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digital media
Fichas del conjunto (18)
- 1Physical TopologyThe physical layout of devices on a network and how the cables and wires connect these devices.
- 2Logical TopologyHow data is transmitted and received between devices on a network regardless of their physical connections.
- 3TopologyThe way in which the devices (nodes) are connected.
- 4NodeA device that is connected to the network.
- 5Example of nodesComputers, printers, hubs, switches and routers.
- 6Physical 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.
- 7Advantages of Bus TopologiesLess cable required than in other topologies.
- 8Disadvantages 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 - 9Physical 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.
- 10Advantages of Ring TopologiesThere are dirty jokes that can be made about it...If you're feeling particularly inventive.
- 11Disadvantages 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 - 12Mesh topologyThese include more than one physical path between pairs of nodes. Routers are required for mesh topologies.
- 13Advantage of Mesh Topologiesault tolerance, as packages are automatically routed around faults.
Can be used in high-speed long distance connections - 14Disadvantages of Mesh TopologiesRouters are required to direct each datapacket
- 15Physical 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.
- 16Advantages 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 - 17Disadvantages of Star TopologiesA lot of cabling is required
If a fault occurs in the central node then all connected nodes are also disabled - 18—
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- Fichas sobre digital media, creado por 11.carroll el 25/09/2015.
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