What are the most common job interview questions?

what are the commonly asked questions during an interview and how should I respond to them?

It depends - most places are going to competency based interviews. They ask you to describe a time when something happened and what you did.

for example.
'Tell me about a time when you had to cut corners but still get the job done? How did cutting corners affect the outcome?'

Don't be afraid to use personal references, they don't have to always be work related. Find SOMETHING to respond with. (there's nothing worse than saying 'I never do that or I don't know') Even if you have to ask if you can tell them what you would do if the situation would arise if you've never experienced it.

Be honest with your answers and try to be as thorough as you can. Relax and don't be nervous. Be professional - don't use slang, dress appropriately, speak clearly, shake their hand when you greet them etc.

Good Luck!