IT MNC GROUP Interview Questions and Answers

An array is a data structure that stores a collection of elements, while a string is a sequence of characters.

• An array can hold multiple values of the same data type, accessed by index.

• A string is a specific type of array that stores a sequence of characters.

• Example: Array - [1, 2, 3], String - 'hello'

Conditional statements are used in programming to execute different code based on certain conditions being met.

• Conditional statements allow for decision-making in code

• Common types include if statements, else statements, and switch statements

• Examples: if (condition) { // do something } else { // do something else }

List is mutable in Python

• Lists in Python are mutable, meaning they can be changed after creation

• Elements can be added, removed, or modified in a list

• Example: list1 = [1, 2, 3], list1[0] = 4 will change the first element to 4

Dynamic refers to something that is constantly changing or updating, while statistics involves collecting, analyzing, and interpreting data.

• Dynamic refers to elements that can change or be updated in real-time, such as dynamic websites or dynamic programming languages like JavaScript.

• Statistics involves collecting, organizing, analyzing, and interpreting data to make informed decisions or predictions, such as in survey...read more

Substitute refers to replacing one thing with another, while validation involves confirming the accuracy or correctness of something.

• Substitute involves finding an alternative or replacement for something.

• Validation is the process of ensuring that something is accurate, correct, or meets certain criteria.

• In the context of consulting, substitute could refer to finding alternative solutions or approaches to a problem, wh...read more

Git is a version control system that helps manage code changes and collaboration in software development.

• Initialize a repository: Use 'git init' to create a new Git repository.

• Clone a repository: Use 'git clone <repository-url>' to copy an existing repository.

• Check status: Use 'git status' to see changes and the current branch.

• Add changes: Use 'git add <file>' to stage changes for commit.

• Commit changes: Use...read more

Docker is a platform for developing, shipping, and running applications in containers, ensuring consistency across environments.

• Docker allows you to package applications with all their dependencies into a container.

• Example: Use 'docker run hello-world' to run a simple container that verifies Docker installation.

• Docker images are read-only templates used to create containers. Example: 'docker build -t myapp .' builds an...read more

Maven is a build automation tool used primarily for Java projects, managing dependencies and project lifecycles.

• Maven uses a POM (Project Object Model) file, typically named pom.xml, to manage project configuration.

• Dependencies are declared in the POM file, allowing Maven to automatically download and manage them.

• Maven has a standard directory structure: src/main/java for source code, src/test/java for test code.

• Common...read more