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Unit 5 - Coggle Diagram
Unit 5
Internet Of Things
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Digital Sensors
Mainly used in water and industrial processes, measure things like pH, conductivity etc.
OSI Layers Stack
Application
Used by end-user software for example, web browsers and email clients. Provides protocols which allow software's to send and receive information and present data that is readable to users.
Presentation
Transforms data into a form which the application can accept. Formats and encrypts data for it to be sent across a network.
Session
Controls the dialogues or connections between computers. Establishes, manages and terminates the connections between the local and remote application.
Transport
Controls the reliability of a given link through flow control, segmentation and de-segmentation, and error control.
Data Link
Provides functional and procedural means to transfer parts of data between computers on a network and to detect and correct errors in physical layer.
Physical
Defines the relationship between a device and a way for transmission such as a copper or optical cable.
Network
Breaks up segments into network packets and reassembles them on the receiving end. Route packets by discovering best path across a network.
Virtualisation
Data Virtualisation
Form of data management allowing an application to retrieve and manipulate data without technical details about the data.
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Server Virtulisation
Process of dividing a physical server into multiple virtual servers by means of a software application, each able to run its own OS.
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