WHAT ARE THE TYPES OF NETWORKS AND ITS EXPLANATION

-

 A computer network may span any account of geographical area. It can be on a table, in a room, in a building, in a city, in a country , across continents or around the world. On the basis of the area covered, computer networks are classified as:

  • PAN - Personal Area Network 
  • LAN - Local Area Network
  • MAN - Metropolitan Area Network
  • WAN - Wide Area Network

PERSONAL AREA NETWORK

PAN is a network of communicating devices (computer, mobile, tablet, printer, etc.) in the proximity of an individual. It can cover an area of a radius with few meters.


When we transfer songs from one cell phone to another or from a PC to an MP3 player, a PAN is set between the two. PAN can be set up using guided media (USB) or unguided media (bluetooth, infrared)

LOCAL AREA NETWORK

LAN is a network of computing and communicating devices in a room, building, or campus. It can cover an area of radius with a few meters to few kilometers. A networked office building can contain a few small LANs (like some schools have independent LANs in each computer lab).  Occasionally a LAN can span a group of nearby buildings.



In addition to operating in a limited space, a LAN is owned, controlled and managed by a single person or an organisation. LAN can be set up using wired media (UTP cables, coaxial cables, etc.) or wireless media (infrared, radio waves, etc.) If a LAN is a setup using unguided media, it is known as Wireless LAN.


METROPOLITAN AREA NETWORK 

MAN is a network of computing and communicating devices within a city. It can cover an area of a few kilometers to few hundred kilometers radius. MAN is usually formed by interconnecting a number of LANs and individual computers. All types of communication media are used to set up a MAN. MAN is typically owned and operated by single entity such as a government body or a large corporation.


WIDE AREA NETWORK

WAN is a network of computing and communicating devices crossing the limits of a city, country or continent. It can cover an area of over hundreds of the meters in radius. WAN usually contain a number a number of interconnected individual computers, LANs, MANs and maybe other WANs. All types of communication method (guided and unguided) are used to set up a WAN. The best known example of a WAN is the Internet. Internet is considered as the largest WAN  in the world. A network of ATMs, banks, government offices, international organisations, offices, etc. spread over a country, continent or covering many continents are examples of WAN.

 



Comments

Post a Comment

Popular posts from this blog

BEST 5 LAPTOPS IN INDIA (AROUND Rs 50,000) AND ITS SPECIFICATION

-
Image
This is the list of 5 best laptops in India. This list can help you to choose perfect laptop. 1. acer Aspire 7  Display size : 15.60- inch Display resolution 1920x1080 Processor - Core i5 Touch screen - No RAM - 16 GB Operating system - windows 10 Hard disk - No SSD - 512 GB Graphics - Nvidia Ge Force GT x 1660Ti Weight - 2.15 kg Price in India - Rs 56,490  2. Asus Vivo book Gaming Display - 15.6 inches  Processor - Intel core i5 8th Gen 8300 H Performance - NVIDIA Ge  Force GTX 1650  RAM - 8 GB Weight - 2.14 kg Operating system - windows 10 Home Basic Touch screen - No Price in India - Rs 52,990 3. HP 15 Display size - 15.60 inch Display resolution - 1366 x 768 pixels Processor - APU Quad core RAM - 4 GB Operating system - windows 10  Hard disk - No SSD - 128 GB Weight - 2.90 kg Price in India - Rs 60,391 4. MSI Modern 14 Display size - 14.00 inch Display resolution - 1920 x 1080 pixels Processor - core i3 RAM - 8 GB  Operating system - Windows 10 SSD - 256 GB Graphics - intel HD  Wei
Read more

HISTORY OF THE INTERNET

-
Image
The Internet started as a small network through a project by the United States Department of defence by the name ARPANET (Advanced Research Projects Agency Network). During 1970s this military network was connected to the computers of universities and companies that worked for the department of defence. In 1984 the military network split from ARPANET which used TCP/IP protocol for communication was thereafter used for scientific research and information sharing. Later, several other network merged with ARPANET to form a large network.  ARPANET is considered as the first wide area network (WAN). Vinton Gray Cerf who was instrumental in the development of Internet and TCP/IP protocol, is considered as the father of Internet              In 1989, Tim Berners Lee , a researcher, proposed the idea of World Wide Web (WWW). Tim Berners Lee and his team are credited with inventing Hyper Text Transfer Protocol (HTTP), HTML and the technology for a web server and a web browser. Using hyperlink
Read more

WHAT IS SOCIAL MEDIA ? CLASSIFICATION, ADVANTAGES AND LIMITATIONS OF SOCIAL MEDIA

-
Image
  SOCIAL MEDIA All of us are familiar with wikipedia, the free encyclopedia in Internet. We have also heard about people responding to social issues through facebook, twitter, etc. Also we know that people use youtube to share videos and for promotion of products or business. All of these are part of social media which is changing the way we communicate, entertain and live. Social media refers to the use of mobile and web based technologies through which individuals and communities can create, share, discuss and modify content. In social media, interactions among people happen in virtual communities and network over Internet. These digital technologies influence the formation and activities of civil communities to a great extent. CLASSIFICATION OF SOCIAL MEDIA INTERNET FORUMS An Internet forum is an online discussion web site where people can engage in conversations in the form of posted messages. Each Internet forum will have sub forums which may have several topics. Each discussion o
Read more