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Q152. A large enterprise employs numerous authors to produce content. The decision is made to use a content management system (CMS) to store the content, and its metadata, in a few relational databases. Multiple JSF-based web applications need to display the same data. What implementation strategy would have the most impact on increasing reuse?

A. Using web services to access the CMS

B. Using an object relational mapping technology

C. Using a service locator to find the relational databases

D. Using a component-oriented web application framework

E. Using a templating mechanism to composite view components

Answer: E

Q153. You are the architect on a project to build a bridge between the legacy customer service tool, an outdated VT100 terminal server, and a company's new Java EE web application. You do NOT have access to the terminal server and cannot deploy any code to it. Which approach should you use to integrate the systems?

A. Use a DAO wrapped around a JDBC connection to query the legacy system

B. Deploy a CORBA server to the legacy system and use RMI-over-IIOP to communicate to it

C. Develop a session bean that wraps a screen-scraping tool to interact with the legacy system

D. Develop a web services-based service and use XML to communicate with the terminal server

Answer: C

1Z0-864  exam question

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Q154. You are asked to architect an SOA solution that leverages Java web services. The architecture needs to be flexible and allow for the SOAP 1.1, SOAP 1.2, and REST implementations. Which Java EE technology should you use?





Answer: C

Q155. A small company that sells avatar skins for virtual reality environments, has a static web site for advertising their wares. The web site was created by a talented graphic artist using a popular WYSIWYG (What You See Is What You Get) HTML editor and contains a great deal of JavaScript. The company wants to add server-side processing capabilities for the purpose of developing a shopping application. They are considering using JavaServer Faces (JSF). What is a potential disadvantage the JSF framework?

A. The JavaScript will have to be rewritten to conform to JSF standards.

B. JSF tags cannot be integrated into the HTML generated by WYSIWYG editors.

C. The graphic artist cannot accurately preview the web pages offline with a generic WYSIWYG HTML editor.

D. All the web pages will need to be converted into JSF before going into production, to keep the end users from losing a session context.

Answer: C

Q156. A design company that makes avatar skins for virtual reality environments wants to create an online catalog system that enables customers to purchase skin textures. The company is concerned about being ranked well by search engines and therefore wants their entire catalog to be easily parsed by the search engine bots. Which view generation strategy is the most problematic for this endeavor?

A. using servlets

B. using JSF tags

C. using JSP tags

D. using PHP tags

Answer: B


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Q157. Which two statements describe a design incorporating the use of interfaces and reuse by composition? (Choose two.)

A. This design approach is sometimes referred to as "delegation."

B. This design approach is sometimes referred to as "inheritance."

C. This design approach is sometimes referred to as "white box reuse."

D. This design approach is sometimes referred to as "black box reuse."

E. This design approach is sometimes referred to as "parameterized types."

Answer: AD

Q158. A company architected and developed a Java EE application and now they are having problems with the scalability of the system. The application uses JSPs and servlets deployed to a web container, and stateless session beans and DAOs deployed to an EJB container. The application's non-functional requirement for scalability is to support 500 concurrent users during peak hours of operation. The application can currently support 500 concurrent users, but the response time is 200 percent of what it is acceptable. You have been hired as an architect and have been assigned to help resolve this problem. The company's management is concerned with the hardware budgeting. What initial advice would you give to the company?

A. Add another web server

B. Start a new project to re-architect the application

C. Monitor the application to determine the potential problem areas

D. Add more memory and processors to the hardware hosting the EJB container

Answer: C

Q159. A retail company has a dashboard application that lets executive decision makers view current business information. This information includes gross sales, returned goods dollars, cost of labor, and other information. The information is updated on a continuous basis using a JMS queue. None of this information is critical, so the loss of a few messages is acceptable. Which JMS delivery mode meets these requirements and optimizes performance?

A. Best-effort

B. At-most-once

C. Store-and-forward

D. Once-and-only-once

Answer: B

Q160. Regulatory requirements force a real estate company to invoke an auditing function around each of the business operations implemented in the business tier of its mortgage approval system. The actual auditing code is distributed to developers as a black-box library that cannot be tampered with. The company wants the process of invoking the auditing behavior to be automatic in all the applications that together compose the system, without requiring any changes to their source code. Repackaging of existing modules to satisfy the requirements is allowed. Which two component types support adding the auditing code around each of the company's business methods without any source code changes? (Choose two.)

A. JPA entity class

B. BMP entity bean

C. CMP entity bean

D. message-driven bean

E. stateless session bean

Answer: DE