1Z0-895 試験問題を無料オンラインアクセス

A stateful session bean needs to restore its conversational state to its initial state if the transaction in which the bean is participating rolls back.
Which bean method can be used to do this?

• A.SessionContext.getUserTransaction
• B.SessionContext.setRollbackOnly
• C.SessionSynchrinization.beforeCompletion
• D.SessionSynchronization.afterCompletion

Suppose a developer wants to create an automatic persistent timer that performs data validation every hour. Given the following stateless session bean:
@Stateless
Public class OrderVerificationBean {
Private void verificationExternalOrders () {
/ / do something
}
}
What is the minimum modification you would need to make to the bean to create the automatic persistent timer?

• A.Modify the verifyExternalOrders method to look like this:
  @Schedule (hour = "*")
  private void verifyExternalOrders () {
  / / do something
  }
• B.Modify the verifyExternalOrders method to look like this:
  @Schedule (hour = "*", persistent = true)
  private void verifyExceptionalOrders () {
  / / do something
  }
• C.Modify the verifyExternalOrders method to look like this:
  @Schedule (persistent = true)
  private void verifyExceptionalOrders () {
  / / do something
  }
• D.Modify the verifyExternalOrders methos to look like this: @Schedule private void verifyExternalOrders () { / do something }

A java EE application contains a session bean which uses a security role USER. A group called people is defined an LDAP server. Which two define appropriate EJB role responsibilities? (Choose two.)

• A.The deployer defines and configures the LDAP realm.
• B.The deployer maps the application role USER to the LDAP group people.
• C.The system administrator maps the application role USER to the LDAP group people.
• D.The system administrator defines and configures the LDAP realm.

A developer implements a CMT session bean with a method storeBoth which inserts data both a related database and an LDAP server. The relational database supports transactions while the LDAP system does NOT.
Given that both updates should succeed or be rolled back, while is the best solution?

• A.Define the transaction attribute of the method storeBoth as REQUIRED. The container manages the transactions and will roll back modifications if something goes wrong in either database insert or LDAP insert.
• B.Implement the SessionSynchoronization interface in the session bean. In the afterCompleteion method, the LDAP inserts are rolled back if false is passed as an argument to the afterCompletion method.
• C.Define the transaction attribute of the method storeBoth as REQUIRED_NEW. Carry out the database insert first. Subsequently, execute the LDAP inserts, catching LDAP exceptions. If exceptions are raised, call the SessionContext.setRollBackOnly method.
• D.Define the transaction attribute of the method storeBoth as REQUIRED_NEW. Carry out the LDAP insert first. If SessionContext.getRollBackOnly returns false, execute the database inserts, catching SQL exceptions. If exceptions are raised, call the SessionContext.setRollBackOnly.

Given the following code in an EJB session bean:

Which code, inserted at Line 15, portably looks up the injected resource?

• A.Object obj = ic.lookup ("java:cmp/env/jdbc/employeeDB);
• B.Object obj = ic.lookup ("jdbc/employeeDB");
• C.Object obj = ic.lookup ("employeeDB");
• D.Object obj = ic.lookup ("java:comp/env/employeeDB");
• E.Object obj = ic.lookup ("dataSource");