Q. If there’s an existing transaction in progress, the current method should run within the nested transaction.

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Q. For two transactions T1 and T2, T1 reads a field that has been updated by T2 but not yet committed.

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Q. For two transactions T1 and T2, T1 reads a field and then T2 updates the field.

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Q. For two transactions T1 and T2, T1 reads some rows from a table and then T2 inserts new rows into the table.

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Q. For two transactions T1 and T2, they both select a row for update, and based on the state of that row, make an update to it.

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Q. Isolation Levels Supported by Spring:-

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Q. The exceptions that cause a transaction to roll back or not can be specified by attribute:-

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Q. Key technology in developing distributed applications, especially multi-tier enterprise applications.

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Q. Java-based remoting technology that allows two Java applications running in different JVMs to communicate with each other.

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Q. To expose a service through RMI, you have to create the service interface that extends:-

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Q. To call the methods on a remote service:-

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Q. Spring remoting facilities can significantly simplify the RMI usage on both the server and client sides.

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Q. There are several properties you must configure for an RmiServiceExporter instance:-

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Q. By default, RmiServiceExporter attempts to look up an RMI registry at localhost port 1099.

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Q. The Spring support classes facilitate building session beans:-

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Q. Spring EJB Support Classes for Different Types of EJB:-

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Q. EJB support classes provide access to the Spring IoC container for you to implement your business logic in POJOs and wrap them with EJB components.

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Q. OpenEJB 3.1.1 supports:-

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Q. If you want to expose EJB component for local access within an enterprise application, the preceding two interfaces should extend EJBLocalObject and EJBLocalHome.

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Q. The ejbCreate() method is the EJB hook for initialization of state, much as a JSR-250 annotated @PostConstruct() method or afterPropertiesSet() method work in Java EE 5 and Spring.

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