Java EE 6 Enterprise Architect Certified Master
Exam Number: 1Z0-807 / 1Z0-807
Duration: 150 minutes
Associated Certifications: Oracle Certified Master, Java EE 6 Enterprise Architect
Number of Questions: 60
Exam Product Version: Java EE,
Passing Score: 71%
Exam Price: US$ 150
Validated Against:
This exam has been validated against Java EE 6.
format: Multiple Choice
Recommended Training
- Architect Enterprise Applications with Java EE
- Java Design Patterns
- Object-Oriented Analysis and Design Using UML
- Developing Applications for the Java EE 6 Platform
-
References for Exam 807: Oracle Certified Master, Java EE 6 Enterprise Architect
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Oracle Courseware:
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Other Documentation:
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Real World Java EE Patterns-Rethinking Best Practices by Adam Bien
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TOPICS
Application Design Concepts and Principles
- Identify the effects of an object-oriented approach to system design including the effect of encapsulation, inheritance, and use of interfaces.
- Identify how the Separation of Concerns principle applies to the component model of a Java EE application; including client, the web and business component containers, and the integration and resource layers.
- Identify the correct interpretation of Separation of Concerns as it applies to the Java EE service layers, including component APIs, run-time containers, the operating system, and hardware resources.
- Identify non-functional and quality-of-service requirements that influence application design, including trade-offs in performance, availability, and serviceability.
Common Architectures
- Identify the appropriate strategy for deploying client applications to desktop and mobile platforms, the principles for designing a user interface and the benefits of applying client-tier patterns.
- Identify best practices for exception handling, logging, and business tier patterns.
- Identify design patterns that address specific challenges in the web tier, including authentication, authorization, and scaling and clustering to meet demand.
- Identify Java EE technologies, including JMS, JCA and Web Services, and design patterns that address specific challenges in enterprise integration.
- Identify the challenges in integrating enterprise resources, the Java EE technologies that address them (including JPA and JDBC), and the communication protocols that support tier-to-tier communication (including RMI, IIOP, and CORBA).
Integration and Messaging
- Identify the APIs available for a Java EE technology-based system to communicating with external resources, including JPA, JDBC, RMI, Web Services, JMS, and JCA. Outline the benefits and drawbacks of each approach.
- Describe the technologies used to integrate business components with Web Services, including XML over HTTP, JSON, SOAP and REST.
- Identify and detail the technologies used to integrate business components with external resources, including JMS and JCA.
- Identify how a Service Oriented Architecture (SOA) facilitates system integration and best practices.
Business Tier Technologies
- Identify the correct EJB technology to apply for a given scenario, including entity classes, session beans, message-driven beans, timers, interceptors, and POJOs.
- Identify benefits and drawbacks of different persistence technologies such as BMP, CMP, and JPA, including ease of development, performance, scalability, extensibility, and security.
- Identify the benefits and drawbacks of implementing Web Services in the EJB component container.
- Select the appropriate use of JPA and JPQL in a given scenario.
Web Tier Technologies
- Identify the benefits and drawbacks of using URL rewriting and cookies to manage HTTP session state.
- Identify appropriate uses for JSP and Servlet technology, and JavaServer Faces in a given Java EE application.
- Identify the benefits of using an EJB container with a web container instead of a web container alone.
- Identify the differences between client pull and server push architectures.
- Identify the benefits and drawbacks of using a browser to access asynchronous, lightweight processes on the server.
Design Patterns
- Demonstrate knowledge of Java EE design patterns including: Service Starter, Singleton, Bean Locator, Resource Binder, Dependency Injection, Payload Extractor, Context Holder, and Thread Tracker.
- Select an appropriate pattern for a given application challenge from the following: Facade, Strategy, Observer, Composite, and Abstract Factory.
- Identify a design pattern, using a description of its features, from the following: Facade, Strategy, Observer, Composite, and Abstract Factory.
- Identify the use of the law of leaky abstractions or a specific anti-pattern in a given scenario.
Security
- Identify elements of the security model in the Java SE environment for remote clients, including Web Start, applets and the role of the SecurityManager class.
- Select appropriate locations to implement Java EE security technologies or features in a UML component and deployment diagram.
