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Q51. The Oracle Reference Architecture (ORA) includes the concept of Technology Perspectives. Which statements are true concerning ORA and Technology Perspectives?
A. Each Technology Perspective focuses on a particular set of products and technology.
B. A Technology Perspectiveincludesboth reference architecture views as well as practical guidance and approaches for successfully implementing the changes required to embrace the products and technology.
C. The Technology Perspectives can be used individually or in combinations, for example, SOA with BI.
D. The Technology Perspectives can be used individually or in combinations. When used in combinations, the SOA Technology Perspective must be included.
E. Each Technology Perspective is part of ORA and is part of an Enterprise Technology Strategy;
i.e. a Technology Perspective is the connection between ORA and an Enterprise Technology.
Answer: A,C,D,E
Explanation: Technology perspectives extend the core material by adding the unique capabilities,
components, standards, and approaches that a specific technology strategy offers.(A)
SOA, BPM, EPM/BI, and EDA are examples of perspectives for ORA.
Each technology strategy presents unique requirements to architecture that includes specific capabilities, principles, components, technologies, standards, etc. Rather than create another reference architecture for each strategy, ORA was designed to be extensible to incorporate new computing strategies as they emerge in the industry.
In order to present the reference architecture in the most effective manner, each new technology strategy adds a perspective to ORA. This enables the reference architecture to evolve holistically. New computing strategies extend the core material, providing further insight and detail as needed.
A perspective extends the ORA core collateral by providing views, principles, patterns, and guidelines that are significant to that technology domain yet cohesive with the overall ORA. The perspective includes:
* A foundation document describing the terms, concepts, standards, principles, etc. that are important to the ETS.
* An infrastructure document that defines a reference architecture built using the technologies pertinent to the ETS.
Reference: IT Strategies from Oracle, An Overview, Release 3.0
Q52. Which of the following are examples of dynamic modeling?
A. Behavior Modeling
B. Interaction Modeling
C. Static Modeling
D. Data Modeling
Answer: A,B
Explanation: Static modeling focuses on capturing the instance attributes and snapshots of nodes and objects. Dynamic modeling generally refers to one or both of the following
* Behavior modeling that focuses on the internal state changes
* Interaction modeling that focuses on external collaborations.
Note: Modeling is a prime and foremost activity of the engineering process. Modeling bridges the gap between business and technology worlds through the language common to both sides.
Reference: Oracle Reference Architecture,Software Engineering, Release 3.0
Q53. Which of the following capabilities are provided by containers?
A. Transaction Support
B. Security Support
C. Thread Management
D. Business Processes
Answer: A,B,C
Explanation: Containers provide several capabilities that include the following: Transaction Support (A) Security Support (B) Scalability and Performance Thread Management (C) Data and Code Integrity Centralized Configuration Connection and Session Management Abstraction
Reference: Oracle Reference Architecture, Application Infrastructure Foundation, Release 3.0
Q54. There are various network topologies that can be used when deploying the Service-Oriented Integration architecture. One deployment option includes three networks: production network, services network and maintenance network. Which statement best describes the uses of these three networks?
A. The production networkisused for all production network traffic. The services networks is used to deploy and configure SOA Services. The maintenance network is used by the operations team to manage the infrastructure.
B. The production network provides connectivity to applications and client access to the Mediation Layer. The services network provides connectivity between the Mediation Layer and the SOA Services. The maintenance network is used by the operations team to manage the infrastructure.
C. The production network provides connectivity to applications and client access to the Mediation Layer- The services networks is used to deploy and configure SOA Services. The maintenance network is used by the operations team to manage the infrastructure.
D. The production network is used for all production network traffic. The services network provides connectivity between the Mediation Layer and the SOA Services. The maintenance network is by the operations team to manage the infrastructure.
E. The production network is used for all production network traffic. The services networks is used to deploy and configure SOA Services. The maintenance network is trusted network, providing administrator access to all hardware and software.
Answer: B
Explanation: Note: Mediation can be broadly defined as resolving the differences between two or more systems in order to integrate them seamlessly. A typical IT architecture has a variety of systems and components that are fundamentally different. A better alternative to embedding the mediation logic into each of these systems would be to provide the mediation capability in the SOA infrastructure.
Reference: Oracle Reference Architecture, SOA Infrastructure, Release 3.0
Q55. You are developing an Integration component that uses customer data. The source system defines customer data in a different format than expected. Which of the following options best describes how you would develop the component?
A. Create an object representation of customer data and use itin the component.
B. Externalize the data transformation by mapping the source data format to a canonical data format.
C. The data formats are different, so it is not possible to develop the component.
D. Write data from the source system into a database and read it back in the expected format.
Answer: A
Explanation:
Note: It is quite common to encounter use cases that require transformation of information from one format to another, especially in the area of enterprise integration. Source systems and target systems may use very different representations of data and in some cases, a canonical data model might be used as a common intermediate format. In some cases, the transformation is a simple field-to-field mapping whereas in other cases it is a complex manipulation and conversion of data. It should be possible to visually map the source and target representations with the ability to enrich the elements to support both simple and complex data transformations.
