Comparison and Contrast between the OSI and TCP/IP Model



Introduction



This presentation would discuss some comparison and contrast between the 2 main reference models which uses the concept of protocol layering.

Open System Interconnection Model (OSI)
Transport Control Protocol /Internet Protocol (TCP/IP)

The Session Layer

The Session layer permits two parties to hold ongoing communications called a session across a network.
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ATM makes B-ISDN a reality. The Integrated services Digital Network (ISDN) evolved during the 80 s. It carried a basic channel that could operate at 64kbps (B-channel) and combinations of this and others (D-channels) formed the basis of communication on the network. In the new B-ISDN world, this is supposed to supply data, voice and other communication services over a common network with a wide range of data speeds. To understand a lot of the terminology in ATM-land, it is necessary to understand the B-ISDN Reference Model. Just as the ISO seve ....etc

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ATM makes B-ISDN a reality. The Integrated services Digital Network (ISDN) evolved during the 80's. It carried a basic channel that could operate at 64kbps (B-channel) and combinations of this and others (D-channels) formed the basis of communication on the network. In the new B-ISDN world, this is supposed to supply data, voice and other communication services over a common network with a wide range of data speeds. To understand a lot of the terminology in ATM-land, it is necessary to understand the B-ISDN Reference Model. Just as the ISO seve ....etc

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Deepak Raut
Project Guided By : Bhavna madam

OSI REFERENCE MODEL

1. Physical Layer

a) Convert the logical 1’s and 0’s coming from layer 2 into electrical signals.

b) Transmission of the electrical signals over a communication channel.

Main topics:

Transmission mediums
Encoding
Modulation
RS232 and RS422 standards
Repeaters
Hubs (multi-port repeater)


2. Data Link Layer

a) Error control to compensate for the imperfectio ....etc

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Introduction

-Although the protocols associated with the OSI model are rarely used any more ,the model itself is quite general and still valid

-The TCP/IP model has the opposite property :the model itself is not of much use but the protocol are widely used .

-For this reason we look both them detail
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USB EXPLAINED: AN INTRODUCTION TO USB AND ITS FUTURE


USB HISTORY
The Universal Serial Bus (USB) was introduced to the world of PC computing to solve the growing problem of how
to connect peripherals to a PC. The world of desktop computers needed a way, not only to physically connect
devices, but also allow them to be identified and categorized to enable a simple ease of use and method of discovery.
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