Pass4sure Oracle 1Z0-868 Practice Tests & Real Exam Questions
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Answer: B<br />
Question: 7<br />
A company is in the business of distributing hard candies. The distribution of these candies is<br />
automated and the system that helps track information about candy distribution is written in Java<br />
technology. The business unit for the company has been asking the IT group to provide a flexible<br />
reporting system to track detailed information. A large amount of data about candy is stored using a<br />
DAO layer, but little is used. What is the best solution for the IT group to implement to provide the<br />
most flexibility for the business unit?<br />
A. refactor the DAOs to include additional static queries to pull information and export a spreadsheet<br />
for the business unit to review<br />
B. implement an ad-hoc query tool exposed using JSF that allows business units to create queries and<br />
produce results in a given format<br />
C. provide a JSP page, which has scriptlets that expose pre-defined queries for the business unit to<br />
execute and display in HTML<br />
D. create a web service that exposes fixed queries invoked by a JSP client that can pull data from the<br />
database and export in a given format<br />
Answer: B<br />
Question: 8<br />
A company architected and developed a Java EE application and now they are having problems with<br />
the scalability of the system. The application uses JSPs and servlets deployed to a web container, and<br />
stateless session beans and DAOs deployed to an EJB container. The application's non-functional<br />
requirement for scalability is to support 500 concurrent users during peak hours of operation. The<br />
application can currently support 500 concurrent users, but the response time is 200 percent of what<br />
it is acceptable. You have been hired as an architect and have been assigned to help resolve this<br />
problem. The company's management is concerned with the hardware budgeting. What initial advice<br />
would you give to the company?<br />
A. add another web server<br />
B. start a new project to re-architect the application<br />
C. monitor the application to determine the potential problem areas<br />
D. add more memory and processors to the hardware hosting the EJB container<br />
Answer: C<br />
Question: 9<br />
What are three web service support features in Java EE? (Choose three.)<br />
A. generating a web service from an MDB<br />
P a g e | 4<br />
P a g e | 4
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