Diploma

If you want to be a PGT, as you have Master’s degree and B.Ed, you need not have to do Diploma. But, if you want to be an elementary level teaching, then you have to do it. You can do a 6 month bridge course also.

Hello Sunil,
PG diploma indicates that it is "Post Graduate" diploma. Meaning you can do it only after obtaining graduation. Unfortunately two years if study for diploma or even obtaining this diploma is not equivalent to degree and hence unfortunately you are not eligible.

Hello Sunil!
No, it is not possible. As you have opted for a non engineering branch (computer science) and textile engineering is more of chemical oriented course, you cannot opt for it.

You can pursue based on your experience in any institution you want.

Sorry. A diploma holder is not eligible to do master/post graduation courses unless he or she completes a degree course. You can go for degree/post diploma or short term courses.
All the best.