IT Engineer Trainee Interview Questions and Answers

HTML, CSS, and JavaScript are essential web development technologies used to create and style websites.

• HTML (HyperText Markup Language) is used for creating the structure and content of web pages.

• CSS (Cascading Style Sheets) is used for styling the appearance of web pages.

• JavaScript is a programming language used for adding interactivity and dynamic elements to web pages.

A PC (Personal Computer) is an electronic device that can perform various tasks using software and hardware components.

• PC stands for Personal Computer

• It consists of hardware components such as CPU, RAM, hard drive, and input/output devices such as keyboard, mouse, and monitor

• It runs on an operating system such as Windows, macOS, or Linux

• Software applications can be installed and run on a PC for various purposes such as gaming, productivity, or communication

• PCs can be connecte...read more

A PC includes a central processing unit (CPU), memory, storage, input/output devices, and a motherboard.

• CPU (Central Processing Unit) - the brain of the computer

• Memory - temporary storage for data and programs

• Storage - permanent storage for data and programs

• Input/output devices - keyboard, mouse, monitor, printer, etc.

• Motherboard - connects all the components together

React JS is a JavaScript library for building user interfaces.

• React JS allows developers to create reusable UI components.

• It uses a virtual DOM for better performance.

• React JS follows a unidirectional data flow.

• It is maintained by Facebook and a community of developers.

• Example: ReactDOM.render(, document.getElementById('root'));