W3schools Tutorials & Courses

Learn programming for free with our latest online learning resources with simple examples.

New & Trending Tutorials

Cyber Security

Terminologies for Securing a System

Before getting into the very in-depth of every concept, it is recommended to clear the concepts and terminologies related to cybersecurity and cybercrime. Each of the terms has individual meaning and is used in different scenarios in this security field.

Cyber Security

Cyber Security

Cybersecurity is all about reducing threats when people are in the process of dealing with technology. It encompasses the full range of protection against any online risk or vulnerability, which comprises information security assurance and cyber law enforcement.

Operating System

Scheduling Algorithms of Operating System

Explore CPU scheduling algorithms in operating systems with this informative tutorial. Learn about First-Come, First-Served, Shortest-Job-First, Priority Scheduling, Round-Robin, and Multilevel Queue Scheduling and their impact on process efficiency.

JavaScript

JavaScript Comments

Comments are those lines within a program or script that the compiler or interpreter does not read when they compile or interpret any source code. In this chapter, you will learn about two different types of comments that the JavaScript programmer allows to use.

JavaScript

JavaScript History

Before using JavaScript, it is good to know its nature, history, and limitations. This chapter contains complete information about the history of JavaScript.

Ethical Hacking

Darknet

"Darknet" or "Dark Net" is a lamination of a specific type of network which can only be retrieved by particular software, techniques, authorization, or configurations. It is often accessed using non-standard protocols and ports.

Ethical Hacking

Botnet

A botnet is a short form of 'robot network'. The term 'bot' is used when we have to define some automated tasks performed without user intervention. But as this term is used concerning hacking to describe a new breed of malicious threats, we will learn about it with every detail.

Ethical Hacking

Rootkit

Rootkits are a collection of tools or sets of applications that allow the administrator-level access to a computer or a network. These rootkits are fed into the host computer by a cracker (malicious hacker) either by exploiting a known vulnerability of the system or cracking the password.

Ethical Hacking

Computer Virus

A computer virus is a program or a piece of code that is specifically designed to spread from computer systems to another computer and interfere with computer operation without the victim's knowledge.

  • What is Computer Virus?
  • History and Types of Computer Virus.
  • Symptoms of a Computer Virus.
  • Countermeasures Against Computer Virus.