BlackBerry Software Engineer interview questions

I have applied for the software engineer internship position on the website of RIM, after about 3 weeks, the recruiter contacted me and said that one group wants to interview with me. The phone interview is scheduled about 1 week later. Interview Questions: First part: network related What will happen after I open a browser and type www.google.com? When I log into gmail or hotmail, how will the server identify you so next time you don’t need to login again? What’s the difference between sockets and ports? How to check how many sockets are opened in the computer? Second part: Java related. What’s static field? What’s static method? What’s the difference between overloading and overwriting? What’s polymorphism? What’s the difference between abstract class and interface? Can we instantiate abstract class? Can we instantiate interface? What’s the access level in java? What’s the finally block? Can you give me an example of finally block? Third part: programming problems 1. give list1 and list2, suppose they are sorted in ascending order, how to check whether each element in list 2 presents in list 1. What’s the time complexity? 2. Suppose there’s no hashmap class in Java, design your own hashmap class. 3. Give an example where dead lock can happen. 4. calculate the factorial of n.

I gave them my resume at a college career fair. They contacted me a few weeks later and set up a phone interview. The phone interview consisted of a coding problem, which you had to solve using Google docs while the interviewer watches you. The interviewer was very nice and we fixed a couple bugs in my code together. Next I had an on-site interview which lasted all day. I met with 8 different people from the company for 6 interviews and a lunch period. Almost all of the interviews were technical in nature. This includes coding, drawing software diagrams on a whiteboard, and verbally answering some questions. Once again everyone was very nice and they make it very easy for you to succeed.