Sunday, 1 October 2017

NETWORK TOPOLOGY








 Network Topology 


Network topology is: the arrangement of a network, including its nodes and connecting lines. There are two ways of definingnetwork geometry: the physical topology and the logical (or signal) topology.
   

      There is a few types of topology, such as 
  • Star Topology 
  • Bus Topology 
  • Ring topology 

                                          

STAR TOPOLOGY 

examples of star topology 
STAR TOPOLOGY : all the computers and other devices on network connect to a central device, thus forming a star. 
=> There are two types of devices that provide a common central connection point to all the other devices on the network are  a hub and a switch.

BUS TOPOLOGY

BUS TOPOLOGY : a network setup in which each computer and network device are connected to a single cable or backbone

RING TOPOLOGY 


RING TOPOLOGY : computer network configuration where the devices are connected to each other in a circular shape. Each packet is sent around the ring until it reaches its final destination.Then, connects each PC to two other PC’sin a ring formation. Each PC is set up to pass data from one machine to the next in this relay type of system. Each computer has an in and out port. 

 Comparision Of The Network Topology 



ADVANTAGES & DISADVANTAGES 



THANKS YOU !





Monday, 25 September 2017

What is internet ?

Internet


💗💗💗  What is INTERNET ? 💗💗💗

There are three broad categories of network namely Internet, Intranet and Extranet. 
The internet is the biggest world-wide communication network of computers.
Internet is a worldwide collections of networks that link millions of businesses, government, agencies, educational institutions and individuals. 

The origins of the Internet date back to research commissioned by the United States Federal Government in the 1960s to build robust, fault-tolerant communication via computer networks.[1] The linking of commercial networks and enterprises in the early 1990s marked the beginning of the transition to the modern Internet,[2] and generated rapid growth as institutional, personal, and mobile computers were connected to the network. By the late 2000s, its services and technologies had been incorporated into virtually every aspect of modern life.

Today, people can pay money to access the internet from internet service providers. Some services on the Internet cost nothing to use. Sometimes people who offer these free services use advertising to make money from them.

ADVANTAGES OF INTERNET

  1. Information, knowledge, and learning
  2. Connectivity, communication, and sharing
  3. Address, mapping, and contact information
  4. Banking, bills, and shopping
                     DISADVANTAGES OF INTERNET 

1. Public Safety 
2. Health Risks 
3. Violation of Privacy