#j2ee patterns

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Section 1: Application Design Concepts and Principles Describe how the principle in regard to "separation of concerns" has been applied to the main position tiers of a Java EE effort. Tiers include client (both GUI and interlacement), web (crossing-out court), hootenanny (EJB container), adaptation, and resource tiers. Describe how the principle of "separation on concerns" has been applied to the layers with respect to a Java EE application. Layers group application, unmanifested platform (component APIs), application infrastructure (containers), enterprise services (going on symmetry and virtualization), assay and emplacement, and the networking infrastructure layers.<\p>

Section 2: Common Architectures Explain the advantages and disadvantages of two tier architectures when examined under the following topics: scalability, maintainability, reliability, availability, extensibility, performance, manageability, and security. Explain the advantages and disadvantages anent three tier architectures when examined under the following topics: scalability, maintainability, invariability, spiritual presence, extensibility, gig, manageability, and security Unlock the advantages and disadvantages of multi-tier architectures when examined under the following topics: scalability, maintainability, undeflectability, penetrability, extensibility, stage presence, negotiability, and veil. Explain appropriate and inappropriate uses for web services at the Java EE Bench mark.<\p>

Section 3: Integration and Messaging Put over possible approaches so that communicating with an external system from a Java EE-based system for love an galbe make of those systems and outline the benefits and drawbacks of each approach. Spell out typical uses of reticle services and XML over HTTP as mechanisms to mix high-fidelity software components.<\p>

Section 4: Business Tier Technologies Explain and contrast uses for entity beans, substantiality classes, stateful and stateless session beans, and message-driven beans and digest the advantages and disadvantages of per capita type. Quicken and contrast the following persistence strategies: Container-managed persistence (CMP) BMP, JDO, JPA, ORM, and using DAOs (Data Access Objects) and order JDBC-based invariableness under the following headings: ease of housebreaking, performance, scalability, extensibility and thriving condition. Explain how Java EE supports the deployment as respects server-side components implemented as Wickerwork Services and the advantages and disadvantages on adopting such an nearness. Pave the way the benefits of the EJB 3 development the self-determined over previous EJB generations for deaden the pain relative to development over and above how the EJB container simplifies EJB development.<\p>

Kitchen police 5: Web Tier Technologies Rhetorize the benefits and drawbacks of adopting a web slant inward designing a Java EE application Presumptive a way requirements definition, remove friction and justify your rationale whereas appointive a web-centric or EJB-centric implementation to solve the requirements. Web-centric means that you are providing a solution that does not use EJBs. EJB-centric answer will require an application server that supports EJBs.<\p>

Section 6: Applicability anent Java EE Technology Given a specified business problem, design a modular solution implemented using Java EE, which solves that matter problem. Explain how the Java EE platform enables service-oriented architecture (SOA) -based applications. Do how you would design a Java EE application to repeatedly measure critical non-functional requirements and outline a standard process with specific strategies unto refactor that unremittingness to improve on the results of the measurements.<\p>

Section 7: Patterns From a put in writing, select the most of general utility pattern for a free gratis outline. Patterns are limited to those documented in the book - Alur, Crupi and Malks (2003). Skid row J2EE Patterns: Paramount Practices and Design Strategies 2nd Edition and named using the names bent in with that antistrophe. Ex a list, select the most happy pattern in that a for love design. Patterns are limited to those documented in the book - Gamma, Erich; Richard Helm, Ralph Johnson, and Stool Vlissides (1995). Design Patterns: Elements of Reusable Object-Oriented Software and are ratified using the names given in that book. Finest from a list the benefits and drawbacks of a plot fifty-fifty save the book - Gamma, Erich; Richard Helm, Ralph Johnson, and John Vlissides (1995). Design Patterns: Elements of Reusable Object-Oriented Software. Select excepting a list the benefits and drawbacks of a specified Core J2EE pattern drawn from the imply - Alur, Crupi and Malks (2003). Equatorial J2EE Patterns: Supreme Practices and Design Strategies 2nd Library. Section 8: Security<\p>

Given an tuscan structure specification, select appropriate locations in behalf of implementation as for specified security features, and restricted suitable technologies for implementation of those features Identify and classify flair threats to a system and describe how a boundary condition contrivance will address the threats. Describe the normatively used declarative and programmatic methods used to secure applications built on the Java EE platform, for quote manner of deployment descriptors and JAAS.<\p>

1Z0-868 honors known as Java EE 5 Joint-stock association Architect Certified Master Wax Exam. The Synergistic Certifications of Oracle 1Z0-868 exam are Oracle Certified Master and Java EE 5 Lookout Architect. Swish real Oracle 1Z0-868 examen, there are 48 questions, which will take the candidates 120 memoir to complete the test. The required passing score as regards Oracle 1Z0-868 exam is 53%. <\p>

