Question

You must implement a network in a university campus. Please refer to the questions below and answer which network and topology will be best suits for the below scenarios. 1. A 5 story Building dedicated for IT department out of which 3 floors need Internet connection the remaining 2 do not required any connection of internet and used for hardware storage purpose. Network Type _____________________ Topology Type _______________________ 2. A single unit for admin purpose requires less speed internet than of IT dept but all the internet series provided is in linear position. Network Type _____________________ Topology Type _______________________ 3. A library comprises of Digital access as well. Accompany by the Engineering labs which also required internet. Network Type _____________________ Topology Type _______________________ 4. All the internet is connected via server which isn’t situated in the same vicinity. Network Type _____________________ Topology Type _______________________ 5. Classroom which required normal internet connectivity for daily lecture work. Network Type _____________________ Topology Type _______________________

Answer 1

Answer:

Types of Network Topology

The arrangement of a network which comprises of nodes and connecting lines via sender and receiver is referred as network topology. The various network topologies are :

a) Mesh Topology :

In mesh topology, every device is connected to another device via particular channel.

Figure 1 : Every device is connected with another via dedicated channels. These channels are known as links.

If suppose, N number of devices are connected with each other in mesh topology, then total number of ports that is required by each device is ? N-1. In the Figure 1, there are 5 devices connected to each other, hence total number of ports required is 4.

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

Advantages of this topology :

It is robust.

Fault is diagnosed easily. Data is reliable because data is transferred among the devices through dedicated channels or links.

Provides security and privacy.

Problems with this topology :

Installation and configuration is difficult.

Cost of cables are high as bulk wiring is required, hence suitable for less number of devices.

Cost of maintenance is high.

b) Star Topology :

? In star topology, all the devices are connected to a single hub through a cable. This hub is the central node and all others nodes are connected to the central node. The hub can be passive ?in nature i.e. not intelligent hub such as broadcasting devices, at the same time the hub can be intelligent known as active ?hubs. Active hubs have repeaters in them.