ccna 200 301 syllabus definition and example

ccna 200 301 syllabus definition and example.-Fault tolerance requirementsNetwork BackboneToday's networks can be designed to be very complex, so when describing each part of the network, we need to have a standard to express exactly what we mean. This is the reason for dividing the network into different parts: the Backbone and the Segment oIn the network shown in Figure 1.16, the backbone part and the segment part are clearly pointed out.As you can see from the figure, the network backbone is actually a bit like a human being itself. The backbone connects all the network segments and servers and forms the structure of the network. As you can imagine, being such an important nerve center, the backbone must use very fast and robust technology, usually Gigabit Ethernet, and in order to optimize network performance (i.e., speed and efficiency), it may be necessary to connect all network servers and segments directlyOn the network backbone. Network segment serverWhen we speak of a network segment, we can refer to any part of the network that is connected to the backbone or to any part of the network that is not the backbone. For example, a workstation in the network connects to its server, which in turn connects to the network backbonetrunk. This scenario is well depicted in Figure 1.16, which includes three network segments.This chapter has given you a solid foundation for learning the rest of the book. You learned what a network (actually) is, and you learned some of the components needed to construct a network-routers, switches, and hubs-and understood their role in the network.Figure 1.16 The backbone and segments of a network It's not enough to have these components that make up a network; you also learned about the different types of network connections, such as end-to-end and client/server. In turn, you learned about the different types of logical and physical network topologies, as well as the characteristics of each topology and its advantages and disadvantages. We also focused on network backbones and segments, and told you what questions to ask when choosing the right network topology.