Sunday, 1 February 2015

Technical Round J2EE Interview Questions and Answers (Part5)

41. What is commit
The point in a transaction when all updates to any resources involved in the transaction are made permanent.

42. What is component contract
The contract between a J2EE component and its container. The contract includes life-cycle management of the component, a context interface that the instance uses to obtain various information and services from its container, and a list of services that every container must provide for its components.

43. What is component-managed sign-on
A mechanism whereby security information needed for signing on to a resource is provided by an application component.

44. What is connector
A standard extension mechanism for containers that provides connectivity to enterprise information systems. A connector is specific to an enterprise information system and consists of a resource adapter and application development tools for enterprise information system connectivity. The resource adapter is plugged in to a container through its support for system-level contracts defined in the Connector architecture.

45. What is Connector architecture
An architecture for integration of J2EE products with enterprise information systems. There are two parts to this architecture: a resource adapter provided by an
enterprise information system vendor and the J2EE product that allows this resource adapter to plug in.
This architecture defines a set of contracts that a resource adapter must support to plug in to a J2EE product-for example, transactions, security, and resource management.

46. What is container
An entity that provides life-cycle management, security, deployment, and runtime services to J2EE components. Each type of container (EJB, Web, JSP, servlet, applet, and application client) also provides component-specific services.

47. What is container-managed persistence
The mechanism whereby data transfer between an entity bean's variables and a resource manager is managed by the entity bean's container.

48. What is container-managed sign-on
The mechanism whereby security information needed for signing on to a resource is supplied by the container.

49. What is container-managed transaction
A transaction whose boundaries are defined by an EJB container. An entity bean must use container-managed transactions.

50. What is content
In an XML document, the part that occurs after the prolog, including the root element and everything it contains.
More Questions & Answers :-
Part1  Part2  Part3  Part4  Part5  Part6  Part7

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