Liferay is an awesome tool for writing portal applications. A portal is nothing but similar to iGoogle. It has various small application windows running to perform individual tasks. These portals can be seen on news, enterprise IT Support, Travel portals etc.
Here are some interview questions for those appearing for an interview on Liferay. Though these may seem to be straight questions but the interviewer can grill you more once the discussion on a particular liferay topic starts. So be prepared for liferay interview.