 4: The Transport Layer 2.5 OSI Layer 5: The Session Layer 2.6 OSI Layer 6: The Presentation Layer 2.7 OSI Layer 7: The Application Layer 3. Summary of the OSI reference model 4. Sources 1. Introduction Over the past forty years computer networks have dramatically
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OSI Protocol Hierarchy Session Layer The session layer is the fifth among the seven layers of the Open System Interconnections (OSI) model. It resides above the transport layer and below the presentation layer‚ and provides “value added" services to the underlying transport layer services. The session layer (along with the presentation layer) add services to the transport layer that are likely to be of use to applications‚ so that each application doesn ’t have to provide its own implementation
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ATM versus IP for Voice over IP RAKESH KUMAR KAJJAM 11003940 K003940B@staffs.ac.uk ABSTRACT In this paper we mainly discuss about the technologies called asynchronous transfer mode(ATM) and internet protocol(IP).These are the two technologies that are having their own importance in today’s communication world of transmitting the voice and video signals over a network between a source and destination.We are about to see the main differences between these technologies and compare them theoretically
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The main benefits of the OSI model include the following: • Helps users understand the big picture of networking • Helps users understand how hardware and software elements function together • Makes troubleshooting easier by separating networks into manageable pieces • Defines terms that networking professionals can use to compare basic functional relationships on different networks • Helps users understand new technologies as they are developed • Aids in interpreting vendor explanations of product
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Security and the OSI Model Network security is a topic that reaches far beyond the realm of firewalls‚ passwords‚ and user ID accounts. For a network and data to remain secure there must be protective measures at each level in the OSI interconnect model. While each layer basically operates autonomously of the other it is important to ensure that the data being transmitted from the host to destination has not been tampered with or is being prevented from reaching its destination. There are
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Administrator Guide for Avaya Communication Manager 03-300509 Issue 4.0 Release 5.0 January 2008 © 2008 Avaya Inc. All Rights Reserved. Notice While reasonable efforts were made to ensure that the information in this document was complete and accurate at the time of printing‚ Avaya Inc. can assume no liability for any errors. Changes and corrections to the information in this document may be incorporated in future releases. For full legal page information‚ please see the complete document
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OSI Reference Model 1 - OSI Reference Model Network Reference Models A computer network connects two or more devices together to share information and services. Multiple networks connected together form an internetwork. Internetworking present challenges - interoperating between products from different manufacturers requires consistent standards. Network reference models were developed to address these challenges. A network reference model serves as a blueprint‚ detailing how communication
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twisted pair cabling‚ and Wi-Fi are the two most common technologies currently used to build LANs. The increasing demand and use of computers in universities and research labs in the late 1960s generated the need to provide high-speed interconnections between computer systems. A 1970 report from the Lawrence Radiation Laboratory detailing the growth of their "Octopus" network gave a good indication of the situation. Cambridge Ring was developed at Cambridge University in 1974 but was never developed into
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English Composition I TCP Task 2 Charlyn Renfrow Student ID #000367512 Leadership. The word means so many things to so many different people. Where a person grew up‚ what generation they were born into‚ if they were raised going to church‚ if they had a teacher that made an impact on their life and so many different ways of life can define what leadership might be to an individual. A search on Amazon.com for “leadership” generates 113‚754 results in the books section. Searching “influence
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An IP address serves two principal functions: host or network interface identification & location addressing. Its role has been characterized as follows: A name indicates what we seek‚ An address indicates where it is‚ A route indicates how to get there. It encodes a network number (network prefix) and a host number. IP address are either dynamic or static. Our mobile network or broadband has dynamic address. Server has static address. Example: ellington.cs.virginia.edu
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