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24 Cards in this Set
- Front
- Back
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Network Toplogy |
Different ways that the connection between network devices can be arranged |
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Types of Topologies |
Bus Ring Star Mesh |
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Bus Network Topology Diagram |
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Bus Network Topology Arrangement |
Single cable (bus) at each end is a terminator Sent along the cable by electronic signals Only one message sent at one time Needs a system to deal with multiple devices sending data at once |
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Bus Advantages (2) |
Cheap to install as only one cable Easy to add extra network devices |
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Bus Disadvantages (4) |
Whole network can fail Difficult to identify fault Slower as you add more devices All devices receive all data (security risk) |
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Ring Network Topology Diagram |
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Ring Arrangement |
Connects devices in a closed loop/ring 'In' and 'out' connection Travel in the same direction, no collisions and passed till reaches the destination |
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Ring Advantage (2) |
Extra devices, dont affect performance Easy to add extra devices |
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Ring Disadvantage (4) |
Network fails is cable is cut or device fails Add device whole network is shut down Hard to find fault More expensive than bus |
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Star Network Topology Diagram |
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Star Arrangement |
Connected to central point (hub or switch) Sends directly to right recipient Most widely used Lots of cabling |
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Star Advantages (4) |
Damaged cable doesn't affect the rest of the network Security Easy to locate faults Easily add devices w/out closing |
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Star Disadvantages (2) |
Switch fails then network fails Expensive to install |
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Types of mesh |
Fully connected Partially connected |
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Fully connected mesh diagram |
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Partially Connected Mesh Diagram |
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Fully connected arrangement |
Every device connected to each other |
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Partially Connected Arrangement |
One device can connect to multiple other and some can connect to only one |
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Wired Network for Fully Connected |
Very expensive and difficult to implement |
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Wireless Network for Fully Connected |
Dont have a problem Easy |
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Fault Tolerant (mesh) |
Messages are routed around faulty device and connection even if multiple failure |
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Advantages of mesh |
Very fault tolerant, especially fully connected Very high performance, one device connected to multiple |
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Disadvantages of mesh |
Difficult and expensive Difficult to manage |