Q56. Which of the following are the key drivers for Grid computing?
A. Improved server utilization - Grid computing allows companies to lower costs through the efficient use of resources.
B. Better agility and flexibility - Businesses experience constant change and the underlying IT Infrastructure should be agile enough to support that kind of change.
C. OpEx model - Enterprises require pay-as-you-go services to reduce the dependency on capital expenditure and take advantage of the benefits of operational expenditure.
D. Lower Initial cost-There is a need to reduce the Initial investment at the cost of an increased operational cost.
Answer: A,B,D
Explanation: Using a grid computing architecture, organizations can quickly and easily create a large-scale computing infrastructure from inexpensive, off-the-shelf components (D). Other benefits of grid computing include
* Quick response to volatile business needs (B)
* Real-time responsiveness to dynamic workloads
* Predictable IT service levels
* Reduced costs as a result of improved efficiency and smarter capacity planning (A)
Note: One way to think about grid computing is as the virtualization and pooling of IT resources—compute power, storage, network capacity, and so on—into a single set of shared services thatcan be provisioned or distributed, andthen redistributed as needed. As workloads fluctuate during the course of a month, week, or even through a single day, the grid computing infrastructure analyzes the demand for resources in real time and adjusts the supply accordingly.
Grid computing operates on three basic technology principles: Standardize hardware and software components to reduce incompatibility and simplify configuration and deployment; virtualize IT resources by pooling hardware and software into shared resources; and automate systems management, including resource provisioning and monitoring.
Grid computing operates on these technology principles:
* Standardization.
* Virtualization.
* Automation.
Reference: Oracle Grid Computing, White Paper
Q57. Which of the following is not a characteristic of Cloud computing?
A. multi-tenancy
B. elastic scaling
C. pay-for-use pricing
D. manual provisioning
Answer: D
Reference: Oracle Reference Architecture, Cloud Foundation Architecture, Release 3.0
Q58. Which of the following are strategies for alert management with Oracle Enterprise Manager?
A. controlling the volume of alerts
B. removing unwanted alerts
C. centralized filtering of alerts
D. automating fix for common alerts
Answer: B,D
Explanation: B: New in Enterprise Manager 10g Release 5 (10.2.0.5)
Alert Management Enhancements: Administrators can better manage their log-based alerts (e.g., alert log alerts) by setting duration-based notification rules that clear such alerts on a periodic basis, or by using new EMCLI verbs that support bulk clearing of such alerts.
D: New in Enterprise Manager 10g Release 5 (10.2.0.5)
Alert Management Enhancements: On-demand evaluation of alerts allow administrators to quickly verify whether the fixes implemented for alerts result in clearing of the alert.
Note: Advanced alert management
Q59. Which statement best describes the relationship between the Oracle Reference Architecture (ORA) and Service-Oriented Architecture (SOA)?
A. ORAincludes many different technology perspectives (for example, BPM, BI) Including SOA. The SOA perspective provides a view of ORA focused on the products and technology applicable to SOA.
B. ORA embraces service orientation as a core tenet to consistently and uniformly deal with the complexity of a heterogeneous computing environment common to enterprise IT.
C. ORA embraces SOA as a core tenet; therefore, adopting ORA means that SOAis adopted as well.
D. ORA is a reference architecture based on architecture principles and best practices. SOA is a marketing term that has become widely and ambiguously used within the industry.
E. SOAis an architectural approach that isproduct- and vendor-independent,ORA is essentially a SOA implemented using Oracle products and technology.
Answer: B
Explanation: ORA does have a special relationship with SOA. ORA embraces service-orientation as a core tenet to improve agility, rationalize functions and data, and promote reuse in an effective manner. The entire strategy of SOA is not core to ORA (not C), but the concept of exposing data and functionality as interoperable SOA Services is core to ORA. ORA must provide interoperability across all Oracle products and must also effectively deal with the heterogeneity that exists in IT environments. SOA Services provide a clean, consistent approach to deal with both of these complexities. This is the reason that ORA includes service orientation as a core tenet.
Stated as an architecture principle, this becomes:
* The architecture embraces services as the primary mechanism for interoperability and integration.
Reference: Oracle Reference Architectureand Service Orientation, Release 3.0
Q60. Which statement best describes the mapping of User Interaction logical architecture layers to deployment tiers?
A. The web tier and the application tier together map to the service layer, while the dates tier is an example of the resource layer component.
B. The web tier and the application tier together map to the client layer, while the data tier is an example of the resource layer component.
C. The web tier fulfills the majority of the client layer capabilities; the application tier maps to the service layer; the data tier is an example of the resource layer component.
D. The Logical view and Deployment view of the User Interaction architecture do not map effectively from one to the other because other intermediate views are needed.
Answer: D
Explanation:
Note: There are a myriad of ways that the architecture can be deployed within an enterprise.
The types and number of physical servers is determined based on company preferences and expected computational load. The actual products that are used to realize the architecture may also have significant impact on the deployment choices.
Reference: Oracle Reference Architecture, User Interaction, Release 3.0