Which statement about an entity instance lifecycle is correct?
A. A new entity instance is an instance with a fully populated state.
B. A detached entity instance is an instance with no persistent identity.
C. A removed entity instance is NOT associated with a persistence context.
D. A managed entity instance is the instance associated with a persistence context.
A developer implements a system in which transfers of goods are monitored. Each transfer needs a unique ID for tracking purposes. The unique ID is generated by an existing system which is also used by other applications. For perfomance reasons, the transaction that gets the unique ID should be as short as possible. The scenario is implemented in four steps which are implemented in four business methods in a CMT session bean:
1.
LcheckGoods
2.
Checks goods in a database
2.
getUniqueld Retrieve the unique ID
3.
checkAmount Checks the amount in a non-transactional system
4.
storeTransfer Stores the transfer in a database as part of the calling transaction. These methods are called by the addTransfer method of a second CMT session bean in the following order: checkGoods, getUniqueld, checkAmount, storeTransfer Assuming no other transaction-related metadata, which is the correct set of transaction attributes for the methods in the session beans?
A. 0. addTransfer REQUIRED
1.
LcheckGoods REQUIRED
2.
getUniqueldREQUIRES_NEW
3.
checkAmountsNOT_SUPPORTED
4.
storeTransferMANDATOR Y
B. 0. addTransferREQUIRED
2. LcheckGoods REQUIRED
2.
getUniqueldREQUIRED
3.
checkAmountsREQUIRED
4.
storeTransferREQUIRED
C. 0.addTransferREQUIRED
1.
LcheckGoods REQUIRED
2.
getUniqueldREQUIRES_NEW
3.
checkAmountsNEVER
4.
storeTransferMANDATOR Y
D. 0. addTransferNOT_SUPPORTED
1.
LcheckGoods REQUIRED
2.
getUniqueldREQUIRED
3.
checkAmountsNOT_SUPPORTED
4.
storeTransferMANDATORY
A developer writes client code that runs in a Java EE container and accesses an EJB 3.0 stateful session bean. Which three statements are correct? (Choose three.)
A. The client can obtain a reference to the bean's business interface through JNDI lookups.
B. The client can obtain a reference to the bean's business interface through dependency injection.
C. If the client calls a business method after the bean instance has been removed an exception will occur.
D. After obtaining a reference to the bean's business interface, the client must call the create method before it may call business methods.
E. After the bean instance has been passivated, the client needs to re-obtain a reference to the bean's business interface to activate the bean instance.
Which two APIs must an EJB 3.0 container make available to enterprise beans at runtime? (Choose two.)
A. TheJXTAI.1API
B. TheMIDP 2.0 API
C. The Java SE 6 API
D. The JavaSE5JNDIAPI
E. TheJavaSE5 JDBCAPI
Given this code snippet from a JMS message-driven bean class named MyMDB:
11.
public MyMDBOJ System, out. print("a "); }
12.
public void onMessage(Message m) { System, out. print("b "); }
13.
@PreDestroy
14.
public void removeQ { System, out. print("c "); } The container crashes and then restarts and then the bean class handles two messages.
Which four are possible results? (Choose four.)
A. abb
B. acbb
C. aa c bb
D. aab b c
E. a bcb c
F. ababc c
Given :
public class MyException extends Exception {}
The business interface Foo declares a method work0: I. public void work0 throws MyException;
The bean class FooBean contains the following:
10.©Stateless
II. @Remote(Foo.class)
12.
public class FooBean {
13.
public void workQ throws MyException {
14.
//do some work not shown here
15.
throw new MyException0;
16.}
Assuming there is no deployment descriptor, which statement is true when the workQ method is invoked by a client with an existing transaction context and execution reaches Line 15?
A. The container does notroll back thetransaction.
B. The clientreceives javax.ejb.EJBTransactionRequiredException.
C. The clientreceivesjavax.ejb.EJBTransactionRolledbackException.
D. Thecontainer marks the transactionforrollback by calling the EJBContext.setRollbackOnly method.
Given the following stateful session bean :
10.
@Stateful
11.
public class VideoBean implements Video {
12.
public void methodAOJ}
13.
14.
@TransactionAttribute(TransactionAttributeType. SUPPORTS)
15.
public void methodB0 {} 16.
17.
public void methodC0 {}
18.
@TransactionAttribute(TransactionAttributeType. REQUIRED) 19.
20. public void methodD0 {}
21.}
Assuming no other transaction-related metadata, which is true?
A. methodBand methodC have transaction attribute SUPPORTS, while methodD has transaction attribute REQUIRED.
B. methodAand methodChavetransaction attribute REQUIRES_NEW, while methodB has transaction attribute SUPPORTS.
C. methodC, methodD, and methodA havetransactionattribute REQUIRED, andmethod Bhastransactionattribute SUPPORTS.
D. methodB has transaction attribute SUPPORTS, methodD has transaction attribute REQUIRED, and methodAandmethodC have transaction attribute REQUIRES NEW.
A Java EE 5 application contains a session bean which uses a security role USER. A group called people is defined in an LDAP server. Which two define appropriate EJB role responsibilities? (Choose two.)
A. The deployer definesandconfigures the LDAP realm.
B. The system administratordefines and configuresthe LDAPrealm.
C. Thedeployermaps the application role USER totheLDAP group people.
D. Thesystem administrator maps the application role USER totheLDAP group people.
Which two are true about specifying Java EE environment annotation metadata for session bean classes? (Choose two.)
A. Itis possible to inject a resource without using annotations.
B. Only field-level annotations can be overriden by the deployment descriptor.
C. Only type-level annotations can be overriden by the deployment descriptor.
D. Resource annotations cannot be specified on a superclass of the session bean class.
E. Type-level, method-level,andfield-level annotations can all beoverridden by thedeployment descriptor.
F. Only field-level annotations and method-level annotations can be overridden by the deployment descriptor.
Given:
11.©Entity public class X{
12.
@ld int id;
13.
Y y; 14.}
A public class Y with NO Java Persistence annotations is defined in the same package.
Which statement is correct about these classes if NO other annotations and mapping descriptors are provided?
A. Class Y must be serializable.
B. ClassYmust be marked as an entity.
C. The entity X is notdefinedcorrectly.The field y must be marked as @Lob.
D. ClassY must be accessedbyapersistenceapplication throughapublicinterface.
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