network typologies

Network Topology - arrangement of internet where device supposed to be


two type of network topology:
1. Logical - how device appear to be connected to each other example; packet tracer.
2. Physical- actual interconnection with wire and cables(actual connected).

point-to-point: 

two device directly connected together

figure 1(point to point topologies)

example; can be PC and PC, PC to switch
+ sending information is faster
+ no traffic
- cannot connect more device
- the cable broke will affect the others.

BUS

use (1 backbone) 1 cable connected to several devices (it can be PC, Printer, laptop)

 

figure 2(BUS topology)

+not expensive because only use one cable
+easy to install another device
-if one PC is broke it will affect others, because of using 1 cable.
-there will be traffic if many hosts want to send information at the same time.

STAR

it uses a switch, hub or a router in the middle to connect to any device

                                                             figure 3(star topology)
+no traffic because 1 nodes have it own connection
+if 1 damage, it will not affect the others
- time-consuming to install
-if the switch is broke, there will be no connection to the devices.

RING

directly connected to each other, in a form of a circle

figure 4 (ring topology)

+faster sending message
+adding PC won't affect the network
-no privacy
-only one PC can send 1 data at a time

MESH

the host connect to multiple hosts

figure 5(mesh topology)

Two type of mesh:
1.full mesh: all device connected
2.partially mesh: not all device connected to each other
+one cable broken won't affect the others
+ many paths to pass the message
-hard to install
-expensive

TREE

brunches, also known as Hierarchical Topology. this type of typologies is the most common form of network topology.

figure 6(tree topology)

+faster to send a message
+easy to set up other PC
-expensive to set up
-if the distribution layer is broken all the user cannot access the network.