1Z0-895 무료 덤프문제 온라인 액세스

A developer creates a stateless session bean. This session bean needs data from a remote system. Reading this data takes a long time. Assume that the data will NOT change during the life time of the bean and that the information to connect to the remote system is defined in JNDI.
Which statement describes how to manage the data correctly?

• A.The data can only be read in the bean's business methods.
• B.Read the data in a method which is annotated with @PostActivate.
• C.Read the data in a method which is annotated with @PostConstruct.
• D.Read the data in a method which is annotated with @PrePassivate.
• E.Read the data in the bean's constructor.

A developer implements a stateless session bean as a timed object. The bean contains two local business methods with the transaction attribute REQUIRED.

A client begins a UserTransaction and calls the foo local business method. The foo method returns five seconds later. The client rolls back the transaction and then calls the bar local business method. Assuming there have been no other client invocations on the stateless session bean, what is the value of the size variable when control reaches Line 18?

• A.-1
• B.0
• C.1

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 performance 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:

These methods are called by the addTransfer method of a second CMT session bean in the following order:
checkGooods, getUniqueId, checkAmount, storeTranfer
Assuming no other transaction-related metadata, which is the correct set of transaction attributes for the methods in the session beans?

• A.0.addTransferREQUIRED 1.checkGoodsREQUIRED 2.getUnigueIdREQUIRES_NEW 3.checkAmountsNOT_SUPPORTED 4.storeTransferMANDATORY
• B.0.addTransferREQUIRED 1.checkGoodsREQUIRED 2.getUnigueIdREQUIRES_NEW 3.checkAmountsNEVER 4.storeTransferMANDATORY
• C.0.addTransferREQUIRED 1.checkGoodsREQUIRED 2.getUnigueIdREQUIRED 3.checkAmountsREQUIRED 4.storeTransferREQUIRED
• D.0.addTransferNOT_SUPPORTED 1.checkGoodsREQUIRED 2.getUnigueIdREQUIRES_NEW 3.checkAmountsNOT_SUPPORTED 4.storeTransferMANDATORY

Assume you have been tasked with building an ejb-jar containing an EJB application. The EJB application contains local, remote, and web service and-point EJBs that provide reusable services within an enterprise. When the application is deployed clients will access the remote session beans using the global JNDI name java/: ServiceLayer / <bean_name>. All of the EJBs are located in the com.acme.servicelayer package and are deployed as class files. The application uses a maximum of deployment descriptor and annotation configuration?

• A.Name the jar servicelayer.jar with the following structure:
  / (Root)
  I - META - INF/
  I - MANIFEST.MF
  I - ejb-jar.xml
  I - com/
  I - servicelayer/
  <list of classes>
• B.Name the jar servicelayer.jar with the following structure:
  /(Root)
  I - META - INF /
  I - ejb - jar.xml
  I - com/
  I - acme/
  I - servicelayer/
  <list of classes>
• C.Name the jar servicelayer.jar with the following structure:
  / (Root)
  I - META - INF/
  I - MANIFEST.MF
  I - ejb - jar.xml
  I - classes/
  I - com/
  I - acme /
  I - servicelayer/
  <list of classes>
• D.Name the jar servicelayer.jar with the following structure:
  / (Root)
  I - META - INF /
  I - MANIFEST.MF
  I - classes/
  I - com/
  I - acme/
  I - servicelayer /
  <list of classes>

A developer writes a stateless session bean HelloBean that exposes a local business interface Hello: The developer wants to test HelloBean using the EJB 3.1 Embeddable API. Given a main method with the following code:

100. EJBContainer container = EJBContainer.createEJBContainer();
Assuming HelloBean is packaged in hello.jar and included in the classpath, which code correctly acquires a reference to HelloBean?

• A.Context c = container.getContext();
  Hello h = (Hello) ic.lookup("com.acme.Hello");
• B.InitialContext ic = new InitialContext();
  Hello h = (Hello) ic.lookup("java:global/hello/HelloBean");
• C.InitialContext ic = new InitialContext();
  Hello h = (Hello) ic.lookup("com.acme.Hello");
• D.Context c = container.getContext();
  Hello h = (Hello) ic.lookup("java:global/hello/HelloBean");