OSI Model. GET COMPTIA SECURITY+ THROUGH TRYHACKME. (Part 3)

In this article, you can follow me as I am a complete beginner, and I am trying to become an Ethical Hacker. The first stop of my journey is CompTIA Security+ Certification (SY0–701). This process is divided into two parts. The first part contains rooms and CTFs from TryHackMe (!!!Some of the rooms are free and some of them have subscriptions). The second part is based on the Udemy course: “CompTIA Security+ (SY0–701) Complete Course & Exam” — (CompTIA Security+ Complete Training Course & Practice Exam | Udemy). The Final part is taking the exam: CompTIA Security+ ( SY0–701) Voucher — CompTIA Marketplace.

OSI Model (TryHackMe | OSI Model)

TASK 1. What is the OSI Model?

The OSI model (or Open Systems Interconnection Model) is an absolute fundamental model used in networking. This critical model provides a framework dictating how all networked devices will send, receive and interpret data.

One of the main benefits of the OSI model is that devices can have different functions and designs on a network while communicating with other devices. Data sent across a network that follows the uniformity of the OSI model can be understood by other devices.

The OSI model consists of seven layers which are illustrated in the diagram below. Each layer has a different set of responsibilities and is arranged from Layer 7 to Layer 1.