Java EE 6 Enterprise Architect Certified Master (1Z0-807) Free Practice Test

Question 1

Oasis Corporation has decided to develop a single Instance multi-tiered application with its existing EIS resources. You are the technical lead for the Integration team responsible for providing the following:
-A common Interface that can easily access theheterogeneous EIS resources -Generictransaction mechanismsupport for EIS resource managers -Aconnectionpool tolegacy EIS resources
Which two technologies would you use to meet these requirements?

A. JAX-RS

B. JMS

C. JDBC

D. JAX-WS

E. JCA

Correct Answer: C,E

Question 2

An investment company has purchased a number of small online business referral systems that appeal to various niche demographics. The company wants to bring these networks together in hopes of finding a broad, single theme and brand image for these groups before they can do that, they need to get the users communicating with outside their current networks.
Which Web Services pattern would you recommend they consider in building a scheme to accommodate this communication?

A. PAOS Interactions

B. JMS Bridge

C. Web Services Broker

D. Asynchronous Interactions

Correct Answer: D

Question 3

Which three principles are best practices when implementing a logging strategy for an enterprise application?

A. Never print log messages to the console window.

B. Include programmer-specific data in the log messages.

C. Use the appropriate logger level for logging information.

D. Include the thread name and Java class name in log messages.

E. Log messages for every method entry and exit.

Correct Answer: B,C,E

Question 4

You are consulting with a team that has maintained several legacy database for years. They have reviewed the JPA spec and are wondering if the technology would offer benefits over this current SQL base.
Which statement identifies a risk of adopting JPA?

A. JPA doesn't provides ACID semantics.

B. JPA may be able to model every table as a class.

C. JPA only works with well-known data models.

D. JPA's query languagerelies on a container to manage the persistence layer.

E. JPA could render code that requires extensive SQL tuning to perform well.

Correct Answer: E

Question 5

Which two statements are true about the timer service of a business component container?

A. When the server is shut down,the timer is persisted automatically and becomes active again when the server is restarted.

B. When a transaction is rolled back, the timer creation within the transaction is also rolled back.

C. Timed notifications for all types of session beans can be scheduled by using this service.

D. When stateful session bean instance is removed, the container detaches the timers associated with the instance and allocates them to the new instance.

E. Each instance of messagedriven beans has unique timers.

Correct Answer: A,B

Question 6

Your development team wants to use Google Guice. A previous architect assigned this request a low priority, citing the complexity of integration and no compelling benefits statements from the requesting team.
The team claims that their colleagues have achieved the integration using a pattern. This pattern reduced the level of difficulty and risk and did not require vendor support.
Which pattern fits this description?

A. DependencyInjectionExtender

B. Service Starter

C. Context Holder

D. Bean Locator

Correct Answer: A

Explanation: Only visible for TestSimulate members. You can sign-up / login (it's free).

Question 7

StockTeller is a Java-based application designed to retrieve the current market for a portfolio of publicly listed stocks. You have been tasked to design a bolt on module for StockTeller called EBroker, a Java E-based online application that needs to asynchronously communicate with StockTeller to retrieve market prices for securities in a secure manner.
Which web service technology would you choose to integrate StockTeller into the EBroker application?

A. JAX-RPC using HTTP

B. JAX-WS using HTTP

C. JAX-RS using HTTPS

D. JAX-WS using HTTPS

Correct Answer: D

Question 8

Which three statements are true about inheritance?

A. Inheritance promotes encapsulation better than interfaces.

B. It should be possible to substitute the derived class for its base class.

C. Inheritance allows you to modify the behavior of objects.

D. The derived class must override all methods of the base class.

Correct Answer: A,B,C

Question 9

What are two consequences of using the Composite View pattern?

A. Restricts all sub views to have a consistent view technology

B. Improves performance

C. Allows tables to be reused in multiple locations

D. Avoids duplicate content

E. Forces a whole-part dependency

Correct Answer: C,D

Welcome to TestSimulate

Oracle Java EE 6 Enterprise Architect Certified Master (1Z0-807) Free Practice Test