Looking for Joomla Interview Questions and Answers?

Hi Everyone!
Can anyone please help? I am looking for Joomla interview questions and answers which I can use to gain more knowledge about Joomla. I am a new developer and I would like to apply for a renowned company. They are using Joomla and I would like to ensure that I pass and get the position. What are the important things that I need to know about Joomla?
When it comes to troubleshooting, what are the most common problems encountered by the users and how are you going to handle the problem? What do you think are the important questions to be asked by the interviewer? Can you provide me the basic guide on using Joomla? Any help will be much appreciated.
Thanks.
