Oracle Oracle Certifications 1Z0-574 Questions & Answers

• Question 21:

  Which of the following is NOT a container capability?

  A. Scalability

  B. High Availability

  C. Management and Monitoring

  D. Applications

  Correct Answer: B

  Explanation:

  References:

• Question 22:

  Which statement best describes how Service-Oriented Integration (SOI) differs from traditional Enterprise Application Integration (EAI)?

  A. SOI is Just like EAI except that a service bus is used Instead of a hub or message bus.

  B. SOI is different than hub-based EAI, but is the some as EAI using a message bus.

  C. SOI uses a point to-point integration approach based on the Web Services Industry standards.

  D. SOI uses SOA Services that are separate and distinct from the applications being integrated

  E. EAI integrates applications whereas SOA integrates SOA Services.

  Correct Answer: E

  Explanation: Enterprise Application Integration (EAI) is an approach for integrating multiple applications. EAI products are built around messaging products and are deployed in either a hub-and-spoke architecture or in a bus architecture. Some argue that service-oriented integration is actually a form EAI. This is not correct. EAI is an application-oriented architecture. EAI provides the mechanism to have applications interact to share data and functionality. Service-oriented integration adds the concept (and concrete deployment) of SOA Services that are separate and distinct, with a lifecycle that is independent, from any application in the computing environment.

  References:

• Question 23:

  Which caching mode does every write to the cache cause a synchronous write to the back-end store?

  A. Refresh-Ahead Cache

  B. Write-Through Cache

  C. Write-Behind Cache

  D. Read-Through Cache

  Correct Answer: B

  Explanation:

  In a write-through cache, every write to the cache causes a synchronous write to the backend store.

  In this approach, the data is updated in the

  backend data store, then the primary cache, all within the scope of the transaction. Then the backup cache

  is also updated to maintain consistency of data.

  References:

• Question 24:

  What are the three primary delivery models of Cloud computing?

  A. Infrastructure as a Service

  B. Application as a Service

  C. Software as a Service

  D. Platform as a Service

  Correct Answer: ACD

  Explanation:

  Regarding the Cloud Provider Perspective.Many resources can be offered as services but the ORA

  conceptual model defines three broad categories of services listed below.

  *

  Infrastructure as a Service (IaaS)

  *

  Software as a Service (SaaS)

  *

  Platform as a Service (PaaS)

  References:

• Question 25:

  Service-Oriented Integration creates a catalog of SOA Services that expose capabilities from existing back-end systems. What are the three types of capabilities that the SOA Services expose?

  A. existing business processes

  B. existing management and monitoring functionality

  C. existing business functionality

  D. existing data entities

  E. existing application programming interfaces (APIs)

  Correct Answer: ACD

  Explanation: The SOA Service needs to expose process, functionality, and data that is usable in a broader context than the source of the capability was designed to meet. Therefore, creating a SOA Service usually entails some amount of aggregation, transformation, or expansion of existing capabilities provided by the source systems.

  Note on D: Each existing application contains its own data model and data formats. This proliferation of data models and data formats is exacerbated by the fact that a single enterprise entity (e.g. customer, product, order) frequently has data elements stored in multiple existing applications. To be successful at exposing existing data via SOA Services, the integration approach must manage this complexity.

  References:

• Question 26:

  Which of the following standards states that every reusable asset must contain a minimum of one manifest file and at least one artifact to be considered a valid reusable asset?

  A. OMG Reusable Asset Specification (RAS)

  B. OMG Meta Object Facility (MOF)

  C. OMG XML Metadata Interchange (XMI)

  D. OMG Systems Modeling Language (SysML)

  Correct Answer: A

  Explanation:

  A: The OMG RAS specification is a set of guidelines and recommendations about the structure, content, and descriptions of reusable software assets. It identifies some categories, or rather types or profiles and provides general guidelines on these profiles. RAS addresses the engineering elements of reuse. It attempts to reduce the friction associated with reuse transactions through consistent, standard packaging.

  References:

• Question 27:

  What is meant by cache hit rate or ratio?

  A. the percentage of times the cache was hit successfully over the total number of tries

  B. the percentage of times the cache was refreshed from the back-end database

  C. the number of servers the cache is replicated to

  D. the ratio of cache objects in a server to the total number of cache objectsin the server cluster

  Correct Answer: A

  Explanation:

  Cache hit rate or ratio: The percentage of times the cache was hit successfully over the total number of

  tries is called the hit ratio.

  References:

• Question 28:

  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.

  Correct 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. References:

• Question 29:

  Which of the following best describes the role of the Managed Target Tier within the Logical view of the Management and Monitoring architecture?

  A. contains configuration details, historical metric data and alert Information, availability Information, and product and patch inventory Information

  B. provides access to management content and operations and enables end users to access the appropriate business solution

  C. provides Management Repository and Management Engine capabilities

  D. contains the named Infrastructure components that are required to be managed and monitored

  Correct Answer: D

  Explanation:

  The Managed Target Tier contains the named infrastructure components that are required to be managed

  and monitored. It is common to utilize a combination of agent based and gateway (a.k.a. proxy) patterns to

  monitor and manage hosted and non-hosted targets.

  References:

• Question 30:

  What is the main benefit of Utility Computing?

  A. high availability

  B. better economics

  C. scalability

  D. better security

  Correct Answer: B

  Explanation:

  The focus of utility computing is the business model on which providing the computing services are based.

  The main benefit of utility computing is better economics. Corporate data centers are typically

  underutilized. Utility computing allows companies to only pay for the computing resources they need, when

  they need them. Utility computing is very similar to public cloud computing, except perhaps it doesn't

  necessarily imply self-service, elastic capacity, or multi-tenancy. It does imply pay-per-use.

  Note: Utility computing is an on-demand approach that combines outsourced computing resources and

  infrastructure management with a usage-based payment structure. It covers the packaging of computing

  resources, such as computation and storage, as a metered service similar to a physical public utility. Utility

  computing has the advantage of a low or no initial cost to acquire hardware as computational resources

  are essentially rented.

  References: