Understanding the basic computer networking is a must for a person to understand the AFDX in an aircraft. For that reason, I had embarked in a journey to learn about networking.
We know that the data sent through internet packages, each has the addresses of sender and receiver.
To enable the different computers understand the messages, in 1970's - ISO formulate the standard OSI model - the open system interconnection.. The network is in 7 layers:
application, presentation, session, transport, network, data link, physical.
We know that the data sent through internet packages, each has the addresses of sender and receiver.
To enable the different computers understand the messages, in 1970's - ISO formulate the standard OSI model - the open system interconnection.. The network is in 7 layers:
application, presentation, session, transport, network, data link, physical.
In order to remember, take the first letters of the words, and you will have... all ... people seem to need data processing.
The Function of The Layers
application layer -deal direct with the user. When you have something to send, the application layer will say... "hai, I have something to send".
- presentation layer will format the things that you want to send.
- session layer - syncronisation so the sending and receiving syn
- transport layer - manage the package, data when sent are broken into packages
- network - routing and addressing, like ip addressing.
- data link - data frame management, the actual packaging, putting into the proper envilope.
- physical layer is the actual hardware.
When you are receiving the information, the path is reversed. It start with the physical layer.
How Data is sent and received
As it move down, information is being added to the data. On the receiving side, the wrapper is unrapped layer by layer, until the pure data is read.
TCP IP Model
It is based on DARPA model with 4 layer of data.
They are...
Appication
Transport
Internet
Network Access
The 4 layers relate to the 7 layer OSI model.
The Function of The Layers
application layer -deal direct with the user. When you have something to send, the application layer will say... "hai, I have something to send".
- presentation layer will format the things that you want to send.
- session layer - syncronisation so the sending and receiving syn
- transport layer - manage the package, data when sent are broken into packages
- network - routing and addressing, like ip addressing.
- data link - data frame management, the actual packaging, putting into the proper envilope.
- physical layer is the actual hardware.
When you are receiving the information, the path is reversed. It start with the physical layer.
How Data is sent and received
As it move down, information is being added to the data. On the receiving side, the wrapper is unrapped layer by layer, until the pure data is read.
TCP IP Model
It is based on DARPA model with 4 layer of data.
They are...
Appication
Transport
Internet
Network Access
The 4 layers relate to the 7 layer OSI model.
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