Formatting and code conversion occurs in the ________ layer of the OSI model and the ________ layer of the TCP/IP stack. A. Data Link, Network Access B. Network Access, Data Link C. Application, Presentation D. Presentation, Application Solution D is correct. Formatting and code conversion are Presentation layer functions in the OSI model. The Application layer in TCP/IP maps to the top three layers of the OSI model. A, B, and C are incorrect..