Both term implied the same meaning.  If you're business administration students, perhaps you should tick department that relevant to your study, example of business planning, marketing, hr, supply chain management and so on. Don't go for technical department.

Usually they will give feedback thru email after few weeks. Stated whether your application are in process, not complete, or if have not getting response in two months considered it unsuccessful. If success, they might be calling you straight away.

In the meanwhile, try to find alternative company, gain more experience there and later apply Petronas once you have graduated.

u have to be more specific.....like strategic planning, legal, credit, payroll?

petronas flexi hour is 7,8 and 9..if i start work at 8.30 can ar?