Dear Manisha, if you are talking aboit DU MCA, the official bulletin doesnt mention anything about a gap between accademics. As long as you have completed your graduation with a minimum aggregate of 60% and have syudied a minimum of 2 papers in Mathematical Sciences namely Computer Science, Statistics, Operational Research and Mathematics, you are good to go. For confirmation and important dates, you can visit our page at: https://it.careers360.com/exams/du-mca-entrance-exam