Spring Online Quiz

Q 1 - Which of the following is correct about dependency injection?

A - It helps in decoupling application objects from each other.

B - It helps in deciding the dependencies of objects.

C - It stores objects states in database.

D - It stores object states in file system.

Q 2 - Which is the correct implementation class of BeanFactory?

A - XmlBeanFactory

B - ClassPathBeanFactory

C - FileSystemBeanFactory

D - AdvancedBeanFactory

Q 3 - What is true about <set> collection configuration elements?

A - This helps in wiring a list of values, allowing duplicates.

B - This helps in wiring a list of values but without any duplicates.

C - This can be used to inject a collection of name-value pairs where name and value can be of any type.

D - This can be used to inject a collection of name-value pairs where the name and value are both Strings.

Q 4 - What is constructor mode of autowiring?

A - Autowiring by property name. Spring tries to match and wire its properties with the beans defined by the same names in the configuration file.

B - Spring first tries to wire using autowire by constructor, if it does not work, Spring tries to autowire by byType.

C - Autowiring by property type. Spring tries to match and wire a property if its type matches with exactly one of the beans name in configuration file.

D - Similar to byType, but type applies to constructor arguments. If there is not exactly one bean of the constructor argument type in the container, a fatal error is raised.

Q 5 - What is aspect?

A - Aspect is a way to do the dependency injection.

B - A module which has a set of APIs providing cross-cutting requirements.

C - Aspect is used to log information of application.

D - Aspect represents properties of spring based application.

Q 6 - What is Introduction?

A - An introduction represents a point in your application where you can plug-in AOP aspect.

B - This is used to inject values in objects.

C - This is not invoked during program execution by Spring AOP framework.

D - An introduction allows you to add new methods or attributes to existing classes.

Q 7 - How to use ref keyword in beans.

A - Using setter method only.

B - Using constructor argument only.

C - Using setter method and constructor argument both.

D - None of the above.

Q 8 - By default a bean is lazily loaded.

A - True

B - False

Q 9 - If a bean is scoped to HTTP session, scope is

A - global-session

B - session

C - prototype

D - request

Q 10 - What BeanPostProcessor does?

A - It processes beans once a bean is initialized.

B - It defines callback methods that you can implement to provide your own instantiation logic, dependency-resolution logic etc.

C - It processes beans once a bean is loaded.

D - It processes beans once a bean exits.