Component 9; Unit 1: ISO Open Systems Interconnection (OSI)

Description:

This unit will address the OSI, including the purpose and content of each of its seven layers: physical, data link, network, transport, session, presentation, and application. Products, processes, protocols and tools at each level will be explained. This unit will also focus on the flow of data through the models as data is transmitted and receive by end devices.

Objectives:

Explain the OSI representation of the various layers involved in networking, including the general functions of each layer and their interconnections
Explain the concept of the Application layer
Explain the concept of the Presentation layer
Explain the concept of the Session Layer
Explain the concept of the Transport layer
Explain the concept of the Network layer
Explain the concept of the Data Link layer
Explain the concept of the Physical layer
Explain connection-oriented versus connectionless communication
Explain the use of network addressing including security considerations and vulnerabilities

Component 9; Unit 1; Lecture 1a comp9_unit1a_lecture_slides

ISO Layers Terminology of a network: 1) TCP/IP model; 2) OSI model;3) Protocol data units; 4) Application layer; 5) Presentation layer; 6) Session layer; 7) Transport layer; 8) Sequence numbers; 9) Acknowledgements; 10) Window sizing; 11) TCP/UDP Ports

Component 9; Unit 1; Lecture 1b comp9_unit1b_lecture_slides

Networking Protocols: 1) Network layer; 2) IP addresses; 3) Forms of transmission; 4) Subnetting; 5) Routers; 6) Internet Control Message Protocol; 7) PING; 8) TRACERT; 9) Data Link layer; 10) MAC addresses; 11) Media access control; 12) Ethernet; 13) Wireless; 14) Physical layer

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