10+ Groupe Lactalis Interview Questions and Answers

An array is a data structure that stores a collection of elements of the same type in a contiguous memory location.

• Arrays are declared by specifying the data type of the elements and the number of elements in square brackets.

• Example: String[] names = new String[5];

• Elements in an array can be accessed using their index, starting from 0.

• Example: String firstElement = names[0];

Regression testing focuses on retesting modified code to ensure no new bugs are introduced, while system testing evaluates the entire system's functionality.

• Regression testing is performed on modified code to ensure that new changes do not introduce new bugs.

• System testing evaluates the entire system's functionality to ensure it meets the specified requirements.

• Regression testing is typically automated to save time and effort.

• System testing is usually performed manually to si...read more

Virtual DOM is a lightweight copy of the actual DOM, used for efficient updates in web applications.

• Virtual DOM is a concept used in frameworks like React to improve performance by minimizing actual DOM manipulations.

• DOM (Document Object Model) is the actual representation of the HTML document in the browser.

• Changes made to the virtual DOM are compared with the actual DOM, and only the differences are updated in the real DOM.

• This process helps in reducing the number of update...read more

tnterepts is not a term in OOPs concept. Please provide correct term.

Java8 features include lambda expressions, functional interfaces, streams, and default methods.

• Lambda expressions allow functional programming and simplify code.

• Functional interfaces enable the use of lambda expressions.

• Streams provide a way to process collections of data in a functional way.

• Default methods allow interfaces to have implementation.

• Date and Time API improvements.

• Nashorn JavaScript engine.

• Parallel operations.

• Type annotations.

• Method references.

• Optional class.

• Repe...read more

React is a popular JavaScript library for building user interfaces.

• Virtual DOM for faster rendering

• Component-based architecture for reusability

• One-way data binding for easier debugging

• Support for server-side rendering

• Large community and ecosystem for support and resources

Selenium is a popular automation testing tool used for web applications.

• Selenium is used for automating web browsers.

• It supports multiple programming languages like Java, Python, C#, etc.

• Selenium WebDriver is the most commonly used component for writing test scripts.

• Selenium Grid is used for parallel testing across different browsers and environments.

C programming is a high-level programming language used for developing system software and applications.

• C programming is a procedural language with a rich set of built-in functions.

• It is widely used for developing operating systems, compilers, and embedded systems.

• Example: Writing a simple 'Hello World' program in C.

SOLID principles are a set of five design principles in object-oriented programming to make software designs more understandable, flexible, and maintainable.

• Single Responsibility Principle (SRP) - A class should have only one reason to change.

• Open/Closed Principle (OCP) - Software entities should be open for extension but closed for modification.

• Liskov Substitution Principle (LSP) - Objects of a superclass should be replaceable with objects of its subclasses without affecting...read more

Typical questions about automation in software testing

• What are the benefits of automation in software testing?

• How do you select which test cases to automate?

• What tools have you used for test automation?

• How do you handle dynamic elements in automated tests?

• Can you explain a scenario where automation saved time and improved efficiency?