1Z0-860 Online Practice Questions and Answers

Given:

A session bean Foo uses container-managed transactions The container throws a javax.transaction.TransactionRolledBackException when the doStuff method runs. Which transaction attribute can the doStuff method have for this to occur?

A. NEVER

B. MANDATORY

C. REQUIRES_NEW

D. NOT SUPPORTED

A developer writes a stateless session bean FooBean with one remote business interface FooRemote containing one business method foo. Method foo takes a single parameter of application-defined type MyData.

11.

public class MyData implements Java. io.Serializablej

12.

int a; 13.}

Method foo is implemented within the FooBean class as:

11.

public void foo(MyData data) {

12.

data.a = 2; 13.}

Another session bean within the same application has a reference to FooRemote in variable fooRef and calls method foo with the following code:

11.

MyData data = new MyDatafJ;

12.

data.a = 1;

13.

fooRef.foo(data);

14.

System, out. println(data. a);

What is the value of data, a when control reaches Line 14 of the client ?

A. 0

B. 1

C. 2

D. either1or 2

A session bean's business method throws an exception during execution. Which two are responsibilities of the Bean Provider when throwing the exception? (Choose two.)

A. For application exceptions, ensure that if the current transaction commits there will be no loss of data integrity.

B. For application exceptions, ensurethatthe current transaction will commit.

C. For system errors, when the client is remote, throw a java.rmi.RemoteException that wraps the original exception.

D. For checked exceptions from which the bean cannot recover, throw an EJBException that wraps the original exception.

A developer creates the following session bean:

10.

©Stateless

11.

@RolesAllowed("SECRET")

12.

public class MyBean implements Mylnterface

13.

public void methodAOJ}

14.

@PermitAII

15.

public void methodB0 {}

16.

@DenyAII

17.

public void methodC0 {}

18.}

No deployment descriptor is supplied. Which two statements are true? (Choose two.)

A. A user in the role "SECRET" will be able to access all of the methods.

B. A user in the role "FOO" will be able to access methodA and methodB.

C. A user without any role will be able to access methodB but NOT methodA.

D. A user in the role "SECRET" will be able to access methodA and methodB.

E. A user in the role "SYSADM" will be able to access methodA, methodB, and methodC.

Which two class types must be implicitly or explicitly denoted in the persistence.xml descriptor as managed persistence classes to be included within a persistence unit?(Choose two.)

A. Entity classes

B. Interceptor classes

C. Embedded classes

D. Entity listener classes

FooBean is an EJB 3.0 session bean that can make valid use of UserTransaction. Which is guaranteed to work in an EJB container for FooBean to obtain the UserTransaclion object?

A. Invoke a method on a SessionContext that returns a UserTransaction object.

B. Perform JNDI lookup with name "java:/UserTransaction" on an InitialContext.

C. Perform JNDI lookup with the name "jdbc/UserTransaction" on an InitialContext.

D. Use the @TransactionManagement annotation to inject an instance variable of type UserTransaction in a bean class.

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 is working on a user registration application using EJB 3.0. A business method registerUser in stateless session bean RegistrationBean performs the user registration. The registerUser method executes in a transaction context started by the client. If some invalid user data causes the registration to fail, the client invokes registerUser again with corrected data using the same transaction. Which design can meet this requirement?

A. Have registerUser method call EJBContext.setRollbackOnlyOmethodafter registration fails.

B. Have registerUser method throw javax.ejb.EJBTransactionRequiredExceptionafterregistration fails.

C. HaveregisterUser method throw EJBException without marking the transaction for rollback, after registration fails.

D. Create an application exception withtherollbackattributeset to falseandhave registerUser method throwit afterregistration fails.