from capital airport teminal 2 to terminal 1 do i need to transport /bus?

It's not necessary for you to take a shuttle bus. There is a special passenger way for you to transfer between two terminals. Only walk a few minutes you will arrive at T1.

If you want, you can take free shuttle bus at Gate No.7, 1st Floor of T2, and get off at T1. It operates 24 hours with the interval of 15 to 30 minutes.