SCBCD 5 Free Mock Exam

Question 1 of 22 [EJB 3.0 Overview]

You are assigned to develop EJB 3.0 components for your Online Exam Software product. One of your colleague more interested to use third party dll for sending emails and he need to access this dll in EJB component.
Which of the folllowing statements are true about EJB 3.0 prgramming restrictions?
Choice 1	An enterprise bean must NOT attempt to load a native library.
Choice 2	An enterprise bean must NOT declare static fields as final.
Choice 3	An enterprise bean must NOT attempt to create a new security manager.
Choice 4	An enterprise bean must NOT propagate a RuntimeException to the container.
Choice 5	An enterprise bean must NOT attempt to obtain a javax.naming.lnitialContext.

Question 2 of 22 [EJB 3.0 Overview]

Which of the statements are true about EJB 3.0 containers?
Choice 1	Remote argument passing semantics conform to Java RMI-IIOP.
Choice 2	Remote argument passing semantics conform to Java TCP/IP.
Choice 3	All of the above

Question 3 of 22 [EJB 3.0 Overview]

You want to develop a large scale enterprise application that requires web service connectivity to 3 different applications. Your architect decided to use EJB 3.0-complaint application server. Which of the following statements are TRUE about EJB tier?
Choice 1	EJB 3.0-compliant components are guaranteed to work within any Java EE 5 application server.
Choice 2	Bean Providers are NOT required to write code for transaction demarcation.
Choice 3	Both vertical and horizontal clustering is guaranteed to be supported by the EJB 3.0 container.
Choice 4	Only vertical clustering is guaranteed to be supported by the EJB 3.0 container.
Choice 5	Only horizontal clustering is guaranteed to be supported by the EJB 3.0 container.

Question 4 of 22 [EJB 3.0 Overview]

EJB 3.0 containers must provide a specific subset of which two APIs?
Choice 1	Servlet APIs
Choice 2	JavaMail APIs
Choice 3	JAX-WS APIs
Choice 4	Java Swing APIs
Choice 5	Java AWT APIs
Choice 6	CLDC API

Question 5 of 22 [General EJB 3.0 Enterprise Bean Knowledge]

You need to develop a scheduler thread for EPractize Labs license server to process license request. Your architect wants to use EJB 3.0 Timer service to achieve this requirement.
Which statement is true about the Timer service in an EJB 3.0 stateless session bean?
Choice 1	The timeout callback method contains the business logic that handles the timeout event.
Choice 2	The timeout callback method must throw RemoteException.
Choice 3	The timeout callback method must throw application exceptions to report business logic failures.

Question 6 of 22 [EJB 3.0 Session Bean Component Contract & Lifecycle]

Which is the valid use of the javax.ejb Init annotation?
Choice 1	to annotate a method in a stateful session bean class
Choice 2	to specify the correspondence of a method on a stateful session bean with a create method of the adapter home interfaces
Choice 3	to annotate a bean class inside the ejb-jar archive to act as a bootstrap EJB which is loaded into the container before any other EJBs
Choice 4	All of the above

Question 7 of 22 [EJB 3.0 Session Bean Component Contract & Lifecycle]

A developer working in EPractize Labs Software writes a stateless session bean to handle online test management, TestManagerBean and uses its deployment descriptor to declare a local ejb dependency on a stateful session bean in the same ejb-jar.

<ejb-local-ref> 

<ejb-ref-name>userRef</ejb-ref-name> 

<local>com.epractizelabs.skillevaluationlab.user.UserManager</local> 

<ejb-link>UserManagerBean</ejb-blink> 

<injection-target> 

<injection-target-class>com.epractizelabs.skillevaluationlab.test.TestManagerBean</injection-target-class> 

<injection-target-name>user</injection-target-name> 

</injection-target> 

</ejb-local-ref>

Which environment annotation? When declared within the TestManagerBean bean class, is equivalent to the ejb-local-ref shown above?

