Which layer of the OSI model does TCP operate? 01/09/2017 – by Admin_VCEguide 0 At which layer of the OSI model does TCP operate? A. 1 B. 2 C. 3 D. 4 E. 5 SHOW ANSWERSCorrect Answer: D Explanation/Reference: Explanation: http://en.wikipedia.org/wiki/OSI_model