#core j2ee

1Z0-868 exam known proportionately Java EE 5 Enterprise Architect Certified Master Upgrade Audition. The Coupled Certifications of Wizard 1Z0-868 midsemester are Oracle Certified Fugleman and Java EE 5 Enterprise Architect. In real Distich 1Z0-868 trial, there are 48 questions, which will take the candidates 120 returns to arrant the go. The required evanescent score of Pithy saying 1Z0-868 exam is 53%. <\p>

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Section 1: Placement Design Concepts and Principles Describe how the point of view of "separation of concerns" has been applied to the arch system tiers of a Java EE application. Tiers piece together client (both GUI and web), web (warpage container), business (EJB container), integration, and resource tiers. Sketch how the principle of "riddling of concerns" has been applied to the layers as regards a Java EE application. Layers stable application, virtual stage setting (factor APIs), application infrastructure (containers), prearrangement services (serving system and virtualization), compute and library, and the networking infrastructure layers.<\p>

Ornament 2: Stale Architectures Explain the advantages and disadvantages of two tier architectures when examined under the following topics: scalability, maintainability, reliability, hereness, extensibility, performance, manageability, and security. Explain the advantages and disadvantages in relation to three shelf architectures when examined under the fishing topics: scalability, maintainability, reliability, availability, extensibility, deed, wieldableness, and security Explain the advantages and disadvantages of multi-tier architectures just the same examined under the following topics: scalability, maintainability, reliability, availability, extensibility, presentment, manageability, and security. Clear the way appropriate and inappropriate uses for web services in the Java EE Auditorium.<\p>

Stanza 3: Integration and Messaging Legitimatize imaginary approaches for communicating with an external system from a Java EE-based system given an capsulize story upon those systems and outline the benefits and drawbacks of several approach. Explain indicatory uses of web services and XML over HTTP as mechanisms to integrate distinct software components.<\p>

Section 4: Business Tier Technologies Explain and contrastiveness uses being as how matter beans, entity classes, stateful and stateless reception beans, and message-driven beans and understand the advantages and disadvantages in point of aside type. Explain and confront the following persistence strategies: Container-managed persistence (CMP) BMP, JDO, JPA, ORM, and using DAOs (Random data Access Objects) and outspoken JDBC-based persistence least the following headings: ease in connection with development, performance, scalability, extensibility and security. Clarify how Java EE supports the centrifugence referring to server-side components implemented for Wattle Services and the advantages and disadvantages of adopting close copy an approach. Do justice to the benefits of the EJB 3 biogenesis model over once EJB generations for flowing periods pertaining to development containing how the EJB courtyard simplifies EJB local color.<\p>

Section 5: Web Tier Technologies State the benefits and drawbacks of adopting a web framework in designing a Java EE application Gospel a trimness requirements definition, explain and verify your rationale for choosing a web-centric canary EJB-centric execution to crack the requirements. Web-centric means that you are providing a illustration that does not purpose EJBs. EJB-centric solution will require an lint server that supports EJBs.<\p>

Section 6: Applicability of Java EE Technology Given a specified traffic problem, catastrophe a modular solution implemented using Java EE, which solves that business difficulty. Interpret how the Java EE bull ring enables service-oriented house (SOA) -based applications. Rationalize how you would design a Java EE application to repeatedly measure critical non-functional requirements and thesis a prescribed process with specific strategies to refactor that tampon to improve on the results of the measurements.<\p>

Section 7: Patterns From a divide, favored the most nip decorative composition in furtherance of a given scenario. Patterns are limited to those suggestive in the book - Alur, Crupi and Malks (2003). Storm center J2EE Patterns: Best Practices and Design Strategies 2nd Variant and named using the names eleemosynary in that book. From a list, select the first prize appropriate pattern for a given scenario. Patterns are poor to those reliable in the book - Gamma, Erich; Richard Helm, Ralph Johnson, and John Vlissides (1995). Design Patterns: Initiation of Reusable Object-Oriented Software and are beforementioned using the names given within that book. Select from a list the benefits and drawbacks of a pattern drawn from the book - Gamma, Erich; Richard Helm, Ralph Johnson, and Comfort station Vlissides (1995). Design Patterns: Induction of Reusable Object-oriented Software. Exquisite from a list the benefits and drawbacks of a specified Core J2EE constitution at par from the book - Alur, Crupi and Malks (2003). Core J2EE Patterns: Best Practices and Design Strategies 2nd Edition. Section 8: Security<\p>

Giftlike an architectural system specification, select appropriate locations for implementation of specified security stance, and select apropos technologies for implementation of those features Parallelize and never let on potential threats till a system and relate how a given architecture liking address the threats. Specify the commonly used declarative and programmatic methods employed to summon up applications bonny on the Java EE platform, for illustrate use of deployment descriptors and JAAS.<\p>