In this section of the course,
we're going to discuss ethernet switching.
Now as we move into our coverage of ethernet switching,
we're going to be focused heavily on layer two of the OSI model
because layer two is where switching occurs
within a local area network when you're using ethernet.
So as we start beginning our coverage of ethernet switching,
we'll be focused on domain one, networking concepts,
domain two, network implementation,
and domain four network security.
We'll be briefly covering objective 1.2,
which states that you must be able to compare
and contrast networking appliances,
applications, and functions.
We'll also spend quite a bit of time in this section
exploring objective 2.2,
which states that given a scenario
you must be able to configure
switching technologies and features.
We'll also be briefly covering objective 4.3,
which states, given a scenario you must be able
to apply network security features,
defense techniques, and solutions.
We'll be specifically focusing on the use
of network access control
or NAC as our devices attempt to connect
to our ethernet networks.
Now first we're going to be looking at ethernet fundamentals,
including how ethernet gained its popularity
and how it works to move our data across our networks.
Then we'll be discussing network devices,
including things like switches
and how they evolve from layer one devices like hubs
by going into layer two devices like bridges,
and combining both of those things together
to get us layer two switching.
We'll also take a look at
the different kinds of network devices
that you may see out in the real world
as well as we do a demonstration.
Next, I'm going to teach you all about
virtual local area networks, known as VLANs,
and these are going to be used
to further subdivide our broadcast domains
into smaller and more manageable areas.
After that, we'll explore
the different configuration options
associated with virtual local area networks,
and then we'll be discussing the spanning tree protocol
known as STP, which is used to prevent switching loops
inside of our ethernet networks.
Next, we'll explore network access control
or NAC, which is used to provide some security
to our ethernet based layer two networks.
After that, we'll discuss the concept of an MTU
or a maximum transmission unit.
This includes the default size of a frame
and the maximum size of a frame
that can be transmitted overlay using ethernet.
Finally, we'll take a short quiz to see what you learned
during this section of the course and review your answers
to ensure you know why the right answers were right
and the wrong answers are wrong.
So if you're ready, let's get started with our coverage
of ethernet switching in this section of the course.