What is the difference in the way FTP clients and servers will handle data of ASCII and in IMAGE type.


  1. Different computers use different ways of representing lines of text and line breaks. In ASCII mode, the text is converted to a standard format, a sequence of character octets with CRLF between the lines. The receiving computer converts this to the format use at the receiving end.
  2. Different computers store text in different byte sizes, this is in ASCII mode converted to 8-bit bytes before transmission.
  3. In ASCII mode, character set transformation may occur, if the sending and receiving computers use incompatible character sets.
  4. In binary mode, the binary data are mapped on a sequence of octets, which at the receiving end is mapped back to the same binary data as before the transmission.

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