MBA Scope

There are multiple specializations in MBA such as finance, marketing, human resources, IT, SCM, logistics, operations, systems, general management or sector specific specialization like travel, healthcare, banking, insurance, etc. One must choose MBA specialization based on their interests, educational background, prior job experience and personality, skills and competencies. Individuals with good numerical ability can do well in the field of finance, particularly investment bank. Marketing is suitable for extroverts. People with social skills and empathy are suitable for HR.

Hi,
There are so many good colleges for pursuing MBA, but if the particular one have defense quota or not depends upon college to college, but most of the government colleges do have it, but this doesn't mean that one don't needs to appear for the entrance test. Quota defines number of seats, not marks.
All the best.

Again doing a MBA from a good college matter.their in house placements are of prime importance.in your case since you have already worked you will have good exposure and advantage during placements .

You can do CFA course.

Yes, if done from top 20 B-schools in India with good academic background, qualifications and good management insights.

Students learn advanced nursing theories in these programs which enable them to take up top level positions in the field of nursing. Registered nurses can qualify for administrative or managerial positions by earning MBA of nursing degrees.

Below mentioned are the top 5 reasons to pursue Masters in Business Administration:
1. Higher salary.
2. Better career opportunities.
3. Better consolidated business network.
4. New skill and knowledge acquisition.
5. A holistic perspective on the business world.

MBA is a Master's degree. You can do BBA after completing class 12th. First, you need to complete your Bachelor's degree, then you will be eligible for MBA.
Best of luck.