Study tips 1z0-861

Which statement is true about the Timer service in an EJB 3.0 stateless session bean?

Which statement that describes the functionality of optimistic locking is correct?

When does a new persistence context begins?

Which option can the developer use?

which statement is true when the work() method is invoked by a client with an existing transaction context and execution reaches Line 15?

Which design can meet this requirement?

which of these conditions could this be possible?

Bean A is using bean-managed transaction demarcation and has invoked the foo method of bean

which two statements are correct?

Which statement is correct?