Network topologies

• What is topology in networking?

  It is the layout of the network.
• Which two topologies are important to know for the exam?

  Star and Mesh topologies.
• What is a Star topology?

  • All devices connected to a central hub.
  • Central hub manages data traffic.
  • If one device fails, others remain unaffected.
• What is a Mesh topology?

  • Devices are interconnected.
  • Provides multiple paths for data.
  • If one connection fails, others can be used.
• In a Star topology, how are devices connected?

  All devices are connected to a central hub.
• What happens if a device fails in a Star topology?

  Other devices remain unaffected.
• In a Mesh topology, what is a key feature?

  Devices are interconnected with multiple paths.
• What is the effect of a connection failure in a Mesh topology?

  Other connections can still be used.
• In a Star topology, what controls the network?

  The central hub.
• What is a disadvantage of a Star topology?

  If the central hub fails, the network fails.
• What is a disadvantage of a Mesh topology?

  It can be expensive due to cabling.
• What is a key characteristic of a Bus topology?

  All devices share a single communication line.
• What happens if the main cable fails in a Bus topology?

  The entire network goes down.
• What is a key characteristic of a Ring topology?

  Devices are connected in a circular fashion.
• What happens if one device fails in a Ring topology?

  The entire network can be affected.
• Compare Star and Mesh topologies.

  Star Topology:

  • Central hub controls the network.
  • If hub fails, network fails.
  • Easier to manage and troubleshoot.

  
  

  Mesh Topology:

  • Devices interconnected with multiple paths.
  • More resilient to connection failures.
  • More expensive due to cabling.
• Compare Bus and Ring topologies.

  Bus Topology:

  • All devices share a single communication line.
  • Failure of main cable affects the entire network.
  • Simpler and cheaper to set up.

  
  

  Ring Topology:

  • Devices connected in a circular manner.
  • Failure of one device can affect the whole network.
  • More complex to troubleshoot.
• What is a potential issue with a central switch in a network?

  If it fails, the whole network is affected.
• Why might a network be expensive to set up?

  Due to the number of devices and connections.
• How does data transmission differ in a Star topology compared to a Bus topology?

  Star uses a central hub, Bus shares a line.
• How does data transmission differ in a Mesh topology compared to a Ring topology?

  Mesh has multiple paths, Ring is circular.
• What is the impact of data collisions in a network?

  They slow down network performance.
• What is a common feature of wired networks?

  They use physical cables for connections.
• What is the role of a network switch?

  It connects devices within a network.
• How does the failure of a device affect a network's performance?

  It can disrupt communication and data flow.
• What is the significance of redundancy in network design?

  It ensures network reliability and availability.
• What is a disadvantage of using too many devices in a network?

  It can lead to increased complexity.
• Why is it important to understand different network topologies?

  To choose the best design for specific needs.
• What does data collisions cause in a network?

  They slow down the network
• In a ring topology, how does data move?

  Data moves in one direction around the ring
• What prevents collisions in a ring topology?

  Data moves in one direction
• How many devices can send data at a time in a ring topology?

  Only one device can send data
• What happens when a device fails in a ring topology?

  Data cannot reach its destination
• What is a meshed topology?

  All devices are connected to each other
• What is a key feature of a meshed topology?

  Devices are interconnected
• What is the main advantage of a meshed topology?

  No single point of failure exists
• What is a disadvantage of a meshed topology?

  It is expensive to implement
• What is a partial meshed topology?

  Not all devices are fully interconnected
• What is a full meshed topology?

  Every device is connected to every other device
• How does a partial meshed topology differ from a full meshed topology?

  Partial has some devices interconnected