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SCJA-drills-chap12
Question | Answer |
---|---|
What is the web tier? | The web tier is the tier within an enterprise system that contains the presentation layer. |
What do web tier components include? | Web tier components include servlets, JavaServer Pages, and JavaServer Faces. |
What is the business tier? | The business tier is the tier within an enterprise system that contains the business logic. |
What do business tier components include? | Business tier components include Enterprise JavaBeans. |
What is the EIS tier? | The EIS tier is the tier within an enterprise system that contains the data layer. |
What do EIS tier activities include? | EIS tier activities include persistence support through database management systems. |
What is SOAP? | The Simple Object Access Protocol (SOAP) is a protocol used for information exchange within a decentralized and distributed environment. |
What is UDDI? | The Universal Description, Discovery, and Integration (UDDI) specification is an XML-based registry that is used by businesses to make their services and general business descriptions available through the Internet. |
What is WSDL? | The Web Service Definition Language is an XML standard for businesses and individuals to access available services that each provide. |
What is XML? | The Extensible Markup Language is a general-purpose specification used for creating markup languages. |
What is SMTP? | The Simple Mail Transfer Protocol (SMTP) is a protocol for sending mail. |
What does the JavaMail API provide? | The JavaMail API is a framework that provides electronic mail functionality. |
What the JAX-RPC? | The Java API for XML-based Remote Procedure Call (JAX-RPC) is an API used to build remote procedure calls in order to build web services and clients. |
What are servlets? | Servlets provide a pure-Java program that functions in response to an HTTP request. |
What are the JSPs? | JavaServer Pages (JSPs) provide a dynamic web content solution that uses template data and custom elements to expedite and ease the development of the presentation layer. |
What are session beans? | The session bean is a type of EJB that performs methods for a client. |
Name two types of session beans related to state. | There are stateful and stateless session beans. |
What is the difference between stateful and stateless beans? | A stateful bean maintains a conversation state for the client, while a stateless bean does not. |
What is an entity bean? | The entity bean is a persistent type of EJB that is typically associated with a table in a relational database. |
What is a message-driven bean? | The message-driven bean is a type of EJB that processes messages asynchronously, acting as a JMS listener. |