- Classify security threats to an enterprise application select measures an architect can propose to mitigate them.
- Identify techniques associated with declarative and programmatic security, including the use of annotations, deployment descriptors, and JAAS technology.
- Identify the security technologies that apply to an application’s code, messaging and transport layers
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Exam Code:
1Z0-807Exam Name: Java Enterprise Edition 6 Enterprise Architect Certified Master Exam (Step 1 of 3)
One year free update, No help, Full refund!
1Z0-807 Training online Total Q&A: 90 Questions and Answers
Last Update: 03-19,2015
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NO.1 You are the architect at ACME, a large a large global retailer of
festival and holiday accessories.
ACME wants to launch a new shopping portal
for the holiday shopping session, allowing two
months from project inception
to going live. The portal must contain in-house and third-party stock
to
attack customers.
Fast response times are also critical so users remain
engaged and sticky to the portal.
What would you recommend to the ACME
project team to deliver this project?
A. Access all third party content using
JSONP to dynamically load it from the browser.
B. Access as much content with
bulk-loading as possible; use JSONP to access the remainder.
C. Access all
content regardless of source using the HTML 5 XML parsing capabilities of
the
browser
D. Access all third party content using JSON to dynamically
load it from the browser.
Answer: D
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NO.2 Your company provides
a marketplace for industrial chemicals. You are required to
offer
accurate
pricing and quantities to all marketplace
users.
Marketplace users are globally distributed.
What is the most
appropriate technology to use to satisfy this requirement?
A. Server-side
distribution using JAX-WS
B. Client-side polling using JAX-RPC
C. Web
services using REST
D. An enterprise messaging system
Answer: C
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NO.3 You are the architect of a web application that
uses javaServer Faces (JSF) as a presentation
tier
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.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 only works with well-known data models.
B.
JPA may be able to model every table as a class.
C. JPA could render code
that requires extensive SQL tuning to perform well.
D. JPA’s query language
relies on a container to manage the persistence layer.
E. JPA doesn’t
provides ACID semantics.
Answer: D
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NO.5 You are the operations architect for a large
online retailer. During peak times, your set of
monitored applications
exhibits non-reproducible errors. The data center is growing at 50%
per
annum, while your team headcount remains constant.
Which method would
you use to implement an affective monitoring strategy?
A. Use the Visitor
pattern to collect per-JVM statistics and store them centrally.
B. Use the
Strategy pattern to encapsulate collection logic for each JVM.
C. Use the
Thread Tracker to monitor the JVMs directly.
D. Use the Observer pattern to
monitor each JVM directly.
Answer: B
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NO.6 Which two statements are true about security
strategies at the message level?
A. Messages are secured during transport and
after arrival at their destination
B. Each portion of a compound message is
secured.
C. SSL is required to ensure authenticity, integrity, and
confidentiality.
D. Message attachments are secured without the need for a
dedicated API.
E. Security is dependent on the application environment or the
transport protocol.
Answer: C,E
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NO.7 Your company is
creating a Java EE corporate wide workflow system in winch
significant
internal
business events are consumed by multiple
applications. Due to multi-year development plans,
many of these applications
do not exist yet, even at the design stage. IT has defined standard
data
formats for these events in the form of small XML documents. Also, the
rules for how an
application filters and processes events are not fixed In
advance and can change over the life or
the application.
Which combination
of technologies is best for distributing and consuming these events
throughout
the company?
A. Relational database and JDBC
B. HTTP client
library and servlets
C. Remote Method Invocation (RMI) and stateless session
beans
D. Java Message Service (JMS) topics and message-driven beans
E. JMS
queues and message-driven beans
Answer: D
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NO.8 A successful web application is used by over two
hundred thousand users. Due to this
substantial
load, the database is over
bridged and fails frequently. All data, included critical user records
and
temporary session data, is stored in the database. Because of resource
constraints, a new
database system cannot be installed.
Which change will
reduce the load on the database?
A. Creating more entity beans to optimize
interaction wild the database
B. Refactoring the web application to use DAOs
to communicate with the database
C. Refactoring the web application to store
temporary session data on the web servers
D. Adding more web servers to the
web tier to distribute the load and reduce the number of
transactions on the
database.
Answer: C
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