India

According to CDS eligibility criteria 2020, candidates applying for the exam must be 20 to 24 years. Candidates who have passed graduation or appearing for their final year are eligible to apply for CDS exam provided they submit a relevant certificate of passing the examination at the time of commencement of course.

Hey
https://www.shiksha.com/it-software/course/bachelor-of-computer-application-bca-adbu-assam-don-bosco-university-guwahati-408993
Here are the complete details of the course, you can follow the link to know each and every detail of the couse and the colleges offeing this course.

You should have scored a minimum pass percentage either at the 12th level or graduation level. The percentages are 45% marks for General category, 42% for OBC and 40% for SC/ST categories. at graduate add 5 % to these.

Hi,
After completing your B.Ed, you will have to qualify for the TET/CET exams. After this, you can apply for teaching jobs. For teaching out of India better go for professorship after doing Ph.D. There process is very difficult. You have to be a recognized doctorate by publishing researches etc.

Even if you have lost the chance to appear for JEE Mains in January, there is no need to worry since NTA will be conducting the exam again in April. There is no point in focusing on MCA after BTech from IIT. You should aim for MTech. However, if you want to do MCA then instead of BTech in IIT, you may do BCA after class 12th.

There is nothing wrong with engineering degree completed in 5 years. Both degrees i.e. 4 and 5 years have equal opportunities in employment and higher studies. So there is no specific rule for the students.