unit 1 - the online world

learning aim B components of the internet
1. data exchange
  1. data might be transmitted by transferring a data file from oner user to other
  2. VOIP (voice over internet protocol)
2. Data storage
  1. database storage is where database files are stored
  2. online databases are places on the internet that you can store your data on the internet
  3. DBMS is database management system
  4. relationship data storage is where multiple data bases are in the same databases
3. the internet
  1. email
    1. address book, bcc is blind carbon copy and cc is carbon copy
    2. benefits of bcc are that you can send it to any one without the others knowing about it and cc saves time
    3. drawbacks of both of these . i don't know any
  2. internet infrastructure
    1. a router is a device that forwards packets of data between computer networks
    2. a client is a piece of computer hardware or soft ware that accesses a service made available by a server
    3. a server is a running instance of an application capable of accepting requests from the client
  3. world wide web
    1. HTML (hyper text markup language)
    2. URL'S uniform resources locator
    3. search engine are things like google and bing
    4. ISP'S (internet service provider)
  4. internet connection methods
    1. dialup is where you connect through the phone lines
    2. wireless is where you don't need any wires as said in the name
    3. broadband is where the cables go through the road
learning aim A: online services and communication.
1. online advertising
  1. banners: banners are a way of advertising products or web sites in places that people will see it
  2. email marketing is where a company send you an email advertising their product
  3. pay per click is when a company gets paid for every click on their advert
  4. drawbacks to online advertising is that it is expensive and it annoys people
  5. benefits of online advertising are that the companies make allot of money
2. ubiquitous computing
  1. RFID is radio frequency identification
3. online services
  1. real time computing are things like train times online
  2. communication online is things like Skype where you can talk to any one any ware around the world whenever you want
  3. online entertainment is things like youtube where you can access entertainment any were you want as long as you have have wifi
4. online documents
  1. compressing files allows you to transfer large amounts of data quickly
  2. benefits are things like allowing you to transfer your data quickly
  3. drawbacks are things like it is not always safe
  4. to compress a file you have to shrink it all down in to o e file so that it is quicker to send then you expand it out to its original size to access it again
learning aim C: issues with operating online.
1. personal safety: to increas your personal safety you can make your password safer.
  1. identity theft: to prevent identity theft you can avoid it by not having your personal detail on the internet
2. preventative and remedial action.
  1. fire walls: a fire wall is something that processes what goes in and out of your computer to prevent viruses and hackers
    1. access levels: to improve your access levels you can make a longer or more difficult pass word.
    2. anti-virus software: is something that prevents a computer virus either entering or spreading around your computer.
    3. Encryption: encryption is a way of stopping people hacking your data because without the right encryption key it will male no sense
    4. Physical barriers: a physical barrier is something like a having a water poof computer
3. types of threats to data.
  1. malware is another version of a virus which does not spread itself around your computer
  2. viruses are something that get in to your computer and corrupt data and files

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unit 1 - the online world

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	Created by bentayler over 11 years ago