ccna 200 301 bookstores

ccna 200 301 bookstores.The best network in this example is the LAN-switched network connected to the left side of the router. Why? Because each interface on the switch separates a conflict domain. But this isn't perfect - all devices still belong to the same broadcast domain. Do you remember the downside of all devices belonging to the same broadcast domain? The answer is that all devices must all listen to all broadcast traffic. If the broadcast domain in the network becomes too large, users have less bandwidth and have to deal with more broadcast traffic, and eventually the network's responsiveness is reduced to a level that users can't tolerate.Once a switch is used in the network, the situation changes dramatically! Figure 2.4 gives an overview of the common in today's networks2.1 Network Interconnection Basisarchitecture.Now I have the LAN switches at the center of the network, and the routers are just logically connecting the different networks together. In this implementation, I will create multiple VLANs (virtual LANs), which will be covered in Chapter 11, "Layer 2 Switching Technologies". It is good to have an impression now. Here's what you must know: Even if you deploy a switched network, you still need routers (or Layer 3 switches) to communicate between VLANs, or between networks. Don't ever forget this!Obviously, the best networks are those that are properly configured and meet the various business needs of the enterprise. The best network design is the one that deploys LAN switches and routers wisely in the network. This book will help you understand the basics of routers and switches so that you can synthesize multiple cases and make good and informed decisions.Back in Figure 2.3, how many conflict and broadcast domains are there in this interconnected network? Hopefully, your answer is 9 conflict domains and 3 broadcast domains! The number of broadcast domains is the easiest to determine because by default only the router can separate broadcast domains. Since there are 3 connections on the router, that divides 3 broadcast domains as well. How were the 9 conflict domains determined? If you didn't find out, see the following analysis. The network connected by the hub belongs to one conflict domain; the bridged network equals 3 conflict domains; and the switched network has a total of 5 conflict domains ---------------- one conflict domain for each switch interface - so there are 9 conflict domains in total.Going back to Figure 2.4, each switch interface is a separate conflict domain, and each VLAN is a separate broadcast domain. But you still need routers to implement inter-VLAN routing. How many conflict domains are there here? I counted 10-remember, the connections between the switches are also a separate conflict domain!Real Love RaceShould you replace your existing 10/100 megabit switch?