15 hours 34 minutes

Video Description

Welcome to the free Cybrary online course for the Cisco Certified Network Administration (CCNA) professional certification. This introductory lesson will help you fully understand the concepts of Cisco's CCNA credential. The Cybrary CCNA course has 6 Modules. Each module is broken down by layer of the OSI Model, correlates the appropriate Protocols it relates to, and includes a series of labs to facilitate comprehension of each layers function, configuration, and process flow in real time. We explain in detail the origin of the OSI Model and summarize each of the OSI Model Layers, and then we outline the flow of the course beginning to end. There are also auxiliary topics that necessarily don't apply to particular OSI layer, so we'll explore those in greater detail at the end of the course during Module 6. So let's get started!

Video Transcription

Hi. My name is John Aid, and I'm going to be your CCN instructor for the week. For this course, we are going to break this class down according to the S I Layer model. For those a few who are not familiar with that with Tyler model, I'll be covering it shortly on the board. The way this class will be structured,
each layer of the outside layer model will be covered in depth with all the protocols that pertain to it.
There are some ancillary topics that do not fall exactly under any layer that are going to be covered at the end of the class or towards the end of the class.
So how about we get started?
In the beginning, when the Internet was new and people were just creating networks
let's suppose some people in America got together and created a network according to the rules and designs of what they thought was plausible.
And then at some point, somebody in another country say Japan came up with the same idea of creating a network,
and they did it according to their own rules and according to what they thought was possible
not in the future. If there came a time where the American network needed to talk to the Japanese network, the chances of the two networks inter communicating with each other are slim to none.
Hence, a governing body came out with a set of rules that apply globally that applied throughout the world. Now, this set of rules dictates how networks should be built and operated by everybody, which would
make it easier for in operability between networks. Now, this set of rules is called the open system Interconnect model or the S I lead model. So let's write down the layers included in the S I model open systems interconnect model or
the O
S. I model.
Now, the S I model is made up of seven layers. Layer one is your physical Lear to is your data link layer Layer three is your network. Lear Lear four is your transport. Lear five
is your session six is your presentation. And seven
is your application there.
The wear structure of this crisis
that I follow a layered approach.
So we're going to start with their one, and then we're gonna cover everything pertaining to live one. Then we're gonna go to later, too, and cover any everything pretending to live two and so on and so forth. Now, as a network engineer with the CCN A, your life will revolve around.
They're 23 and four
off course. You don't want to work in their one because you don't want to be the cable guy. After you get your CCNET,
we're going toe
do a little bit of application layer stuff. Those ancillary topics that I talked about at the end of the class.
There's five in there. Six, unless you are a programmer, has nothing to do with you.

Up Next

Cisco CCNA

Our free, online, self-paced CCNA training teaches students to install, configure, troubleshoot and operate LAN, WAN and dial access services for medium-sized networks. You'll also learn how to describe the operation of data networks.

Instructed By

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Junaid Memon