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Identify the role of an intermediary device in a data network and be able to contrast that role with the role of an end device. Role of an intermediary device provides connectivity and ensures data flows. | Communicating over the Network Network Fundamentals – Chapter 2 Objectives Describe the structure of a network, including the devices and media that are necessary for successful communications. Explain the function of protocols in network communications. Explain the advantages of using a layered model to describe network functionality. Describe the role of each layer in two recognized network models: The TCP/IP model and the OSI model. Describe the importance of addressing and naming schemes in network communications. Network Structure Define the elements of communication 3 common elements of communication message source the channel message destination Define a network data or information networks capable of carrying many different types of communications Network Structure Describe how messages are communicated Data is sent across a network in small “chunks” called segments Network Structure Define the components of a network Network components hardware software Network Structure End | Communicating over the Network Network Fundamentals – Chapter 2 Objectives Describe the structure of a network, including the devices and media that are necessary for successful communications. Explain the function of protocols in network communications. Explain the advantages of using a layered model to describe network functionality. Describe the role of each layer in two recognized network models: The TCP/IP model and the OSI model. Describe the importance of addressing and naming schemes in network communications. Network Structure Define the elements of communication 3 common elements of communication message source the channel message destination Define a network data or information networks capable of carrying many different types of communications Network Structure Describe how messages are communicated Data is sent across a network in small “chunks” called segments Network Structure Define the components of a network Network components hardware software Network Structure End Devices and their Role in the Network End devices form interface with human network & communications network Role of end devices: client server both client and server Network Structure Identify the role of an intermediary device in a data network and be able to contrast that role with the role of an end device Role of an intermediary device provides connectivity and ensures data flows across network Network Structure Define network media and criteria for making a network media choice Network media this is the channel over which a message travels Network Types Define Local Area Networks (LANs) - A network serving a home, building or campus is considered a Local Area Network (LAN) Network Types Define Wide Area Networks (WANs) - LANs separated by geographic distance are connected by a network known as a Wide Area Network (WAN) Network Types Define the Internet The internet is defined as a global mesh of interconnected networks Network Types Describe network representations Function of .