12.But not parallelism, it is achievable to have concurrency in operating system threading?

Yes, it is possible to have concurrency but not parallelism. Concurrency: Concurrency means where two different tasks or threads start working together in an overlapped time period, however, it does not mean they run at same instant.

research the organization

compare your skills and qualifications

prepare responses

plan what to wear

plan what to bring

pay attention to non- verbal communication

follow up  

i'm pretty sure data is stored in a form