G22.2262
September 10, 1998

Introduction to Networking
 

GOALS OF NETWORKING

PROTOCOLS LAYERED ARCHITECTURE THE OSI REFERENCE MODEL     Layer 1 - Physical Layer
        Responsible for transmission of raw data over a communication medium
    Layer 2 - Data Link Layer
        Detects and corrects any errors that may occur in the physical layer transmission
    Layer 3 - Network Layer
        Responsible for relaying and routing information to its destination
    Layer 4 - Transport Layer
        Provides a consistent interface for ``end-to-end'' communications
        Frees upper layers from the concerns of achieving data transfer
    Layer 5 - Session Layer
        Provides the services needed to coordinate dialogue and manage data exchange
    Layer 6 - Presentation Layer
        Responsible for the selection of an agreed syntax to be used for the transfer of information
    Layer 7 - Application Layer
        Window into the OSI environment
        Provides common elements for management of OSI resources
        Some elements provide:
            -File transfer
            -Distributed processing
 

MODES OF SERVICE

CLIENTS AND SERVERS SERVICES SERVERS CLIENTS ADDRESSES

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