INTRODUÇÃO A SISTEMAS OPERACIONAIS | Aula (OWASP | Formming Hackers)

#operating #system #hacker 🟡OWASP-BH: https://owasp.org/www-chapter-belo-ho... 🟡Free MeOwna study lab: https://owasp.org/www-chapter-belo-ho... 🟡Official website: https://formminghackers.com 🟡Instagram:   / formminghackers   🟡OWASP community on Whatsapp: https://chat.whatsapp.com/FyWVQMgG1Ae... 🟡Become a Forming Hackers student: https://formminghackers.com/web_hacki... +Note: We do not influence or support cybercrimes; our goal is to share knowledge with Information Security / Cybersecurity professionals for educational purposes. +Video Title: INTRODUCTION TO OPERATING SYSTEMS | Lesson (OWASP | Formming Hackers) +Video Link:    • INTRODUÇÃO A SISTEMAS OPERACIONAIS | Aula ...   +Channel Name: Formming Hackers +Channel Link:    / formminghackers   +Key Terms in this Video: operating systems, pentesting, pentesting system, Kali Linux, Parrot, Linux hacker Main Learnings: Definition of Operating System: The operating system is software that provides the necessary resources for users (human beings) to access the computer's hardware. Hardware is the physical part of the computer (the part you kick). The operating system provides an audiovisual interface so that the senses can perceive and utilize the computer's resources. Layers of Abstraction of the Operating System: The layers of abstraction are a simplified schematic representation to understand how an operating system works. Operating System: It's a linguistic device, a design, diagram, representation, sign, or code formulated so that people can understand how an operating system works. In practice, the actual operation is more complex than this representation. Hardware Level: The hardware level is the lowest layer of abstraction, representing the physical part of the computer. It includes the CPU (central processing unit), memory, and devices/peripherals. This layer is fully interconnected with the more physical aspect of the computer. Kernel - Operating System Core: The kernel is software that operates between known applications and the hardware. It operates in memory, the processor, and within the machine's circuits without being visible. It works behind the scenes of the operating system, listening to hardware and software to mediate and circulate data. Application Level: The application level represents the software we use, including the graphical user interface (GUI), applications, and utilities for computer maintenance. These are the three main types of software: operating, application, and utility. It is the entirely logical part with a high-level programming language. Types of Operating Systems: There are two types of operating systems: special-purpose and general-purpose. General-purpose systems allow for a finite but very large number of tasks. Special-purpose systems handle a limited number of specific tasks. Operating System Execution: Input, Processing, and Output: Three fundamental steps for the functioning of the operating system: input, processing, and output. This model is present in various areas of humanity and represents the human capacity to transform the surrounding space using tools. It is a systematic behavior pertinent to human beings throughout history.