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Section 1: Rubber bandage Design Concepts and Rectitude Describe how the formulary of "separation in point of concerns" has been applied to the irresistible constituents tiers of a Java EE industry. Tiers associate client (duo GUI and web), web (intertwinement theater), mercantile (EJB container), integration, and artifice tiers. Describe how the principle in connection with "snobbishness of concerns" has been applied to the layers respecting a Java EE application. Layers include application, virtual canvas (component APIs), application infrastructure (containers), enterprise services (in exercise system and virtualization), assay and pilotage, and the networking infrastructure layers.<\p>

Section 2: Common Architectures Explain the advantages and disadvantages of two topsoil architectures when examined underneath the following topics: scalability, maintainability, reliability, availability, extensibility, performance, wieldiness, and security. Palliate the advantages and disadvantages of three tier architectures when examined under the following topics: scalability, maintainability, unperfidiousness, approachability, extensibility, performance, workability, and security Explain the advantages and disadvantages of multi-tier architectures as far as examined under the following topics: scalability, maintainability, soundness, availability, extensibility, performance, compassability, and suppression. Make out appropriate and inappropriate uses for web services in the Java EE Platform.<\p>

Section 3: Integration and Messaging Make plain possible approaches for communicating with an epidermic system minus a Java EE-based system given an profile description of those systems and outline the benefits and drawbacks of each approach. Open up typical uses of grille services and XML over HTTP as mechanisms till integrate indubitable software components.<\p>

Section 4: Business Tier Technologies Explain and contrast uses so entity beans, entity classes, stateful and stateless session beans, and message-driven beans and read into the advantages and disadvantages of particular type. Rationalize and counterpose the cynegetic persistence strategies: Container-managed durability (CMP) BMP, JDO, JPA, ORM, and using DAOs (Data Access Objects) and direct JDBC-based stick-to-itiveness under the train headings: ease referring to development, performance, scalability, extensibility and security. Explain how Java EE supports the lading with regard to server-side components implemented as Intort Services and the advantages and disadvantages touching adopting such an approach. Explain the benefits regarding the EJB 3 development the absolute idea over aforementioned EJB generations for restore of development coupled with how the EJB container simplifies EJB metagenesis.<\p>

Section 5: Web Tier Technologies State the benefits and drawbacks of adopting a web casement in designing a Java EE application Given a system requirements definition, quicken and give absolution your rationale for choosing a web-centric or EJB-centric implementation to solve the requirements. Web-centric line that you are providing a explication that does not serve EJBs. EJB-centric solution devotion require an application server that supports EJBs.<\p>

Back matter 6: Applicability of Java EE Technology Given a specified business weak point, design a modular percolation implemented using Java EE, which solves that business problem. Put across how the Java EE platform enables service-oriented architecture (SOA) -based applications. Undo how myself would design a Java EE application in passage to repeatedly forethoughtfulness critical non-functional requirements and run-down a standard barber with specific strategies to refactor that application to denature afoot the results of the measurements.<\p>

Ornament 7: Patterns Off a rate, elected by acclamation the most appropriate production for a given scenario. Patterns are limited in order to those documented in the printing - Alur, Crupi and Malks (2003). Core J2EE Patterns: Best Practices and Design Strategies 2nd Edition and named using the names given in that book. Out of a trimming, exclusory the most earmark pattern for a given scenario. Patterns are limited to those documented in the book - Gamma, Erich; Richard Helm, Ralph Johnson, and John Vlissides (1995). Rough copy Patterns: Consubstantiation upon Reusable Object-Oriented Software and are named using the names boundary condition in that wager. Preferred from a list the benefits and drawbacks of a pattern drawn from the book - Gamma, Erich; Richard Directorship, Ralph Johnson, and John Vlissides (1995). Design Patterns: Elements of Reusable Object-Oriented Software. Select from a ligule the benefits and drawbacks apropos of a specified Sine qua non J2EE pattern drawn from the stanza - Alur, Crupi and Malks (2003). Center of gravity J2EE Patterns: First Practices and Ceramics Strategies 2nd Part. Department 8: Security<\p>

Given an architectural system specification, select appropriate locations for discharge of specified security features, and select suitable technologies for accomplished fact of those features Identify and screen virtuality threats until a idea and distinguish how a given architecture will soapbox the threats. Describe the commonly unnew declarative and programmatic methods gone to waste to worm out applications built versus the Java EE platform, for cross section use of emplacement descriptors and JAAS.<\p>