Oracle 1Z0-574 Online Practice Questions and Exam Preparation

Oracle 1Z0-574 Online Questions & Answers

• Question 151:

  What are the two primary approaches of visualization?

  A. Server Visualization - creating multiple logical virtual machines on top of a single hardware platform
  B. Server Consolidation - abstracting the complexities of the underlying pool of servers by creating aggregated logical machines
  C. Server Management - managing the servers by using a single-point management interface
  D. Server Sprawl - leads to a disproportionate amount of physical server machines running at very low rates of usage
  B. Server Consolidation - abstracting the complexities of the underlying pool of servers by creating aggregated logical machines
  C. Server Management - managing the servers by using a single-point management interface

• Question 152:

  Data is often said to exist in one of three states:

  1.

  In motion being transmitted over a network or connection

  2.

  At rest persisted in a queue, disk, file, and so on

  3.

  In memory loaded into computer memory

  The third state, in memory, is seldom mentioned in security standards, texts and requirements. Why?

  A. Computer memory has built-in parity checking which protects against malicious alteration
  B. No one has direct access to a computer's memory, therefore it is the safest place to be.
  C. All modern computers (developed since the mid-90s) automatically store data in memory in encrypted from to help ensure confidentiality and integrity, because of this, more emphasis has been placed on raising the level of protection in the other two states.
  D. This state is often overlooked. Data in memory can easily be viewed by anyone with system administrator.
  D. This state is often overlooked. Data in memory can easily be viewed by anyone with system administrator.

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  In Memory - a term used here to describe data that is currently being processed and therefore exposed to any program, diagnostic tool, operating system command, virus, etc. that is able to access memory.

• Question 153:

  The Oracle Reference Architecture (ORA) contains both horizontal and vertical architectural layers. Which statements best describe the layers within ORA?

  A. Lavers only provide a means to partition the capabilities encompassed by ORA and have no significance.
  B. Horizontal layers are used to depict that upper layers build on the capabilities provided by lower layers
  C. Vertical layers are used to depict capabilities applied across all the horizontal layers.
  D. Horizontal layers are used to signify that the lower layers can be accessed only via the upper layers.
  E. Vertical layers are used to depict enterprise-wide capabilities, whereas horizontal layers departmental capabilities.
  F. Horizontal layers are stateful, whereas vertical layers are stateless.
  B. Horizontal layers are used to depict that upper layers build on the capabilities provided by lower layers
  C. Vertical layers are used to depict capabilities applied across all the horizontal layers.

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  B: The horizontal layers illustrate that upper layers build upon or use the capabilities of lower layers. Examples: Shared Infrastructure, Information Management, Information Assets, Application Infrastructure C:Layers depicted vertically are orthogonal to the horizontal layers and apply across the entire platform, working in conjunction with horizontal layers to provide a complete solution. Examples: Enterprise Development, Enterprise Security, Enterprise Management

  Note: In order to promote modularity and encapsulation, an architecture will usually be divided into layers. Each layer has a specific purpose and leverages technologies, standards, and products designed specifically to address that purpose.

  Layers generally build upon the layers below and provide benefits and capabilities to the layers above.

  The ORA diagram in the figure below illustrates the many aspects of enterprise computing in the form of horizontal and vertical layers

  

• Question 154:

  You need to redesign your application to improve performance. The potential solution requires the data to be kept in memory for faster access. The in-memory data requires full support for SQL with BI queries and there is no need to scale out further. Which Oracle product would you choose to implement your solution?

  A. Oracle Coherence
  B. Oracle TimesTen
  C. Oracle TUXEDO
  D. Oracle VM
  B. Oracle TimesTen

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  Oracle TimesTen In-Memory Database (TimesTen) is a full-featured, memory-optimized, relational database with persistence and recoverability. It provides applications with the instant responsiveness and very high throughput required by database-intensive applications. Deployed in the application tier, TimesTen operates on databases that fit entirely in physical memory (RAM). Applications access the TimesTen database using standard SQL interfaces. For customers with existing application data residing on the Oracle Database, TimesTen is deployed as an in-memory cache database with automatic data synchronization between TimesTen and the Oracle Database.

• Question 155:

  Which statement best describe the benefits of asset dependency tracking?

  A. Tracking the asset dependencies allows you to performiImpact analysis when changes need to occur.
  B. It is a governance mechanism to control and streamline changes to the assets.
  C. Dependency tracking improves the quality of code by ensuring 100% code coverage.
  D. Dependency tracking improves the performance by collocating related assets.
  A. Tracking the asset dependencies allows you to performiImpact analysis when changes need to occur.

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  As the number of assets grow rapidly, the interdependencies become hard to track if not managed properly. Dependency tracking is beneficial as the number of assets increases, the relationships become more complex, and the need to revise or retire assets arises. Tracking the dependencies allows us to perform impact analysis when changes need to occur. This goes both ways - one may need to understand the dependencies an asset has, if the asset needs to be changed, moved, or virtualized; or one may need to understand what assets depend on a particular resource, if that resource needs to be modified, retired, or moved.