Choice 1 @EJB(bean ="UserManagerBean") private userManager UserManager.userManagerRef;

Choice 2 @EJB(name="userManager", beanName="UserManagerBean") private com.epractizelabs.skillevaluationlab.user.UserManage userManager;

Choice 3 @EJB(name="userManagerRef", beanName="UserManagerBean") private com.epractizelabs.skillevaluation.user.UserManager userManagerRef;

Choice 4 @EJB(name="ejb/userManagerRef", beanName="UserManagerBean") private com.epractizelabs.skillevaluationlab.UserManager userManager;

Question 8 of 22 [EJB 3.0 Session Bean Component Contract & Lifecycle]

Which of the following statements are TRUE about EJB 3.0 session beans client access?
Choice 1	A remote client accesses a session bean through the bean's remote business interface.
Choice 2	A remote client accesses a session bean through the bean's home interface.
Choice 3	A remote client accesses a session bean directly through the bean class.

Question 9 of 22 [EJB 3.0 Session Bean Component Contract & Lifecycle]

You are assigned to develop EJB 3.0 stateful session bean. When you look at the design document you noticed that transferFund() method must be declared as Required transaction attribute.
Which of the following statements would hold true when a non-transactional remote client invokes transferFund?
Choice 1	Container starts a new transaction and invokes the bean method with it.
Choice 2	The method throws TransactionRequiredException to the client.
Choice 3	The method throws RemoteException to the client.
Choice 4	The bean method executes without any error.

Question 10 of 22 [EJB 3.0 Message-Driven Bean Component Contract]

Which of the following statements are correct?
Choice 1	An EJB 3.0 message-driven bean can itself be the client of another message-driven bean.
Choice 2	The client of an EJB 3.0 message-driven bean can use the bean's remote business interface to communicate with the bean.
Choice 3	Messages sent to JMS topics are intended for only one receiver whereas messages sent to JMS queues are intended for multiple receivers.
Choice 4	All of the above.

Question 11 of 22 [EJB 3.0 Message-Driven Bean Component Contract]

One of your Java EE application need to process large volumes of asynchronous messages and guarantee delivery.
Which Java EE technologies is correct for this architecture?
Choice 1	Stateless session bean and JAX-WS
Choice 2	JMS topic and MDB
Choice 3	JMS topic and Stateless session bean
Choice 4	Servlet and JAX-WS

Question 12 of 22 [Java Persistence API Entities]

You are assigned to complete User Composite Entity model for EPractize Labs Skill Evaluation Lab. UserRole entity requires composite primary key ( userId and userRoleId).
Select valid JPA entity for defining UserRole entity with composite primary key.
Choice 1	`@IDClass(com.epractizelabs.exam.UserRolePK.class) @Entity public class UserRole { @PK int userId; @PK int userRoleId; // more code here }`
Choice 2	`@IdClass(com.epractizelabs.exam.UserRolePK.class) @Entity public class UserRole { @Id int userId; @Id int userRoleId; // more code here }`
Choice 3	`@PKClass(com.epractizelabs.exam.UserRolePK.class) @Entity public class UserRole { @Id int userId; @Id int userRoleId; // more code here }`

Question 13 of 22 [Java Persistence Entity Operations]

Which statement is correct about JPA ?
Choice 1	Entities must be used within EJB 2.x BMP enity beans.
Choice 2	Entities must be used within EJB 2.x CMP enity beans.
Choice 3	Entities must be used within EJB 2.x CMP local enity beans.
Choice 4	A non persistent field must be annotated as @Transient.

Question 14 of 22 [Java Persistence Entity Operations]

Which of the following statements are TRUE about EntityManager.flush method?
Choice 1	The flush method might cause the persist operation to be cascaded to related entities.
Choice 2	Extensive use of the flush method decreases the performance of a Java Persistence application.
Choice 3	Flush method synchronize the current persistence context with the database.
Choice 4	The flush method should be used within stateful session beans only.

