Free IT Software Development & Databases Questions and Answers

Question 1

Which language is commonly used for web development?

Accepted Answer

JavaScript

Answer

JavaScript is a high-level, interpreted programming language that is one of the core technologies of the World Wide Web. It is commonly used for web development to create interactive and dynamic content on websites, running directly in the client's web browser. Along with HTML and CSS, it forms the backbone of modern web applications, enabling rich user experiences.

Question 2

What is the primary purpose of a database?

Accepted Answer

Store and manage data

Answer

The primary purpose of a database is to efficiently store, organize, and manage large amounts of structured information. Databases allow for easy retrieval, updating, and analysis of data, supporting various applications from e-commerce to scientific research. They provide a reliable and systematic way to handle information, ensuring data integrity, consistency, and accessibility.

Question 3

Which SQL command is used to retrieve data?

Accepted Answer

SELECT

Answer

The `SELECT` command is a fundamental operation in SQL (Structured Query Language) specifically designed for retrieving data from one or more tables within a database. It allows users to specify which columns they want to view and apply various conditions to filter the results. The other options like UPDATE, INSERT, and DELETE are used for modifying data, not for querying it.

Question 4

What does IDE stand for in software development?

Accepted Answer

Integrated Development Environment

Answer

IDE stands for Integrated Development Environment. It is a software application that provides comprehensive tools and facilities to computer programmers for software development. An IDE typically combines a source code editor, build automation tools, and a debugger into a single graphical user interface, aiming to maximize developer productivity.

Question 5

Which of the following is a version control system?

Accepted Answer

Git

Answer

Git is a widely used distributed version control system (VCS) that tracks changes in source code during software development. It allows multiple developers to collaborate on a project efficiently, managing different versions of files and merging changes without conflicts. Linux is an operating system, Docker is a containerization platform, and Node.js is a JavaScript runtime environment, none of which are version control systems.

IT - Information Technology Certified Practice Test

IT - Information Technology Certified Practice Test

Free IT Software Development & Databases Questions and Answers