ccna 200 301 syllabus definition and example of onomatopoeia

ccna 200 301 syllabus definition and example of onomatopoeia.Fault tolerance, by the way, is the ability of a computer or network system to respond automatically to unexpected situations (usually to resolve them) and reduce the impact of unexpected situations on the network. If the network is properly implemented withfault-tolerant mechanism, then in the event of a problem, it is highly likely that none of the network users will be aware that a problem has ever occurred.1.3.2 Star Topology and Extended Star TopologyComputers in a StarTopology are connected to a central point through their own cables or wireless connections. You will find that the central point device is often a hub, switch, or access point.Star topologies have more advantages than bus topologies, so they are far more widely used than bus topologies, even if they require the use of more physical media for connectivity. The best feature of the star topology is that since each computer or segment is connected separately to the central device, if a cable fails, only a single device or segment is affected. This is a really good sign, the network gains more fault tolerance and the troubleshooting is much easier. Another great benefit of the star topology is the increased scalability of the network - when adding devices or segments to the network, you only need to connect the devices to the star core with a new cable. A typical star topology is depicted in Figure 1.9.Although this topology is called a star topology, imagine that it looks more like this shape when people are depicting the sun (the sun is also a star, but it definitely looks different than how we describe it, right?). You could also put it another way and say that the star structure looks like the wheel of a bicycle, with the spokes of the wheel attached to the central axle at one end and extending outward at the other. And like the wheels of a bicycle, if the central point device of a star network fails, you're in big trouble. If the hub in the center always fails, the whole network is down more often than not, so making sure the hub doesn't fail too often is essential!Like any other physical object, a star topology has advantages and disadvantages, but the advantages are far more important than the disadvantages, which is why people are increasingly choosing to use a star topology. Using a star topology results in the following benefits. Easily and quickly add new workstations.Failure of a single cable does not affect the entire network.Relatively easier to troubleshoot.