Full Time

Online MBA where everything including exam is conducted online is not at all valid degree hence scrap of the paper. distance learning MBA is not approved by AICTE hence you are not eligible for government job where AICTE approval is mandatory including teaching. A full time MBA from tier 1 and tier 2 institute is not at all comparable with any institute whose ranking is beyond 75 and most of the employer may not give any additional weightage while selecting.

Yes, you can do that if an institute gives you admission without transfer or migration certificate such as IGNOU, YCMOU, etc.

Executive MBA is for those candidates who have more than 2 years of work experience and it is of 1 year. Regular MBA can be pursued by any graduate with or without work experience.

1 year executive MBA is a good option, as you have a work-ex of 3 years. Generally 2 year full-time program is suitable with 1-2 year work-ex. You can look for 1 year programs offered by IIMs, GLIM, ISB, SP JAIN.

Yes, you can very well opt for MBA. A good score in CAT is very beneficial for you, as you already gained 6 of years experience as entrepreneur. Apart from MBA, you can also try for 1 year executive MBA.