Question 15 of 22 [Java Persistence Entity Operations]

An application wants to utilize side-effects of cascading entity-manager operations to related entities.
Which statement is correct?
Choice 1	The persist operation is always cascaded to related entities for unidirectional relationships
Choice 2	The persist operation is always cascaded to related entities for bidirectional relationships
Choice 3	The persist operation applied to a new entity Entity is cascaded to entities referenced by Entity if the relationship from Entity to these other entities is annotated with the cascade=PERSIST or cascade= ALL annotation element value
Choice 4	The persist operation is always cascaded to related entities for both unidirectional and bidirectional relationships

Question 16 of 22 [Persistence Units and Persistence Contexts]

You are developing a Java EE application to maintain EPractize Labs customer details. One customer can have one or more products.
Select the valid code to update product details of a customer.
Choice 1	`@PersistenceContext EntityManager em; public void saveProduct(int custID, Product product) { Customer cust = em.find("Select Customer where custID = :custID"); cust.getProducts().add(product); product.setCustomer(cust); }`
Choice 2	`@PersistenceContext EntityManager em; public void saveProduct(int custID, Product product) { Customer cust = em.find("custID"); cust.getProducts().add(product); product.setCustomer(cust); }`
Choice 3	`@PersistenceContext EntityManager em; public void saveProduct(int custID, Product product) { Customer cust = em.find(Customer.class, custID); cust.getProducts().add(product); product.setCustomer(cust); }`
Choice 4	`@PersistenceContext EntityManager em; public void saveProduct(int custID, Product product) { Customer cust = em.find(Customer.class, "custID"); cust.getProducts().add(product); product.setCustomer(cust); }`

Question 17 of 22 [Java Persistence Query Language]

Which of the following methods a named query can be defined?
Choice 1	By @NamedQuery annotation
Choice 2	By @NamedNativeQuery annotation
Choice 3	using the named-query element in the XML descriptor
Choice 4	using the named-native-query element in the XML descriptor

Question 18 of 22 [Java Persistence Query Language]

EPractize Labs Online Skill Evaluation Lab is developed by Java EE architecture and uses JPA for handling data model. A Test entity has a one-to-many, bidirectional relationship with a Question entity. Two Test entities are persisted, each having two Question entities associated with them. For example, Test A has Question 1 and Question 2, while Test B has Question 3 and Question 4.
Which query returns a Collection of fewer than four elements?
Choice 1	`SELECT q.test FROM Question q`
Choice 2	`SELECT t FROM Question q INNER JOIN q.test t`
Choice 3	`SELECT t FROM Test t INNER JOIN t.questions q`
Choice 4	`SELECT t from Question q LEFT JOIN q.test t LEFT JOIN FETCH t.questions`

Question 19 of 22 [Transactions]

A developer wants to achieve the following two behaviors:

If a client calls a business method without a transaction context, the container will invoke the bean in an unspecified transaction context.
If a client calls a business method with a transaction context, the container will suspend the association of the transaction context with the current thread before invoking the enterprise bean's business method.

Which transaction attribute should be used?

Choice 1

NEVER

Choice 2

REQUIRED

Choice 3

SUPPORTS

Choice 4

NOT_SUPPORTED

Question 20 of 22 [Exceptions]

You are assigned to develop EJB 3.0 stateful session bean. When you look at the design document you noticed that `transferFund()` method transaction must be immediately rolled back by the container in case the business method is aborted with a runtime exception.
Which option you can use?
Choice 1	CMT with REQUIRED transaction attribute.
Choice 2	Use CMT with NOT_SUPPORTED transaction attribute.
Choice 3	Use Container-Managed Transactions with transaction attribute NEVER.

Question 21 of 22 [Exceptions]

An application exception class must not extend which of the following?
Choice 1	`java.lang.RuntimeException`
Choice 2	`java.rmi.RemoteException`
Choice 3	All of the above

Question 22 of 22 [Security Management]

Code :
Given the following method permissions.

<method-permission>
 <unchecked/>
 <method> 

<ejb-name>TestManager</ejb-name>

<method-name>*</method-name>
 </method>
 </method-permission> <method-permission> 

<role-name>admin</role-name> 

<method> 
<ejb-name>TestManager</ejb-name>

<method-name>getTests</method-name> 
</method> 
</method-permission>

Which of the following statements are true?

Choice 1 The first method permission element is invalid.

Choice 2 Only a client using manager role can access the getTests() method.

Choice 3 Any client using any role can access the getTests() method.

Choice 4 Only a client who has no security identity can access the getTests() method.