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Code d'Examen: 1Z1-522
Nom d'Examen: Oracle (JD Edwards EnterpriseOne Financial Management 9.0 Essentials)
Questions et réponses: 70 Q&As
Code d'Examen: 1Z0-864
Nom d'Examen: Oracle (Java Enterprise Edition 5 Enterprise Architect Certified Master Exam (Step 1 of 3))
Questions et réponses: 238 Q&As
Code d'Examen: 1Z0-854
Nom d'Examen: Oracle (Java Standard Edition 5 Programmer Certified Professional Upgrade Exam)
Questions et réponses: 138 Q&As
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NO.1 Your web application requires access to several different services, so you created a Service Locator
class to be used by the UI developers on the team. New services with different interfaces are occasionally
added. Unfortunately, the caching benefits of the Service Locator class are NOT being realized because a
new instance of this class is being created in every backing bean method that requires a service. Which
pattern should you apply to eliminate this problem?
A. Bridge
B. Singleton
C. Prototype
D. Factory Method
E. Business Delegate
Answer: B
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NO.2 Your new architecture needs to access the business logic of an Enterprise Information Solution (EIS).
What are three benefits of using the Java Connector Architecture to connect to EIS instead of
implementing a proprietary solution? (Choose three.)
A. Security
B. Performance
C. Loose coupling
D. Connection pooling
E. Common Client Interface
Answer: A,D,E
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NO.3 What is an advantage of XML over HTTP, as compared to SOAP over HTTP, for web services?
A. Guaranteed delivery
B. More security options
C. Smaller message size
D. Strongly typed parameters
Answer: C
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NO.4 A stock trading company is writing a new application for stock market forecasting. A significant portion of
the work required by the business logic involves navigating through the persistent object model. As lead
architect on this project, you have chosen JPA over EJB2 entity beans to implement these persistent
objects. You have done this to maximize performance when navigating through the model. Why does JPA
offer better performance for this task.?
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
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NO.5 An online sporting goods store's web application uses HTTPSession to store shopping carts.
When the application is initially deployed, the business plan predicts only a few customers will access the
site. Over time, the store projects a steady increase in volume. The deployment plan calls for a single web
container in the initial deployment. As demand increases, the plan calls for multiple web containers on
separate hardware with clustered HTTPSession objects. Which two principles will help the application
meet the requirements and optimize performance? (Choose two.)
A. The application should store as much as possible in HTTPSession objects.
B. The application should NOT make frequent updates to HTTPSession objects.
C. The application should make coarse-grained updates to HTTPSession objects.
D. The application should create new HTTPSession objects instead of updating existing objects.
Answer: B,C
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NO.6 With the release of a new product line, there has been a significant increase in the volume of
transactions on your web site. You need to scale your application and manage session failover. What is
the best option for scalability?
A. Add additional web servers and application servers
B. Introduce a High Availability pair and utilize sticky sessions
C. Add additional application servers and implement DNS round robin
D. Add additional application servers and use clustered HttpSession
Answer: D
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NO.7 What are two benefits of using the Value List Handler pattern? (Choose two.)
A. Improves network performance
B. Facilitates exposing existing services
C. Provides an alternative to potentially inefficient EJB finders
D. Facilitates post-processing across heterogeneous requests
E. Provides a mechanism to support shared elements of composite views
Answer: A,C
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NO.8 What are the three primary roles in a web service interaction? (Choose three.)
A. Broker
B. Facade
C. Provider
D. Decorator
E. Requestor
F. Interceptor
Answer: A,C,E
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