ccna 200 301 syllabus definition college

ccna 200 301 syllabus definition college.The Internet is a classic example of a distributed WAN - an interconnected network of interconnected computers located in different geographic areas. There is another type of WAN, called a centralized WAN, which consists of centrally deployed computers or geographic locations to which remote computers and devices can be connected. Figure 1.5 gives an example where a remote office is connected to the main office of the company.1.2.3 Network architecture: end-to-end or server/clientNow that we know that network interconnection is a way to achieve resource and information sharing, how it is achieved depends directly on the unique architecture of the network operating system software. You need to know the two main types of networks: end-to-end (Peer.to-Peer) and client/server (Client/Server). By the way, it would be very difficult to figure out the difference between these two network types just by looking at the topology or viewing a live broadcast of the network in action; and the difference between end-to-end and client/server architectures is again huge. This difference is not just at the physical level, but also at the logical level. Read the following and you'll see what I mean.End-to-end networksThe computers connected in an end-to-end network don't have any central authority or special privileges - they are all peers (Peers). This means that when it comes to permissions, they are all the same. It also means that the computers that provide access to resources need to perform their own security tests to determine if the resource access request is reasonable.This also means that computers in an end-to-end network can either be clients, accessing resources in the network, or servers, providing resources to other computers in the network. This structure can work well if the number of users in the network is not huge; each user backs up data locally, and not much security is needed in the network.A network is an end-to-end network if it consists of Windows, Mac, or Unix in a local LAN workgroup. Figure 1.6 illustrates a typical end-to-end network. End-to-end networks also pose some problems, for example, backing up company data becomes a topic for discussion.I should clarify one thing now: end-to-end networks are not without disadvantages-backing up important company data is not only important, it's challenging. Suppose you need a document urgently, but you forget where it's stored (who hasn't had that happen to them?) What about that? Then we have to deal with security issues. Because security is not centrally controlled here, each (all) user must remember and maintain a list of usernames and passwords for each (all) machine. To make matters worse, sometimes the same user uses different passwords on different machines, or even different passwords when accessing different resources. Aiya!Client/server networksA client/server network is basically the exact opposite of an end-to-end network, because in a client/server network ,