NETWORK ARCHITECTURE
NETWORK TOPOLOGY
BASIC NETWORK



BUS NEYWORK TOPOLOGY

  • a bus network consists of a single central cable(backbone/trunk) to which all computers and other devices connect(node)

LOGICAL TOPOLOGY OF BUS NETWORK


  • In a bus network it transmit data, instructions and information asa series of signal but only the intended recipient will accept the signal and the rest will ignore.

ADVANTAGES OF BUS TOPOLOGY

DISADVANTAGES OF BUS TOPOLOGY

Failure of one device usually does not affect the rest of the bus network

The network will be malfunctioned if the single central cable break down

Inexpensive and easy to install

It is difficult to identify the problem if the entire network shut down








RING NETWORK

 
  • on a ring network a cable forms a closed loop (ring) with all computers and devices arranged along the ring

LOGICAL TOPOLOGY OF RING NETWORK
  • Data transmitted on a ring network travels from device to device around the entire ring, in one direction (clockwise or counterclockwise) until it reach its destination  by using token
  • Token passing is one method for sending data around a ring
  • Each devices takes a turn sending and receiving information through the  use of a token
  • Token is a special series of bits that functions like a ticket

ADVANTAGES OF RING TOPOLOGY

DISADVANTAGES OF RING TOPOLOGY

All the computers have equal access to the resources in the network

The network will be malfunctioned if the device (pc/device) or cable break down

Cable faults are easily located, making troubleshooting easier

A ring network can span a larger distance than a bus network but it is difficult to install






STAR NETWORK

  • all the computers and other devices on the network connect to a central device (hub/switch), thus forming a star


LOGICAL TOPOLOGY OF STAR NETWORK
  • In a star network data instruction and informations transfer from one node to another node passes through hub/switch

ADVANTAGES OF STAR NETWORK


DISADVANTAGES OF STAR NETWORK

If one device (pc/printer) fail only that device is affected

The network will be malfunctioned if the single hub/switch break down

Easy to troubleshoot and isolate problem

Requires more cable than most of the others topologies