I would recommend that they research the company core values, and focus on how they can relate their previous experience into work related scenarios.
Research the area you want to join and ask questions until you have a good idea of what they provide and if it aligns to your values
Be yourself and be honest. Do not force answers and make sure to do your background research.
Have a comprehensive version of a resume, to start with. because the resume reflects on your personality, achievements.
Research is key. Know the ins and outs of the company, particularly their values. Work out how these relate to you as an individual and why you want to work for them. Generic responses (i.e., international company) won't get you very far - be a bit unique and demonstrate that you have genuinely thought about the company and want to work for them.
I would say be yourself and show everything you have done to date whether it is volunteer experience, university assignments or any type of experience.
Have something interesting outside of study/work that you do as a hobby. the managers interviewing me liked to know I am able to maintain a work/life balance prior to joining Accenture
Have a good understanding of Accenture: its structure, competitors, service offerings and major clients
Learn about what he company does and how it does it. Looking up some media releases on work they have done in the past would give you a good idea of the kind of work they do.
Talk to your interviewer as if they were a friend, and ask questions of them too.
Doing your research, understanding the kind of work we do and the people we work with is important, but knowing yourself, showing self-awareness and using specific examples from your experience.
Understand the company you're applying to
Practice case studies and know the industries of the managers who are interviewing you in the case study round. Other than that, just be yourself, because the managers are very understanding and just want to get to know you.
Read on the company profile, have questions prepared, and really define what your assets and skillsets are so the interviewers know and understand your strengths.
Research their website well. Show that you want to be at Accenture, rather than they are one of many places you are applying
Know the lay of the land. Research the latest Business and Technology trends affecting the market, and specifically that which you are looking to moving into (finance, telco etc.). Be ready for questions that aren't related to work, they want to see if you fit the company culture. Show that you are someone who likes solving problems and who is adaptive and can learn quickly.
Read lots about the company, its projects, competitors etc.
Start to build a foundation of general knowledge around new technologies.
Be honest. Don't feel too intimidated. A good handshake gets you further than you think.