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SCBCD 310-092 成功の楽園にどうやって行きますか。

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310-092 PDF DEMO:

QUESTION NO: 1
Your application uses the Java Persistence API to access a database. This application must reject adding an instance to the database if it does NOT pass validation tests for values of two persistence properties. The database contains some data that will NOT pass such validation. Only the new records must be validated. Which option will achieve this behavior?
A.Add validation logic to the setter methods for each property.
B.Add the PrePersist callback method with all of the validation logic.
C.Add the PostPersist callback method with all of the validation logic.
D.Add PrePersist and PreUpdate callback methods with all of the validation logic.
Correct:B

QUESTION NO: 2
A developer writes two session beans which cooperate. The first session bean, ShoppingCart, collects orders and is implemented as a stateful session bean. The second session bean,
CalculateDiscount, is implemented as a stateless session bean and runs on a different server.
ShoppingCart contains the method getTotalPrice, which calculates the total price of the order in the ShoppingCart, including discounts. Discounts are calculated by CalculateDiscount using the information on the ShoppingCart bean, combined with data from a database. Which scenario can accomplish this?
A.The CalculateDiscount offers a method calculate which is invoked by the ShoppingCart bean passing the this reference.
B.The CalculateDiscount offers a method calculate which is invoked by the ShoppingCart bean.
CalculateDiscount accesses the ShoppingCart instance by JNDI lookup.
C.The CalculateDiscount offers a method calculate which is invoked by the ShoppingCart bean passing its reference obtained from the SessionContext.getBusinessObject method.
D.The CalculateDiscount offers a method calculate which is invoked by the ShoppingCart bean.
CalculateDiscount accesses the state of ShoppingCart by dependency injection.
Correct:C

QUESTION NO: 3
XYZ Software develops business components using both the EJB 2.1 and EJB 3.0 APIs. Some customers are reluctant to completely migrate to the EJB 3.0 model, but are willing to have EJB
2.1 session beans invoke EJB 3.0 session beans. How should XYZ Software enhance these components to meet this customer requirement?
A.Use @EJB to inject a reference to the EJB 3.0 business interface into the EJB 2.1 bean class.
B.Use in ejb-jar.xml for the EJB 2.1 bean to declare a reference to the EJB 3.0 business interface.
C.Add an EJB 3.0-style business interface to EJB 2.1 beans to achieve interoperability between EJB 2.1 and EJB 3.0 beans.
D.Use @RemoteHome and @LocalHome to adapt EJB 3.0 beans so that EJB 2.1 beans can look up the adapted home interfaces using JNDI.
Correct:D

QUESTION NO: 4
Bean Provider has been asked to write a stateless session bean, MyBean with a single method breakout. A System Administrator guarantees that all clients accessing the bean will be identified by mutual SSL authentication. The Bean Provider's task is to ensure that breakout always logs identity information of the client that invoked it. Which solution would satisfy this requirement?
A.Access the identity information in the X.509 certificate used to authenticate the user from within breakout.
B.Use the getCallerPrincipal method on an injected SessionContext to determine the required information.
C.Use the isCallerInRole method on an injected SessionContext to determine the required information.
D.Ensure that the breakout method is appropriately annotated with @RolesAllowed.
Correct:B

QUESTION NO: 5
The Java Persistence API defines the semantics of the remove operation and the entity lifecycle states. Which statement is true when the remove method is invoked on an entity X?
A.If X is a removed entity it becomes managed.
B.If X is a new entity it will be removed from the database.
C.The remove method is always cascaded to related entities.
D.If X is a detached entity an IllegalArgumentException will be thrown.
Correct:D

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Updated: May 26, 2022