It 205 Topologies

It 205 Topologies

Bus Topology                                  
Bus networks connect all devices by using a cable. The ends of the cable must have “terminators” that absorb the signal so that it doesn’t bounce back toward where it originated. The signal in a bus topology is transmitted in a straight line.
The cable is shared communication medium that devices can attach to by using an interface connector. Devices are able to communicate with one another on the network, and do so by sending a message through the cable. When a message is sent all of the devices are able to see the message but only the intended recipient is able to accept and read the message.
The bus, or cable, is a long yellow cable called Thicknet-10 Base 5. The connection from the devices to the cable is black and is called Thinnet- 10 Base 2 or coax cable. These cables have become obsolete because of the demand for high-speed networking and the low cost of Cat-5 cables.
The pros of bus topologies are that they do not require as much cabling as the alternative options, they are less expensive, and are also easier to set up. The downside to bus networks are that they work best when there are a limited number of devices connected to it. When a large amount of computers are connected to the network bus performance issues can occur. Another downside is that if multiple machines attempt to access the same information at the same time data crashes may occur. Also, if the main cable is damages then the entire network becomes useless.

Ring Topology
The Ring topology is similar to the Bus topology due to the fact that the devices are connected though a single cable. The difference between the two is that the Ring topology does not use “terminators” because the signal is sent in a circular motion not a straight line. The devices are connected in a continuous circle, the signal moves in a loop, and passing through the computers on the network. The computers boost the signal and send it onto the next...