Diploma in Computer Teacher Training (D.C.T.T.) refers to a specialized program that prepares individuals to become computer teachers or educators. The program typically focuses on imparting essential teaching skills and methodologies specifically tailored for computer-related subjects.

The duration of a D.C.T.T. program may vary, but it is typically a short-term diploma course that can be completed within a few months to a year, depending on the institution offering the program. Please note that educational programs and their names can change or evolve over time, so it's essential to verify the specific details and curriculum of the D.C.T.T. program with the educational institution offering it, especially if you are looking for the most up-to-date information.