//Inline
-----Original Message-----
From: raja_ms [mailto:[EMAIL PROTECTED]]
Sent: Monday, February 05, 2001 5:43 PM
To: [EMAIL PROTECTED]
Subject: answers plz
can anyone let me know the answers of all this at the earliest.
> CHOOSE ONE OPTION
>
>
> <HOME_INTERFACE_OBJECT>.create();
> Which one of the following is returned to the client as a result of the
> above method call?
> Choice 1 Remote interface
> Choice 2 Serialized connection
> Choice 3 EJB handle
> Choice 4 Skeleton
> Choice 5 Home interface
>// Remote Interface
>
> When using container managed transactions, how should exceptions be caught
> when thrown by a failed bean method?
> Choice 1 In the bean implementation
> Choice 2 In the client implementation
> Choice 3 In the transaction manager
> Choice 4 Automatically, by the EJB container
> Choice 5 Using the UserTransaction API specification
>
//Depends on the implementation
>
> An entity bean has been developed to represent a customer who uses a
> telephone number as the primary key.
> Referring to the above scenario, which one of the following calls would
> remove the underlying customer data from the database in a
> container-managed persistent entity bean?
> Choice 1 ejbDelete()
> Choice 2 ejbRemove()
> Choice 3 ejbCreate()
> Choice 4 ejbStore()
> Choice 5 ejbLoad()
>
When remove is called from the client. ejbRemove()
> What is returned by a successful InitialContext.lookup()?
> Choice 1 EJBHandle
> Choice 2 Reference to a home object
> Choice 3 Bean object
> Choice 4 Reference to a remote object
> Choice 5 InitialContext
>
>//Ref to a home object (provided the lookup is done for the same)
> Which one of the following bean types is always unique to a particular
> user?
> Choice 1 Standard Java bean
> Choice 2 BMP Entity bean
> Choice 3 Stateful session bean
> Choice 4 CMP Entity bean
> Choice 5 Re-entrant Entity bean
>
>//Stateful session bean
> The details of implementation for a given object should be hidden from
> other objects.
> Which one of the following provides the benefits described above?
> Choice 1 : Cohesion
> Choice 2 : Decoupling
> Choice 3 : Inheritance
> Choice 4 : Encapsulation
> Choice 5 : Polymorphism
>
>I don't know about cohesion and decoupling and rest does not hide the
implementation :) (Use component model instead like COM)
> An EJB instance is forbidden to:
> Choice 1 Use the JMS API
> Choice 2 Create Threads
> Choice 3 Use Swing Classes
> Choice 4 Dynamically Load Classes
> Choice 5 Use the JNDI API
>
>//Create Threads
> Which one of the following entities would contain only the method
> signatures of user-defined business methods?
> Choice 1 Bean implementation
> Choice 2 Remote interface
> Choice 3 Home interface
> Choice 4 javax.ejb
> Choice 5 RemoteObject interface
>
>//Remote Interface
> Which one of the following interfaces is used for message queuing and
> publish/subscribe communication?
> Choice 1 XA
> Choice 2 JMQ
> Choice 3 JMS
> Choice 4 JTA
> Choice 5 JTS
>
>//Don't know but not XA,JTS,JTA because they have to deal with transactions
> Of all enterprise bean types, which type generally incurs the LEAST amount
> of resource overhead?
> Choice 1 Stateful session bean
> Choice 2 BMP Entity bean
> Choice 3 CMP Entity bean
> Choice 4 Standard Java bean
> Choice 5 Stateless session bean
>
//Depends on the implementation and what is meant by the word "resource"
> The RMI stub implements which type of pattern?
> Choice 1 Façade
> Choice 2 Proxy
> Choice 3 Visitor
> Choice 4 Bridge
> Choice 5 Singleton
>
//Don't know
> The bean-container contract provides which one of the following services?
>
> Choice 1 Message queuing
> Choice 2 Database connection pooling
> Choice 3 User behavior profiling
> Choice 4 HTTP logging
> Choice 5 Transactions
>
>//Transactions
> Which one of the following includes the javax.ejb package?
> Choice 1 JSDK2.0
> Choice 2 JDBC2.0
> Choice 3 J2ME
> Choice 4 J2SE
> Choice 5 J2EE
>
>//All probably
> Which one of the following entities would contain only the method
> signatures of user-defined business methods?
> Choice 1 Bean implementation
> Choice 2 Remote interface
> Choice 3 Home interface
> Choice 4 javax.ejb
> Choice 5 RemoteObject interface
>
>//Remote interface
> Which one of the following is the only method specified in the EJBObject
> interface that does not return a value or object?
> Choice 1 remove()
> Choice 2 getPimaryKey()
> Choice 3 isIdentical()
> Choice 4 getEJBHome()
> Choice 5 getHandle()
>remove()
>
> public void ejbRemove() throws RemoteException
> {
> try
> {
> String query = "delete from customers where cust_id = " +
> pk;
> executeUpdate(query);
> }
> catch (Exception e)
> {
> }
> }
> Given the above code, which type of entity bean does this represent?
> Choice 1 CMT entity bean
> Choice 2 Re-entrant entity bean
> Choice 3 CMP entity bean
> Choice 4 BMT entity bean
> Choice 5 BMP entity bean
>
>Bean managed database handling :)
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