### Discussion :: Networking - Section 5 (Q.No.37)

James said: (Nov 3, 2016) | |

Why? Please, Can anyone explain it? |

Rupali said: (Jan 5, 2017) | |

It's star network. Mesh requires n(n-1) /2. |

Shannu said: (Aug 20, 2018) | |

Here, it is asked for a number of ports not physical channels. So, n-1 is the correct answer. |

Saba said: (Sep 22, 2018) | |

If suppose, N number of devices are connected with each other in a mesh topology, the total number of ports that is required by each device is N-1. Assume there are 5 devices connected to each other, hence a total number of ports required is 4. If suppose, N number of devices are connected with each other in a mesh topology, then a total number of dedicated links required to connect them is NC2 i.e. N (N-1) /2. In Figure 1, there are 5 devices connected to each other, hence a total number of links required is 5*4/2 = 10. |

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