1Z0-807Java EE 6 Enterprise Architect Certified Master
90 Questions and Answers Experienced specialists selected 90 questions for this exam. All answers are verified to ensure correctness.
Last Updated Apr 25, 2024 Ace your exams with our consistently updated 1Z0-807 exam dumps.
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1Z0-807 Online Practice Questions and Answers
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?
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A. JPA ensures thread safe semantics
B. JPA ensures optimal database access logic
C. JPA does not require an FJB container
D. JPA provides vendor-neutral database access
E. JPA provides ACID semantics
F. JPA provides transparent scalability
The integration team has reported a problem in testing a few deployed MDBs. By design, each MDB listens to one of four named queues. Two producers write messages to each queue. The test issues messages of the same payload type that each producer will send, but varies the number or size of these messages to measure the messaging server's performance.
The team has noticed that the utilization remains at the same high rate any time the test writes messages destined for the third MDB. The message server log does not reveal any failure in sending messages to this MDB. Which anticipation expresses cause for this condition?
A. Hot Potato
B. Leaky Abstraction
C. Cache less Cow
D. Golden Hammer
While analyzing an application, you observe that it contains numerous Interfaces for complex domain logic. Completing a business Function currently requires calling several of these interfaces in an order that is understood by system experts.
Which design pattern would you suggest to refactor the code?
A. MVC
B. DAO
C. Adapter
D. Decorator
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