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Exam Code: 1Z0-807
Exam Name: Java Enterprise Edition 6 Enterprise Architect Certified Master Exam (Step 1 of 3)
One year free update, No help, Full refund!
1Z0-807 Real Exams Total Q&A: 90 Questions and Answers
Last Update: 06-11,2015

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NO.1 You are the architect of a web application that uses javaServer Faces (JSF) as a presentation
tier;
and for business processes coded as stateless session beans. When you add new code to the stateless
session beans to address new accounting requirements, without changing the interface, you discover
that the new business processes are being ignored by some of the JSF components.
What might be the cause of this problem?
A. The presentation tier is relying on validation logic in the business tier.
B. The browser is caching out-of-date versions of the JSF components.
C. The business processes are not rigorously encapsulated in the session beans.
D. The new session beans have been deployed incorrectly, and proper deployment will resolve the
problem.
Answer: C

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NO.2 Which three statements are true about inheritance?
A. It should be possible to substitute the derived class for its base class.
B. Inheritance allows you to modify the behavior of objects.
C. Inheritance promotes encapsulation better than interfaces.
D. The derived class must override all methods of the base class.
Answer: A,B,C

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NO.3 Which two statements are true about transport-layer security?
A. It is loosely coupled with the transport-layer protocol.
B. It is an end-to-end security mechanism.
C. It prevents the captured data from being replayed at a later time.
Answer: A

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NO.4 While analyzing an existing web application, you observe the following issues in the source
code:
-Duplicatecontrol code is scattered throughout various view. -Businessand presentationlogicare
mixed within these view.
The next phase of the project involves refactoring the existing code to address these two issues.
Which design pattern, if employed in the refactoring exercise, would most directly address the two
issues?
A. Service to Worker
B. Dispatcher view
C. DAO
D. Composite View
Answer: A

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Reference:http://www.vincehuston.org/j2ee/corepatterns.html(see 'service to worker')

NO.5 You are using an open source integration framework in your project. However, key interfaces
do not explicitly define several strange conditions you have repeatedly seen while testing.
Which option is the name given to the anti pattern described above?
A. Composite View
B. Leaky Abstraction
C. Asynchronous Interaction
D. Golden Hammer
Answer: B

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Explanation:
All non-trivial abstractions, to some degree, are leaky.
An abstraction that works most of the time, but where a detail of the underlying complexity cannot
be ignored, thus leaking complexity out of the abstraction back into the software that uses the
abstraction.

NO.6 Which two measures are most effective in protecting websites from cross site scripting (XSS)
attacks?
A. Escape "<" and ">" parameters that displayed or evaluated by the JavaScript interpreter.
B. URL-encode "<" and ">"parameters so they will never be evaluated by the JavaScript Interpreter.
C. Ensure that thesession cookie is sent only onHTTPSconnections.
D. Treat all user-supplied input as unsafe, and white list known good characters
E. Execute all user-supplied scripts in aserver-side sandbox.
Answer: C,E

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NO.7 Which two functions are essential parts of a service oriented architecture (SOA) infrastructure?
A. The service provider, which executes business logic in a stateless fashion
B. The service consumer, which accesses services from the service repository
C. The service repository, which stores software component metadata
D. The service broker, which delivers well-defined service-level agreements
E. The service look-up facility, which provides a central resource for naming and access
Answer: A,C

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NO.8 You are the lead technical designer for a new B2C retail application. A key goal is to minimize
design and build complexity in order to maximize speed to market.
Which three features of JPA make it the most appropriate technology to use in building the
persistence layer of the application?
A. JPA ensures thread safe semantics
B. JPA ensures optimal database access logic
C. JPA does not require an EJB container
D. JPA provides vendor-neutral database access
E. JPA provides ACID semantics
F. JPA provides transparent scalability
Answer: C,D,E

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