Spring Cloud Test 1

Question 1

In transactional management, what is ACID?

Accepted Answer

Atomicity, Consistency, Isolation, Durability

Answer

ACID is an acronym that stands for Atomicity, Consistency, Isolation, and Durability, which are a set of properties guaranteeing that database transactions are processed reliably. Atomicity ensures that a transaction is treated as a single, indivisible unit; Consistency ensures that a transaction brings the database from one valid state to another; Isolation ensures that concurrent transactions do not interfere with each other; and Durability ensures that once a transaction is committed, its changes are permanent.

Question 2

What exactly is the Spring MVC framework?

Accepted Answer

The Spring web MVC framework provides model-view-controller architecture and ready components that can be used to develop flexible and loosely coupled web applications.

Answer

The Spring Web MVC (Model-View-Controller) framework is a robust and flexible architecture designed for developing web applications in Java. It provides a clear separation of concerns by dividing an application into three interconnected components: the Model (data), the View (user interface), and the Controller (request handling). This architecture promotes loose coupling, making applications easier to develop, test, and maintain.

Question 3

What exactly is spring?

Accepted Answer

Spring is an open source development framework for enterprise Java.

Answer

Spring is an open-source, comprehensive application development framework for enterprise Java. It provides extensive infrastructure support for developing robust Java applications, simplifying common tasks like dependency injection, aspect-oriented programming, and data access. Spring's modular design allows developers to use only the parts of the framework they need, making it highly versatile and widely adopted.

Question 4

If a bean is scoped to an HTTP session, it is considered scoped.

Accepted Answer

session

Answer

In Spring, when a bean is scoped to an HTTP session, it means that a single instance of that bean is created for each user's HTTP session. This 'session' scope ensures that the bean's state is maintained uniquely for a particular user throughout their interaction with the web application. Once the HTTP session ends, the bean instance is destroyed.

Question 5

What exactly is a target object?

Accepted Answer

The object being advised by one or more aspects, this object will always be a proxy object, also referred to as the advised object.

Answer

In Spring's Aspect-Oriented Programming (AOP), the 'target object' refers to the object that is being advised by one or more aspects. This is the actual business logic object on which the advice (e.g., logging, security) is applied. When AOP is used, the Spring framework typically creates a proxy object that wraps the target object, and it is this proxy that is injected into other components, also known as the advised object.

Spring Cloud Practice Test

Spring Cloud Practice Test

Spring Cloud Test 1