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<v ->In this section, we're going to talk about</v>



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some of the different devices that make up our networks



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and some of the different attacks



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that are used against them.



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But before we do that, we're going to cover quickly



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the basics of the network by going through the OSI model.



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Now, in this section of the course,



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we're going to do this as a quick review



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because you should have already learned



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the OSI model and the basics of networking



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back when you studied Network+, which is recommended



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before you take the Security+ exam.



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Now, if you haven't gone through



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the Network+ course already,



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I highly recommend you go back and review that content



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before taking the Security+.



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Whether you take the Network+ certification exam



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or not, the information contained in that curriculum



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is really important to understand



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so you can better understand the security



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that we're talking about throughout this course.