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- 1Topology-
- 2Physical TopologyThe physical layout of devices on a network and how the cables and wires connect these devices.
- 3Logical TopologyHow data is transmitted and received between devices on a network regardless of their physical connections.
- 4TopologyThe way in which the devices (nodes) are connected.
- 5NodeA device that is connected to the network.
- 6Example of nodesComputers, printers, hubs, switches and routers.
- 7Physical Bus topologyAll nodes are connected to a single backbone. The backbone is a single wire that carries data packets to the nodes. Terminators must be installed at the two ends of the backbones.
- 8Advantages of Bus TopologiesLess cable required than in other topologies.
- 9Disadvantages of Bus TopologiesUnable to accommodate a large number of nodes - such as those required for LAN's
A single break in the backbone disables the entire network - 10Physical Ring topologyEach node connects to exactly two other nodes, forming a complete ring, which generally circulates data packets in one direction. Each node receives data from one node and transmits to the other.
- 11Advantages of Ring TopologiesThere are dirty jokes that can be made about it...If you're feeling particularly inventive.
- 12Disadvantages of Ring TopologiesIf one cable is broken the entire network is disabled
To remove or add a node, the entire network must be stopped
All nodes must be powered at all times if the network is to operate - 13Mesh topologyThese include more than one physical path between pairs of nodes. Routers are required for mesh topologies.
- 14Advantage of Mesh TopologiesFault tolerance, as packages are automatically routed around faults.
Can be used in high-speed long distance connections - 15Disadvantages of Mesh TopologiesRouters are required to direct each datapacket
- 16Physical Star TopologyAll nodes connect to a central node via their own dedicated cable.The central node is the device that connects all outlying nodes such that they can transmit and receive packets to and from each other node.
- 17Advantages of Star TopologiesEach node had its own cable and can be connected and disconnected without affecting any other nodes
New nodes can be easily added without first disabling the network
The process of identifying faults is made more simple - 18Disadvantages of Star TopologiesA lot of cabling is required
If a fault occurs in the central node then all connected nodes are also disabled - 19Physical Hybrid TopologyAlso known as tree topologies. These use a combination of connected bus, star and ring topologies.
- 20Advantages of Hybrid TopologiesNew nodes can be easily connected
- 21Disadvantages of Hybrid TopologiesSingle transmission path between any two nodes
High costs for cables with high data transfer speeds
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- FlashCards sobre Sem título, criado por 12.robinson em 25-09-2015.
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