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ASU Open Course SystemASU Open Course System
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Networks (1) 1304230Networks (1) 1304230 Dr. Shadi R. Masadeh
Email: [email protected] – Ext. 1428
CNS Department
Faculty of Information Technology (FIT)
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Networks (1) 1304230Networks (1) 1304230
• Prerequisite: 1304130• Course Description• Text Book:
“ TCP/IP Protocol Suite: Behrouz A. Forouzan,
McGrawHill, Third Edition, 2006 ”• References:
“ Data & Computer Networks: W. Stallings,
Prentice Hall, Seventh Edition, 2004 “
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The OSI Model andThe OSI Model andthe TCP/IP Protocol Suitethe TCP/IP Protocol Suite
Part 1Part 1
•The architecture of the OSI model•The layers of the OSI model and their functions•The architecture of the TCP/IP Protocol Suite• The OSI model V.s The TCP/IP Suite•Types of Internet addresses
Outline
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The OSI ModelThe OSI Model
The The International Standards Organization (ISO)International Standards Organization (ISO) is a multinational body is a multinational body dedicated to worldwide agreement on international standards. dedicated to worldwide agreement on international standards. An ISO standard that covers all aspects of network communications is An ISO standard that covers all aspects of network communications is the the Open Systems Interconnection (OSI)Open Systems Interconnection (OSI) model. model.
ISO is the organization.OSI is the model
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Figure 1 The OSI model
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Figure 2 Physical layer
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The physical layer is responsiblefor the movement of individual bits from one hop (node) to the next.
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Figure 3 Data link layer
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The data link layer is responsible for moving frames from one hop (node) to
the next.
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Figure 4 Network layer
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The network layer is responsible for the delivery of individual packets from the source host to the destination host.
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Figure 5 Transport layer
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The transport layer is responsible for the delivery of a message from one
process to another.
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Figure 6 Session layer
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Figure 7 Presentation layer
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Figure 8 Application layer
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Figure 9 Summary of layers