 So we see here there are a lot of options in the Cisco packet racer. So let's look at them one by one So basically there are a lot of devices among devices. You have network devices You have end devices end devices are usually computers servers That basically communicate over the network and the network devices are the ones which make communication possible Then you have new kind of devices like IOT devices, smart sensors, smart doors, Smart furnaces and all of those kind of devices Then each device has different kind of interfaces like the physical interface the user and the configuration interface Which we'll be looking at soon. Then there are different kind of connections by connections when we mean wires So we have optical fibers. We have LAN cables, which are basically called twisted pair copper wires and Then on the simulation Engine itself, which is our Cisco packet racer. We have modes of simulations Now we'll be talking more about these As we go further. So let's go back to packet racer and let's look at what are the different devices and how what are the different interfaces there? So if you look on the bottom left corner of the screen, so you can see Network devices all these icons here end devices network devices. So when you click on network devices, there are certain Routers which are shown here. So all you have to do is just pick one drop it here And that's how you place a router if you click on the router, you'll be able to see the router here So let's zoom in and see how it looks like. So here's a switch here are different ports of the router So this is what we call the physical appearance of a router and you could choose between different kind of interfaces You want to put on the router? for example, we have this empty slot here and we have Say we want four more ethernet ports. So we can just drag and drop. Okay, so you need to switch off the router before Adding any of the ports. So you switch off the router You add these ports and They get added. So now you have four more ports on the router So this is how actually this is original Cisco router looks like there are a number of them different models over here Then you have the different windows that we were talking about. So one of them is The configuration window. Yeah to do any configuration the router must be switched on So as you go into the configuration window what you see is these trailing hashtags So that means the router is booting up. So this is how our outer command line interface actually looks like so if you log into a router using a console cable and Use a terminal on your PC. So that's how basically how a router looks like So here you have all the different settings of a router the router's name host number the different type of routing properties The different network addresses all the things that you could configure inside those and then you have the command line Which actually simulates how a router's command line look looks like So let's go ahead and close this and let's look at say an end device So we can pick a PC over here and drag it here and when we click over it You see the physical appearance of the PC Then if you go to the configuration here, you can change the settings of the the network adapter of the PC Then if you look go to the desktop, it gives you all the kind of Software that are available usually on desktops. For example, you have this place where you can configure the IP address of the desktop This is just like a standard web browser So you type a URL and based on the URL it will go and contact the server in your virtual Network, so why not let's go and see actual Network that has been configured on Cisco packet test