Week 3 - Stateless Session Beans (SLSB)

Question 1

What is a stateless session bean?

Answer 1

A collection of related methods/services.

Question 2

SLSB require passivation and activation (T or F)

Answer 2

F - no state to save

Question 3

An SLSB can have instance variables (T or F)

Answer 3

T

Question 4

What is the path and filename of EJB XML deployment descriptors?

Answer 4

META-INF/ejb-jar.xml

Question 5

How does the method-ready pool work with SLSBs?

Answer 5

A client can only use one instance at a time.
When a client calls an SLSB method, any instance in the pool can process it.

Question 6

What is SessionContext?

Answer 6

An interface that allows an EJB to interact with an EJB container.

jakarta.ejb.SessionContext
@Resource SessionContext ctx;

Question 7

What is EJBContext?

Answer 7

A base interface for interacting with a container context

jakarta.ejb.EJBContext

Question 8

What is the Enterprise Naming Context (ENC)?

Answer 8

The Enterprise Naming Context is a space in JNDI where EJBs are registered.