Networking & Linux Hub

Sunday, 26 April 2015

MESH TOPOLOGY

Mesh Topology:- As the diagram shows every node is connected to each other and the cable use to connect these nodes is Twisted pair cable. Communication can be slow in this kind of topology, because no such device or technology is used in this network so that can manage the communication channel. According to the design of this topology we can say this is expensive.

STAR TOPOLOGY

Star topology :- A star topology is designed with each node directly connected to the central device that can be a Switch or could a Hub.

This topology is very easy to install as you can see in the diagram, also easy to detect fault.

This kind network topology require more wire then Bus topology.

Here is a drawback of this topology is that if the central device stop working by any reason

than the whole network will stop. This network topology is more expensive than Bus topology.

RING TOPOLOGY

RING TOPOLOGY :- This topology is like ring like design,

In this topology communication takes place through token ring. The token ring can be clock wise or anticlockwise. In this topology we use two token ring primary and secondary, one will be clockwise and other will be anticlockwise. The connecting medium is used here twisted pair cable.

Thursday, 23 April 2015

NETWORK TOPOLOGIES

Topologies means any kind of designs that how we made our design understandable to the user or the people who want to understand our design of anything. Same thing is happening here in the IT world, there are many kind of network topologies.

BUS TOPOLOGY :-

TERMINATOR:- In bus network topology terminator are used to absorb the signals.

BNC:- Bayonet Neill–Concelman, this connector is used to quick connect or disconnect radio frequency in coaxial cable.

BACKBONE CABLE:- The central cable is called the backbone cable.

This topology is very easy to install and also easy for foult finding. If the backbone cable get breaked than whole the network will stop. This is the main disadvantage of this network.

NETWORK TYPE

I have already told you about network and networking. So now today we are going to understand the different types of Network.

LAN :- LAN is the short form of Local Area Network. It is a network in which distance matter a lot. In a small organization LAN network is used. As the name says local area network means the network is only used locally.

There are further many types of LAN

PAN:- Personal Area Network this network is so much limited its area is only 1 meter to 3 meter. This kind of networks are only used at homes most of the time.

SAN:- Storage Area Network, Any work performance by the user is stored in the backend is called storage area network.

WLAN:- Wi-Fi LAN this is a wi-fi and its range is about 50-60 meters usually.

CAN:- Campus Area Network. This kind of network is used in collages and university campus.

MAN:- Metropolitan Area Network. This kind of network covered a city, mean the distance of this network is larger than other. Examples of this network is wi-max, cable TV and Bangalore city.

WAN :- Wide Area Network, as the name itself says that this network cover all over the world.

LAN is further divide into two types

WORKGROUP :- In it connection is point-point and no centralized control is present.

DOMAIN:- In this kind of network communication takes place by the centralized control, means there are server and client technology used.

Connection Medium

Medium is any thing that is used to connect two or more devices each other, that can be wired or wireless.
WIRED & WIRELESS MEDIUM :-
Wired medium is secured, faster and also costly than wireless medium. Range of wired medium is more than wireless because wireless devices has limitation of range but wired medium can be spread as our own choice as I mentioned above wired medium is costly this one is also a big reason of to be costly.

the upper on is WIRED and lower one is WIRELESS

I hope I have make clear myself about wired and wireless mediums.