Osi model presentation layer?

Can someone explain to me how the file conversion from application A to application B works? Assuming application A uses Unicode and application B uses ASCII, does the presentation layer ensure that the Unicode is converted for application B, or what exactly happens here?

Does anyone have an example to explain it to me?

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lisaloge
1 year ago

In practice, you will hardly find something like this because the definition is missing.

However, an example would be IP addresses. These are specified from layer 3, so a conversion may have to take place between layer 3 and 4.

See here: https://people.cs.pitt.edu/~xianeizhang/notes/network.html

KarlRanseierIII
1 year ago

Jein, it is actually about the fact that a specific encoding/preserving diffraction is usually used during transport on the network. This means that the sending side must convert into the transport format, the receiving to the deviating local coding.

An example from the past:

A channel cannot transport 8 bit weights, but only 7 bit US ASCII. Then a data stream of 8-bit characters for transport must be transformed and returned at the other end. UUencoding would be a typical example if it was implemented as its own network layer (worm).

Another example would be like a JSON serialization.

DonkeyShot
1 year ago

Depends on where Application B performs conversion. When it comes to import, it has nothing to do with representation. (It should be clear that the process is lost.) ….Edit: Or Application A performs conversion during export.