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NO.1 A developer maps the abstract entity class Account with concrete entity suB. classes
CreditCardAccount and SavingsAccount using the single table per class hierarchy strategy. Which two
statements are true? (Choose two.)
A. Instances of CreditCardAccount and SavingsAccount are stored in the same table.
B. All columns that correspond to fields declared in Account must be defined as nullable in the database.
C. The fields declared in Account are stored in a different table than the ones declared in
CreditCardAccount and SavingsAccount.
D. All columns that correspond to fields declared in CreditCardAccount or SavingsAccount must be
defined as nullable in the database.
Answer: A,D
Oracle認証試験 1Z0-861 1Z0-861種類 1Z0-861 1Z0-861書籍
NO.2 A developer is creating an entity which is mapped to a table that has a primary key constraint defined on
two character columns and would like to use mapping defaults as much as possible to simplify the code.
Which two mapping options can be chosen.? (Choose two.)
A. Use an @ld property that constructs a private field as a concatenation of two columns.
B. Use a separate class to map those two columns and use an @ldClass annotation to denote the primary
key field or property in the entity.
C. Use a separate @Embeddable class to map those two columns and use an @Embeddedld annotation
to denote a single primary key field or property in the entity.
D. Use a separate @Embeddable class to map those two columns and add two fields or
properties to the entity, each marked as @ld, that correspond to the fields or properties in the embeddable
class.
E. Use a separate class to map those two columns. Specify that class using @ldClass annotation on the
entity class. Add two fields or properties to the entity, each marked as @ld, that correspond to the fields or
properties in that separate class.
Answer: C,E
Oracle 1Z0-861難易度 1Z0-861取得
NO.3 A stateful session bean contains a number of instance variables. The types of instance variables A and
B are NOT serializable. Instance variable B is a complex type which is populated by many business calls,
and can, therefore, NOT be refilled by the client without starting all over. A helper instance variable C is
defined as having a Serializable type, and can hold all the information which is in variable B. For example,
B is of type XML-DOM Tree and C of type String. Which two solutions, when combined, maintain the state
of the session bean over a passivation and activation by the container? (Choose two.)
A. The value of helper variable C is used to create the value of instance variable B in the beans no-arg
constructor.
B. The value of helper variable C is used to create the value of instance variable B in a
@PostCreate annotated method.
C. The value of helper variable C is used to create the value of instance variable B in a
@PostActivate annotated method
D. Instance variable A must be made null and instance variable B must be converted to a
Serializable type and assigned to another instance variable in a @PreDestroy annotated method.
E. Instance variable A must be defined transient. Instance variable B must be converted to a Serializable
type, set to null, and assigned to the instance variable C in a @PrePassivate annotated method.
Answer: C,E
Oracle問題集 1Z0-861スクール 1Z0-861ガイド 1Z0-861取得 1Z0-861練習
NO.4 A developer wants to create a business interface for both local and remote usage. For
performance reasons the remote interface should NOT be called by a client in the same JVM.
Which statement is required to accomplish this, assuming there is no deployment descriptor?
A. The business methods are defined in one interface which must be annotated with both @Local and
@Remote.
B. The business methods are defined twice in one interface. One method is annotated with @Local and
the other is annotated with @Remote.
C. The business methods are defined in a common interface by two other interfaces which are annotated
with @Local and @Remote respectively. The bean implements the super interface.
D. The business methods are defined in a common interface. It is extended by two interfaces, annotated
with @Local and .Remote respectively. Both interfaces are implemented by the bean class.
Answer: D
Oracle教本 1Z0-861合格率 1Z0-861 1Z0-861 1Z0-861模擬 1Z0-861割引
NO.5 Which two are true about EJB 3.0 exception classes? (Choose two.)
A. The javax.ejb.NoSuchEJBException is an application exception.
B. The javax.ejb.EJBException extends java.lang.RuntimeException.
C. The javax.ejb.EJBTransactionRequiredException is an application exception. D. An application
exception must NOT be a subclass of java.rmi.RemoteException.
E. The javax.ejb.EJBTransactionRolledbackException is an application exception.
F. Any subclass of java.lang.RuntimeException is always considered a system exception.
Answer: B,D
Oracle 1Z0-861科目 1Z0-861合格点 1Z0-861 1Z0-861
NO.6 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 isCallerlnRole method on an injected SessionContext to determine the required information.
D. Ensure that the breakout method is appropriately annotated with @RolesAllowed.
Answer: B
Oracle 1Z0-861ふりーく 1Z0-861問題集
NO.7 The Java Persistent API defines certain rules for persistent entities. These rules are required by the
persistent provider to manage entities at runtime.
Which statement is correct, assuming NO mapping descriptor is used?
A. Entities must extend a persistent base class.
B. Entities must implement the interface PersistentEntity to be managed by the persistent
provider.
C. A field without a transient modifier must be annotated as @Persistent to be stored in the database.
D. A field without a transient modifier must be annotated as @Transientto NOT be stored in the database.
Answer: D
Oracle合格率 1Z0-861認定資格 1Z0-861割引
NO.8 A developer writes an enterprise application and packages it into an .ear file. The application contains
two persistence units defined at the .ear level with persistence unit names FooPU and BarPU. The
application also contains an ejB. jar with one stateless session bean. Which code, when added to the
stateless session bean class, injects an EntityManagerFactory at runtime?
A. @PersistenceUnit
private EntityManagerFactory emf;
B. @PersistenceContext
private EntityManagerFactory emf;
C. @PersistenceUnit(unitName="BarPU")
private EntityManagerFactory emf;
D. @Resource(name="BarPU",type=EntityManagerFactory.class)
private EntityManagerFactory emf;
Answer: C
Oracle資格 1Z0-861教材 1Z0-861入門
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