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hello everyone my name is vijay kumar Devireddy and i am glad to have you back on my episode 48 today we are discussing about In this episode, we're going to talk about some of the different devices that make up our networks and some of the different attacks that are used against them.But before we do that, we're going to cover quickly the basics of the networks by going through the OSI model.Now in this section of the course,we're going to do this as a quick review because you should have already learned the OSI model and the basics of networking or not, the information contained in that curriculum is really important to understand so you can better understand the security that we're talking about throughout this week.