It's means that if you wanna apply for a certain job. They want to have at least some knowledge of what you're applying for.
what is mean Location Preferred
if you mean why is a desktop preferred over a laptop. then i would answer that they aren't and that laptops are preferred because of their convenience
preferred or favourite - (feminine)
what is mean Location Preferred
what is mean Location Preferred
It means "Experience Preferred".
The preferred days of the students are...
They are asking what sort of job would you like.
If you mean that which vs which, the former is very formal and archaic. Which is preferred.
standard deviation
My preferred/favourite sport is....
It dosent mean anything if you have a friend the diffrent sex.