In the 5 beta exam, there were questions that did ask about earlier versions of EJB. I would say that some knowledge of EJB 2.0 would be helpful in some aspects of the exam.
Hi Cameron well i have done project one year ago in Ejb 3.0 and used its entity and stateless bean feature..
but i am bit out of touch.. but learned that its easy to use like it has @annotation, ejb can be easily exposed as webservices ? no home and remote interface reqd just anootations will be enought with proper anootation..
and lot of change in entity beans, but still wondering what kind of question they are going to ask ? like even if you don't know ejb 3.0 could just recall the KIND and TYPE of questions...