OSI( Open Systems Interconnection ) made by ISO( International Organization for Standardization ) year 1984. OSI words how information of application software on 1 computer devolves to pass through a media then accepted by back by other computer application software.
7 layer OSI:
Application Layer
Task: providing service for user application; data interpretation; enkripsi / dekripsi; account for on information interchange among programs computer (email etc.); get interaction with software application that applies a component to get communication.
Presentation Layer
Task: account for how data be converted and at format for data transfer (text's format conversion ASCII for document etc.); forming conversion code, translasi is data, enkripsi, and conversion
Session Layer
Task: determine how two terminal look after, pet, and manages connection; form, I manage, and decides session communication among presentation layer
Transport Layer
Task: dividing data as segment; looking after logic connection “ end to end ” terminal squire; providing error's handle
Network Layer
Task: determining network address; determining route who shall be taken up to trip; looking after trafik's queue at network
Link Layer's data
Task: providing link to data and making packet becomes frame that is engaged “ hardware ” then is transported media thru; providing free data flow fault divides network layer; detect / correct transmission effect fault; physical addressing; adding code for synchronization
Physical Layer
Task: account for on data process becomes bit and transfer passes through media; detect and reports channel state and eror (for example available collision)
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