Questions and Answers
What is the main advantage of a star topology?
If a computer fails or the cable is broken, other computers are not affected.
Describe the disadvantage of a ring topology.
If one computer fails or there's a cable break, all data flow is disrupted.
What is the main disadvantage of a bus topology?
Requires termination at both ends to function.
Explain the advantage of mesh topology.
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How does a star topology handle failures differently from a ring topology?
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What is the distinguishing feature of a bus topology compared to other wired topologies?
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What is the main disadvantage of a wireless mesh topology?
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Describe the infrastructure topology and its main advantage.
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What is the main advantage of an ad hoc topology?
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Explain the main disadvantage of an ad hoc topology.
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What are wireless access points and why are they important in network connections?
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What differentiates wireless mesh topology from ad hoc and infrastructure topologies?
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Study Notes
- Topology is the explanation of how a network with various devices communicates.
- There are two main categories of topologies: wired and wireless.
- Wired topologies include star, ring, bus, mesh, and tree.
- Star topology: All computers are connected to a central point, such as a hub or a switch. All traffic goes through this central point before reaching its destination.
- Advantage: If a computer fails or the cable is broken, other computers are not affected.
- Disadvantage: If the central hub or switch fails, all computers connected to it are affected.
- Ring topology: Each computer is connected to two other computers in a closed loop or ring. Each data packet moves around the ring until it reaches its destination.
- Advantage: Easy to install and troubleshoot.
- Disadvantage: If one computer fails or there's a cable break, all data flow is disrupted.
- Bus topology: An old technology where all devices and network equipment are connected to a single cable or backbone.
- Advantage: Inexpensive and easy to implement.
- Disadvantage: Requires termination at both ends to function. A removed device or a lost terminator will cause the cable to be open and data flow to stop, which is known as terminator failure or singleton fault.
- Mesh topology: Each device in the network is connected to every other device in the network.
- Advantage: High fault tolerance since devices can communicate with each other even if some connections are down.
- Disadvantage: Expensive due to the large number of connections and network diagrams required.
- Wireless topologies include infrastructure and Ad hoc.
- Infrastructure topology: A combination of wired and wireless devices.
- Advantage: Draadless devices can connect to the network via a wireless access point that is connected to a wired network.
- Draadlose toegangspunte kan verskeie wees, afhanklik van die netwerkse behoeftes.
- Ad hoc topology: A simple wireless topology that does not rely on any infrastructure such as cables, routers, or wireless access points.
- Advantage: Easy to set up a wireless network without the need for an existing wireless network.
- Disadvantage: No central control and no security or permissions.
- Wireless mesh topology: Similar to wired mesh topology, where devices communicate wirelessly with each other.
- Advantage: Provides a seamless internet connection for wireless devices through multiple wireless connections.
- Disadvantage: Requires more planning and infrastructure than other wireless topologies due to the larger number of devices and wireless connections required.
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