Hello Harshith,
The eligibility criteria will depend on when you are admitted to MCA. Since you have cleared your 4th semester backlog exam and the results will be available in November, you could still be enrolled in this academic year if university allows acceptable provisional admission with pending results. Several colleges allow this, provided you submit the cleared marksheet before a deadline. Should the admission authority be strict about having all semester's results available at time of counselling, you will have to wait until next year to apply. I would also suggest checking with the university or PGECET counselling information.
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