Ma’ruzachi: ass.ReypnazarovErnazarNurjamiyevich. OSI etalonmodeli. Amaliypog’ona identifies communication partners, determines resource availability, and synchronizes communication. Ass.ReypnazarovE.N. Taqdimotpog’onasi includes formatting, conversion, translation, encryption, and compression. Text - RTF, ASCII, EBCDIC