Need advice: resume length

I’m looking for a job in investment banking, consulting, investment management, asset management, equity research etc, mainly finance in Australia.

Q1: Is HR too busy to review a 2-page resume, or it’s fine? University Career & Employability said that it’s not necessary to be 1 page here, but I did see some companies (not just IB, but also other sectors) requiring 1 page. Can anyone really knowing industries and marketplace tell me?

Q2: Shall I list relevant subjects for both Bachelor and Master in the Education background or not?

Q3: is the resume format for IBD is different from others? I heard there is a special format for IBD.

Q4: is 6 lines too much for the section “profile”in a resume? How many maximum lines it can be?

Thanks