Physical Topologies

PHYSICAL TOPOLOGIES

BUS TOPOLOGY AND RING TOPOLOGY

BUS TOPOLOGY

Dania in Tech (2015: 08) online says it is a network topology in which nodes are directly connected in common linear (or branched) half duplex link. Network cabling in which all computers and devices (nodes) are connected to a single cabling so that all nodes receive the message at the same time. Typically, the cable in the bus topology can have two terminals in there to dampen the signal so that it does not keep moving from one end to the other.

Linear or Distributed (types)

Linear implies that there is just one line associated with two distinct end points, whereas Distributed there may be more than one linear pattern connected to the network.

ADVANTAGES Dania (2015)  

·         Easy to implement and extend.

·         Well situated for temporary networks.

·         Initially less expensive than other topologies.

·         Cheap.

DISADVANTAGES Dania (2015)

·         Difficult to troubleshoot or administer.

·         Limited cable length and number of situations.

·         If there are problem with the cable, the entire network goes down.

·         Maintenance costs may be higher in the long run.

·         Performance degrades as add, frontal computers are added/ heavy traffic.

·         Low security (all computers on the bus can sell data transmissions).

·         One virus in the network will affect all of them (but not as much as ring or star network).

·         If one node fails, the whole network will shut down.

·         Proper termination id required.

·         If many computers are attached the amount of data flowing causes the network to flow down.

Bus topology: Jibesh Sitikhu

(2014) educatesansar.com/bus-topology-ethernet-protocol.html/