To be eligible for the GATE exam, you need to have completed your Bachelor's degree in Engineering (B.E.) or Technology (B.Tech.) or Master's degree in Computer Applications (MCA) or equivalent qualification. There is no restriction on whether you have done your MCA through regular mode or distance mode.
Here are the eligibility criteria for the GATE exam for MCA candidates:
1. Educational Qualification: You should have a Master of Computer Applications (MCA) degree from a recognised university or institute.
2. Percentage: You must have secured a minimum of 55% marks in your MCA degree if you belong to the General category. For candidates belonging to the Reserved categories (SC/ST/OBC/PwD), the minimum percentage requirement is 45%.
3. Year of Passing: There is no restriction on the year of passing your MCA degree. You can appear for the GATE exam within 2 years from the date of completion of your MCA.
4. Number of Attempts: You can appear for the GATE exam a maximum of 3 times if you belong to the General category and 5 times if you belong to the Reserved categories.
So, if you have done your MCA through distance mode and meet the other eligibility criteria, you can apply for the GATE exam and pursue higher studies in engineering.