Network Topologies



What is a Topology?



The physical topology of a network refers to the configuration of cables, computers, and other peripherals.





Types:





  • Linear Bus





  • Ring





  • Star





  • Mesh





  • Tree





  • Intersecting Ring





  • Hybrid





  • Irregular






Point to Point



The simplest topology is a permanent link between two end points is point to point.. In this technology a separate connection is made between two communication channels.





Bus Topology 



Network Topologies






Bus Topology is the simplest of network topologies. In this type of topology, all the nodes (computers as well as servers) are connected to the single cable (called bus), by the help of interface connectors. This central cable is the backbone of the network and is known as Bus (thus the name). Every workstation communicates with the other device through this Bus. 





A signal from the source is broadcasted and it travels to all workstations connected to bus cable. Although the message is broadcasted but only the intended recipient, whose MAC address or IP address matches, accepts it. If the MAC /IP address of machine doesn’t match with the intended address, machine discards the signal. 





A terminator is added at ends of the central cable, to prevent bouncing of signals. A barrel connector can be used to extend it. Below I have given a basic diagram of a bus topology and then have discussed advantages and disadvantages of Bus Network Topology







Advantages:


1)  It is easy to set-up and extend bus network.


2)  Cable length required for this topology is the least compared to other networks.


3)  Bus topology costs very less.


4) Linear Bus network is mostly used in small networks. Good for LAN.





Disadvantages:


1)  There is a limit on central cable length and number of nodes that can be connected.


2)  Dependency on central cable in this topology has its disadvantages.If the main cable encounters some problem, whole network breaks down. 


3)  Proper termination is required to dump signals. Use of terminators is must.


4)  It is difficult to detect and troubleshoot fault at individual station.


5)  Maintenance costs can get higher with time.


6)  Efficiency of Bus network reduces, as the number of devices connected to it increases.


7)  It is not suitable for networks with heavy traffic. 


8)  Security is very low because all the computers receive the sent signal from the source.




Comments

Post a Comment

Popular posts from this blog

Write a Program to Add two 3x3 Matrix using C

Image
#include<stdio.h> void main () { int a [ 3 ][ 3 ], b [ 3 ][ 3 ], s [ 3 ][ 3 ], i , j ; printf ( "Enter the values of 1st matrix" ); for ( i = 0 ; i < 3 ; i ++ ) { for ( j = 0 ; j < 3 ; j ++ ) { scanf ( "%d" , & a [ i ][ j ]); } } printf ( "Enter the values of 2nd matrix" ); for ( i = 0 ; i < 3 ; i ++ ) { for ( j = 0 ; j < 3 ; j ++ ) { scanf ( "%d" , & b [ i ][ j ]); } } for ( i = 0 ; i < 3 ; i ++ ) { for ( j = 0 ; j < 3 ; j ++ ) { s [ i ][ j ] = a [ i ][ j ] + b [ i ][ j ]; } } printf ( " \n The Sum is : \n " ); for ( i = 0 ; i < 3 ; i ++ ) { printf ( " \n\n " ); for ( j = 0 ; j < 3 ; j ++ ) { printf ( " \t %d" , s [ i ][ j ]); }
Read more

C program for Unit Conversion

Image
/* Convert Celsius to Fahrenheit */ #include<stdio.h> void main() {     float c,f;     printf("Enter the temperature in Celcius: ");     scanf("%f",&c);     f = c * 9/5 + 32;     printf("Temperature in Farenheit: %f",f); } /* Convert Farenheit to Celcius */ #include<stdio.h> void main() {     float c,f;     printf("Farenheit : ");     scanf("%f",&f);     c = (f - 32) * 5/9;     printf("Celcius: %f",c);  } /*Convert Meter to Feet*/ #include<stdio.h> void main() {     float m,f;     printf("Meter : ");     scanf("%f",&m);     f = 3.2808399 * m;     printf("Feet: %f",f); } /* Convert Feet to Meter */ #include<stdio.h> void main() {     float m,f;     printf("Feet : ");     scanf("%f",&f);     m = f / 3.2808399;     printf("Meter: %f",m); } /*Convert Km to M/cm/mm*/ #include<stdio.h> void main() {   float km;   char v;   float
Read more

Write a Program to Add two 5x5 Matrix using C

Image
#include<stdio.h> void main() {   int a[5][5],b[5][5],c[5][5];   int i,j;   for(i=0;i<5;i++)   {     printf("\nEnter elements of %d row of first Matrix: ",i+1);     for(j=0;j<5;j++)       scanf("%d",&a[i][j]);   }   for(i=0;i<5;i++)   {     printf("\nEnter elements of %d row of second Matrix: ",i+1);     for(j=0;j<5;j++)       scanf("%d",&b[i][j]);   }   printf("\nSum of Matrix:\n\n");   for(i=0;i<5;i++)   {     for(j=0;j<5;j++)     {       c[i][j]=a[i][j]+b[i][j];       printf("%3d ",c[i][j]);     }     printf("\n");   } }
Read more