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IT (What is the Internet?, Networks and Internet concepts, HTTP &…

- - - - The interesting about the system is that it's fully distributed.
        
        There's no central control that is deciding how packets are routed or where pieces of the network are built or even who interconnects with whom.
      - These are all business decisions that are made independently by the operators. They are all motivated to assure that there is end-to-end connectivity of every part of the network because the utility of the net is that any device can communicate with any other device; just like you want to be able to make phone calls to any other telephone in the world.
- - - - • Grid computing, distributed processing
      - • Ethernet, peer-to-peer (P2P)
      - • Local area network (LAN), wide area network (WAN), virtual LAN (VLAN), wireless LAN (WLAN), home network
      - Internet, intranet, extranet, virtual private network (VPN)
      - • Routers, switches, hubs
      - • Connection types: optical fibre, cable, wireless technologies such as wireless fidelity (WiFi), worldwide interoperability for microwave access (WiMax), Bluetooth, microwave
      - • Network operating systems and utility software
      - • Cloud computing
      - • Storage technologies: for example, SAN (storage area network), RAID (redundant array of inexpensive disks)
      - • Mainframe, supercomputers
      - Client, host, server
    - - Protocols
      - • Synchronous, asynchronous
      - • Remote access
      - • Bandwidth, broadband
      - • Bit rates
  - - - • Collaborative online tools: for example, wikis, blogs, RSS feeds, mashups, forums, social bookmarking,
      - online collaborative applications, podcasts, photocasts, vidcasts, social networking sites, templates,
      - virtual worlds and virtual learning environments
    - - Online advertising and marketing technologies: for example, banners, pop-ups, cookies
      - Push–pull technologies: for example, email newsletters
      - • Content management systems: for example, Moodle, Blackboard
      - E-commerce technology: for example, business-to-business (B2B), business-to-consumer (B2C), consumer-to-consumer (C2C), payment services, secure transactio
      - The World Wide Web Consortium (W3C) Internet threats and security
        
        Internet security: for example, firewall, proxy server, SSL (secure sockets layer), encryption, public and private keys, digital signatures
        
        Internet threats: for example, global viruses, hackers, spam, phishing, pharming, spyware, adware