• Question 156:

  Which of the following statements are true?

  A. The MVC pattern became very popular when the client-server architecture was in common use.
  B. MVC was developed to map to three tiers of an n-tier architecture.
  C. Federation, as applied to user interfaces, means that all security standards must only be applied at a level at which government security agencies are able to decrypt communications.
  D. Federation, as applied to user interfaces, is the concept that parts of the user interface arecreatedand controlled by an organization that is separate from the organization creating the user interface.
  E. When in a disconnected state, the Data Management capability in the client tier may act temporarily as the model allowing the user interface to function.
  F. Federation, as applied to a user interfaces, means that data must be replicated.
  A. The MVC pattern became very popular when the client-server architecture was in common use.
  D. Federation, as applied to user interfaces, is the concept that parts of the user interface arecreatedand controlled by an organization that is separate from the organization creating the user interface.

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  A: When the MVC pattern came into prominence, client-server was the system architecture de rigueur. Note: The model-view-controller (MVC) pattern separates the three major elements in the user interface; thereby providing separation of concerns which results in code that is more easily understood, reused, modified, and maintained. The three major elements in the user interface are: model, view, and controller.

  D: Whereas the MVC pattern and modular programming are relatively old concepts (at least as far as software development is concerned), federation is a relatively new concept closely related to service orientation. Applied to user interfaces, federation is the concept that parts of the user interface are created and controlled by an organization (authority) that is separate from the organization (authority) creating the user interface.

• Question 157:

  Which of the following are common management and monitoring standards available today?

  A. Simple Network Management Protocol (SNMP)
  B. Java Management Extensions (JMX)
  C. the Java EE Management specification (JSR 77)
  D. Information Technology Infrastructure Library (ITIL)
  A. Simple Network Management Protocol (SNMP)
  B. Java Management Extensions (JMX)
  C. the Java EE Management specification (JSR 77)

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  Simple Network Management Protocol (SNMP) is a well-known and popular protocol for network management.

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  Java Management Extensions (JMX) is a specification for monitoring and managing Java resources such as applications, JVM, and J2EE resources.

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  The Java EE Management specification (JSR 77) provides a standard model for managing a J2EE Platform and describes a standard data model for monitoring and managing the runtime state of any Java EE Web application server and its resources.

• Question 158:

  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.
  A. Each Technology Perspective focuses on a particular set of 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.

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  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:

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  A foundation document describing the terms, concepts, standards, principles, etc. that are important to the ETS.

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  An infrastructure document that defines a reference architecture built using the technologies pertinent to the ETS.

• Question 159:

  The Conceptual, Logical, and Product Mapping architecture views are core to the documents within the Oracle Reference Architecture (ORA) library- Which statement best describes the relationship between these three architectural views?

  A. The Conceptual view lists the concepts behind the architecture, the Logical view describes the rationale for the architecture, and the Product Mapping view Identifies the Oracle products required.
  B. The Conceptual view defines the architecture in less technical terms, the Logical view provides Increasing detail by using more technical terms, and the Product Mapping view maps Oracle products onto the Logical view.
  C. The Conceptual view is a high-level description of the architecture, the Logical view is a detailed description of the architecture, and the Product Mapping view illustrates the deployment of Oracle products.
  D. Each architecture view is designed to communicate to a specific stakeholder and there is no defined relationship between the views.
  E. Each architecture view is a description of the components within the architecture, the logical view describes the runtime interactions between the components, and the product mapping view illustrates the deployment of Oracle products.
  C. The Conceptual view is a high-level description of the architecture, the Logical view is a detailed description of the architecture, and the Product Mapping view illustrates the deployment of Oracle products.

• Question 160:

  Select the most appropriate reason why three-tier architecture is a better architectural choice than simple client-server architecture for complex enterprise applications.

  A. Three-tier architecture uses three threads to run the applications, so performance is better.
  B. Three-tier architecture combines presentation, business logic, and data processing of business logic, data, and presentation. This allows the tiers to be independently scaled to maximize the investment.
  C. Three-tier architecture combines presentation, business logic, and data processing into a single layer to eliminate network latencies.
  D. Three-tier architecture moves all processing to the client, thereby reducing the load on the server.
  B. Three-tier architecture combines presentation, business logic, and data processing of business logic, data, and presentation. This allows the tiers to be independently scaled to maximize the investment.

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  Three-tier architecture allows the data tier and middle tier to scale independently. It also allows multiple clients to share the business logic running in the middle tier. This makes distribution of the application a lot easier. Since security, transactions management, and connection management are handled in the middle tier, it gives better control of the resources. Three-tier architecture is more scalable than the simple client- server model and requires less powerful client side machines. Due to these characteristics this architecture is suitable for small to medium enterprise deployments.

  Note: Distributed programming typically falls into one of several basic architectures or categories such as Client-server, three-tier architecture, and N-tier architecture. In the three tier architecture, business logic is handled in the middle tier, presentation rendering is handled on the client and data management is handled in the backend. This architecture allows multiple clients to access centrally deployed business logic components. This allows centralized distribution and management of resources.