Our own Oracle engineers will almost always be looking for a method to understand the newest 1Z0-868 online questions. You are able to obtain the newest 1Z0-868 dumps upon our own Testking website. All of us not really only offer 1Z0-868 pdf file tests but the computer software version. Testking 1Z0-868 check motor creates a simulators from the environment once the 1Z0-868 pops up, offers a fantastic chance to exercise the particular Oracle check communicative environment. According to your test planning, you can choose any kind of 1Z0-868 version to study flexibility. Passing 1Z0-868 test will end up more standard quicker simply by researching Oracle 1Z0-868 exercise tests.
2021 Jul 1Z0-868 test engine
Q41. A brokerage firm hired you to evaluate a re-architected CPU-bound application they use in-house to do market forecasting. This application is currently architected using a single business tier, where complex algorithms are used to process large amounts of data to forecast market trends. The current machine cannot be scaled vertically any further. A prototype was built, in which the business tier was split into two tiers, where one depends on services provided by the other. They were then deployed to two servers for testing. The prototype exhibited better scalability. Which statement would explain this result?
A. The applications deployed were simpler.
B. There were more resources available to process any one request.
C. There was additional network traffic between the two business tiers of the application.
D. The business model was simplified by partitioning it into tiers with well-defined limited interactions.
Answer: B
Q42. Which three are parts of a SOAP message? (Choose three.)
A. SOAP body
B. SOAP endpoint
C. SOAP headers
D. SOAP handlers E. SOAP attachments
Answer: A,C,E
Q43. Which three statements are guaranteed to be true about an ORM-centric approach to data persistence, regardless of the specific implementation chosen? (Choose three.)
A. ORM implementations can be supported by tool vendors to improve developer productivity.
B. ORM implementations typically trade off a small decrease in raw performance in return for greatly improved developer productivity.
C. ORM implementations can optimize persistence strategies to scale in both single (one server) and clustered (multiple servers) scenarios.
D. ORM implementations provide the same level of data access and manipulation semantics, as provided by accessing the underlying datastore directly.
E. ORM frameworks are verifiably correct in applying ACID (atomicity, consistency, isolation, durability) to database access, which is an advantage over JDBC.
Answer: A,B,C
Q44. Which three statements about the Visitor pattern are true? (Choose three.)
A. It is possible to provide a unified interface to a set of interfaces.
B. It has an object structure that contains many classes of objects with differing interfaces.
C. It has an object structure that contains many classes of objects with the same interfaces.
D. Many distinct and unrelated operations need to be performed on objects in an object structure.
E. It is possible to define new operations over an object structure, but the classes in the object structure rarely change.
F. It is possible to define new operations over an object structure, but the classes in the object structure frequently change.
Answer: B,D,E
Q45. As the architect charged with refactoring an existing system, you have determined that the interactions between objects in the existing system are too complex and that the objects are tightly coupled. Furthermore, due to the coupling, additional functionality would require the modification of many objects in the system. Which pattern can fix this problem?
A. Facade B. Mediator C. Template D. Prototype E. Command
F. Abstraction
Answer: B
Rebirth 1Z0-868 download:
Q46. What are two capabilities of the Abstract Factory pattern? (Choose two.)
A. creates whole-part hierarchies
B. creates families of related objects
C. enforces dependencies between concrete classes
D. specifies the types of objects to create using a sample instance
E. separates the construction of a complex object from its representation
Answer: B,C
Q47. You are architecting an online ordering application with these requirements:
Users access the system over the Internet using HTML.
An email message is sent to the user confirming the order.
Users must log in and are validated using LDAP.
The product catalog is stored in a relational database.
All orders are logged to the internal fulfillment system.
Orders must not be lost.
Which Java EE technology should be used to send orders to the fulfillment system?
A. JNDI
B. JMS
C. JAX-WS
D. RMI-IIOP
Answer: B
Q48. A bank designed its first-generation web-based banking system around a Java technology rich client application that interacts with server-side service objects implemented as stateful session beans in a portable Java EE application. For their second-generation system, the company wants to open the architecture to other types of clients. The company is considering exposing its existing stateful session bean service as a web service. Which statement is true?
A. Session beans cannot be exposed as web services.
B. Stateful session beans cannot be exposed as web services.
C. Stateful session beans are automatically exposed as web services.
D. Stateful session beans annotated with @WebService are exposed as web services.
Answer: B
Q49. RAG DROP
Click the Task button.
Answer:
Q50. A company created its own MVC-like framework in the years before Struts and JSF. Unfortunately, the company's Front Controller has become bloated with too many features including fine-grained authorization, view dispatching, and business logic invocation. Which three patterns could be applied to reduce the complexity of this Front Controller? (Choose three.)
A. Mediator B. Command C. View Helper
D. Intercepting Filter
E. Composite View
F. Application Controller
Answer: B,D,F