Hello,

It totally depends on you understanding and knowledge. If you are very good with the Computer Science basics, maths, aptitude and English, then one year would be enough to crack the exam and score high marks and get a seat at any NIT. However, if you think you are somewhat weak, then you should start a bit early. For more information, go through the link mentioned below:

https://it.careers360.com/exams/nimcet