My friend shared the interview experience(2014) with me. Here's the geist of what happened. Hope it helps future applicants!

Before the Interview
1. You wait in lobby then after all interviewees arrive, you enter a small room. A senior/prof will guide you.
2. A write-up form will be given to you. There are traits/qualities and description columns. Basically list a detailed example of each quality. The qualities might differ each year but you can refer to SMU SIS admissions page to prepare for the example/trait. Usually on curiosity, teamwork, etc. Also you write down 3 qns to ask the profs. Write fast.
3. Pass supporting documents, both the real and the photocopied for verification. After a short period of time, they would return you the copies for your keeping.
4. Case Study (planning)
basically about finding a solution to a ‘problem’
it differs every interview so there's no pt trying to guess the case study qn
there will be guiding pointers/qns to help you derive your solution
15 min so write fast
Given A4 sized paper for planning. Be neat when writing since you are using this for presentation.
Toughest part of the entire interview, main thing is to think rationally and try to avoid obvious flaws in your plan because it will make your life tough in the presentation later
The Main Interview (in a bigger room)
1. Case Study(presentation)
just go up to the projector and place your paper there and start presenting.
~4 min
expect questions to be asked from the interviewers for them to understand your solutions better...usually they ask because your solution is not feasible in an aspect or your solution's objective is not clearly outlined. Hence the warning written earlier for planning stage.
2. Local Context Estimation Question
1 out of 16 qns that gets chosen
best to provide figures while you explain. pls be smart and use easy figures.
be able to explain your assumptions and process of getting your particular answer. the answer is not crucial but the explanation is.
required to write your answer + explanation on paper. then state your thought processes out loud while the interviewers are going through it
~3 min
3. Q&A session
ask the profs the 3 qns or less. try to ask them rather than them prompting you, you'll give a gd impression and they tend to not ask you the harder qn later when its their time to question you.
please do not ask questions which could be answered on their website
be familiar /w your SMU submission's achievements section and your write-up form as they may or may not ask you qns on that
The interviewers may ask you general questions to know you better. Usually “Why SMU” and “Why SIS” and "Whats your worst subject?", "Whats your weakness and your strength(in context of SIS)?"
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Final Word: Be yourself is common advice but to be honest, in an interview, the most important thing is to be street-smart. This means your interest level must be visible(no matter how bored you are with the other interviewee's speech, look @ them/the prof and feign interest) & be good at thinking on your feet/improvising. Because the profs do glance at what you are up to even when you are not saying anything. Ultimately, passion for IT is what they want to see and what you hopefully can show. The fact that you are here reading this is testament to your commitment to enter SIS. Preparing for an interview = half the battle won. Good luck to all
