Pass4side SUN 310-052考试题库分享（1-5）

1. What are the three primary roles in a web service interaction? (Choose three.)A. BrokerB. FacadeC. ProviderD. DecoratorE. RequestorF. InterceptorAnswer: ACE
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2. A stock trading company is writing a new application for stock market forecasting. A significant portion of thework required by the business logic involves navigating through the persistent object model. As lead architect onthis project, you have chosen JPA over EJB2 entity beans to implement these persistent objects. You have donethis to maximize performance when navigating through the model. Why does JPA offer better performance for thistask?A. JPA guarantees referential integrity at the object level.B. JPA allows the application to specify lazy or eager retrievals.C. JPA simplifies the source code that implements the object model.D. The guaranteed referential integrity in EJB2 entity beans is expensive.Answer: B
3. A developer creates a Java web service to be used by consumers in an SOA. This SOA uses a UDDI serviceregistry. How can the developer make the new service available to consumers?A. deploy to the registry using JAXRB. publish to the registry using JAXRC. query the registry using JAX-RPCD. target the registry using JAX-RPCAnswer: B
4. With the release of a new product line, there has been a significant increase in the volume of transactions onyour web site. You need to scale your application and manage session failover. What is the best option forscalability?A. add additional web servers and application serversB. introduce a High Availability pair and utilize sticky sessionsC. add additional application servers and implement DNS round robinD. add additional application servers and use clustered HttpSessionAnswer: D
5. You are asked to architect an SOA solution that leverages Java web services. The architecture needs to beflexible and allow for the SOAP 1.1, SOAP 1.2, and REST implementations. Which Java EE technology shouldyou use?A. JAXPB. JAXBC. JAX-WSD. JAX-RPCAnswer: C
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