Slide

  • LINUX

    LINUX:In 1969 AT&T made a decision to withdraw Multics and go with GECOS (General Electric Comprehensive Operating Supervisor / System), with AT & T in Bells Lab when Multics was withdrawn some of the programmers named Ken Thompson and Dennis Ritchie decided to rewrite operating system in order to support low cost computer..To Know More

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  • MICROSOFT

    MICROSOFT:Microsoft was established to develop and sell BASIC interpreters for the Altair 8800. It rose to dominate the home computer operating system market with MS-DOS in the mid-1980s,followed by the Microsoft Windows line of operating systems. To Know More

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  • CISCO

    CISCO:During the early 1980s, there was a married couple namely Len and Sandy Bosack who used to work in two different departments of computer located in Stanford University. This couple was facing problem in making their computers communicate with each other To Know More

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OSIMODEL


OSIMODEL

(ISO  Invent)




Open System Interconnection


Number 7-1 is called In capsulation
Number 1-7 is called  DE capsulation




WEB SERVICES

Source Port : 33325                                           Source Port : 80
Destination Port : 80                                         Destination Port: 33325




Define Layers

Physical layers :
 
·       Binary Transmission : Physical layers define the electric, Mechanical  procedural and Specification for activating  maintaining and deactivating the Physical link.
DATA  LINK LAYERS :
·       Access to media : Data link define how data is formatted for transmission and how access to the network is control.
NETWORK LAYERS :

·       Data Delivery
1.     Routers data packets
2.     Select best part to deliver data
3.     Provide logical addressing and path selection
TRANSPORT LAYERS:
End to End connection
1.     Handle transportation issue between host
2.     Insure data transport reliability and flow control
3.     Establishes, Montanan and Terminate Virtual  Circuits


SESSION LAYERS:
Inter Host Communication
Establishes, Managers and Terminate Session between Application.
PRESENTATION LAYERS:

Data Representation
1.     Formatting and Structuring Data.
2.     Negotiate Data transferred SYNTEX and APPLICATION layers
3.     Provide CRYPTION

APPLICATION LAYERS:
Network Process to Application
1.     Provides network services to application processes such as Email, File transferred and terminal emulation.
2.     Provides user authentication
 

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