Dr. Mark Humphrys

School of Computing. Dublin City University.

Home      Blog      Teaching      Research      Contact

Search:

CA170      CA216      CA249      CA318      CA651

w2mind.computing.dcu.ie      w2mind.org


Introduction to Networks




1.1 Uses of Networks

Might be easier to list things they can't be used for!
  1. Communication - Email was the 1st killer app of the Internet (1970s-80s)
    1. email
    2. chat, messaging, social networking
    3. VoIP, videophone, skype.com

  2. Access to info and services - Web was the 2nd killer app (1990s)
    1. text, news, research
    2. images, flickr.com
    3. audio, video, music, streaming radio and TV, youtube.com, IPTV
    4. programs, software archives, Windows Update

  3. Work
    1. Communication - email, messaging, videoconferencing, email mailing lists
    2. Collaboration - write docs in team, Google Docs
    3. Sharing info - stock database, customer database, Intranet (may be international internal network)
    4. Resource sharing - printers, scanners
    5. Universities - tele-learning
    6. Hospitals - tele-medicine
    7. Mobile workers - taxis, fleets, trucks, ships, aircraft, military
    8. B2B - parts from suppliers - Extranet
    9. Job search
    10. Virtual reality - 3D representation of a real city where you can see the real shops, restaurants, etc.

  4. Home
    1. Communication - email, chat, discussion groups, home pages, blogs
    2. Social networking - Facebook, Twitter
    3. Games
    4. Virtual reality - Second Life, which has a virtual Dublin
    5. Internet has revolutionised these industries:
      1. Music - piracy, pay-to-view, iTunes.
      2. TV and Movies - piracy, pay-to-view, Netflix.
        YouTube gives entirely new environment for TV and Movies - trailers always available, old clips, compilations, mash-ups, ads (none of these things could exist before).
      3. Dating
      4. Porn
      5. Gambling
      6. Healthy hobbies, like my hobby of Genealogy - pay-to-view remote access to databases
    6. Access to services - bank, tax
    7. B2C - selling online
      1. buying information - subscriptions, music
      2. buying objects by post - amazon
      3. buying tickets - travel, events
      4. research before buy - cars, houses
      5. online auctions
      6. customer support
    8. C2C - ebay
    9. Resource sharing - home network - share broadband Internet access
    10. Home LAN with all devices. e.g. Belkin WeMo.
    11. Family and friends Intranet

  5. How to navigate:
    1. follow links in pages
    2. type in URLs found offline
    3. search - Google, Yahoo
    4. Top 100 most popular websites in Ireland
    5. Top 500 most popular websites


Nice summary of how the Internet is changing our lives:





Feeds      HumphrysFamilyTree.com

Bookmark and Share           On Internet since 1987.