Diploma

Hundreds of courses in DU, Please specify the stream.

Check this link:
https://www.shiksha.com/accounting-commerce/articles/course-options-after-b-com-blogId-12939

Hotel/Hospitality management is a field that focuses on all areas of hospitality operations including hotels, restaurants, cruise ships, amusement parks, country clubs, and convention centres .Some Good Colleges are listed:
- IHM- Mumbai.
- IHM- Delhi.
- Indian Institute of Hospitality & Management- Thane.
- Rizvi College of Hotel Management- Mumbai
- IHM- Meerut, and many more institutes.

Hello Deepak Kumar,
You may opt for further studies in mechanical engineering or look for specialised areas like robotics, automobiles, manufacturing, transport and automotive design, management, engineering management etc. But firstly you need to know your own interests, what you want to study is a personal choice depending on one's interest and career plans.

Salary depends on the employer/the organisation you joined. But after pursuing Bachelor's and Master's you will get a good pay. It also depends in the colleges from which you complete your Masters and lastly, your own skills.

It depends from where you do it. only full time graduate gets placements