-: In this section, 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 network 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
back when you studied Network+, which is recommended
before you take the Security+ exam.
Now, if you haven't gone through
the Network+ course already,
I highly recommend you go back and review that content
before taking the Security+.
Whether you take the Network+ certification exam
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 course.