BTECH 1 - 6

LESSON 2
1. online advertising - promoting a product, service or brand using the internet
  1. search engine results pages
  2. Banner / pop-up advertisements
  3. email marketing
2. pay-per-click advertising
  1. A form of online advertising where websites/pages host ads for other companies
    1. a surfer clicks on the ad and are directed to advertisers website
    2. website provider gets a payment for every ad that os clicked on
  2. uses an affliate model
    1. the affliate is the host website e.g. google
LESSON 3
1. Information exchanges
  1. Web logs
    1. frequently updated online journals with diary-like entries. typically has text, photos, videos
  2. Microblogging sites
    1. allow users to create and exchange short text entries
  3. WIkis
    1. websites that provide info which visitors can extend and edit.
  4. chatrooms
    1. online communication within communities is chat. large interactive communities where people take place in same conversations are chatrooms
2. Key Terms
  1. newsgroup
    1. site where groups of people with common interests can meet & write info
  2. conferencing
    1. groups of people in different areas meeting online to discuss matters
  3. Social networkking
    1. sites where you can meet and interact with people all over the world
3. VoIP
  1. allows people to interact in real time using voice or video messaging between any 2 points in the world
    1. reliability voice quality security
    2. low costs, less travel time, no cost of hiring venue
LESSON 4
1. Key terms
  1. upload
    1. moving a file from one system to another
  2. download
    1. moving files from a system to personal computer
  3. algorithm
    1. mathematical step-by-step sequence used to work out calculations
  4. version control
    1. way of tracking changes to documents & making sure you are working on up-to-date version
  5. Locked
    1. can't open a document when locked. only becomes unlocked when no users accessing document
  6. File permissions
    1. access rights granted to specific users
    2. Read-only
      1. user can only look at document
    3. Read/write
      1. user can read and change document
    4. Full controll
      1. users can retrieve, read, edit, add new document, archive/ delete existing doucment
2. Zip files
  1. files converted to these to compress and expand documents before and after trasnmission
    1. Winzip normally used
3. Online Software Packages
  1. can allow many people to share/ work on document at same time
  2. can access content wherever here is internet access
  3. can access content on different operating devices
LESSON 5
1. cloud computing
  1. using computer services on other organisation's computers (hosts)
2. cloud storage
  1. Cost and convenience
    1. only pay for storage you've used, don't have to provide and maintain hardware
  2. availability
    1. available anywhere with internet connection
  3. reliability of network
    1. need to be able to get through to host
  4. security of data
    1. files stored by host - no control over them
  5. software
    1. host may not be using latest most up to date version
  6. lower performance
    1. speed of retrieval of data may be slower than if it would be on a local database
3. ubiquitous
  1. existing everywhere
  2. computer systems - connecting devices to the internet so data is generated by processors is readily availible
4. RFID- radio frequency identification
  1. uses radiowaves to transfer data to a tag on a person/object so they can be identified and tracked
  2. tags contain info that is stored electronically and can be transmitted
LESSON 6
1. Key terms
  1. Point of Presence
    1. access point to internet. location which contains all hardware which allows users to access internet.
  2. Network Access Point
    1. interchange between networks within internet. allows ISPs to interconnect
  3. Internet Protocol
    1. protocol used to route packets of info across internet
  4. Transmission Control Protocol
    1. protocol which takes data from users application program and passes it onto IP for transfer across internet. TCP reassembles and forwards data to user's aapplication program.
  5. File Transfer Protocol
    1. protocol which allows files to be transferred between 2 computers on TCP-based network. used to download programs to computer from servers & upload web pages which you've created to server that hhosts them.
  6. Internet Service Provider
    1. companies which provide cost effective gateway for people & organisations to get onto internet e.g. virgin, BT
2. connection to internet
  1. wireless
    1. not fixed to stationary computer, can be used wherever accessible wireless hub availible
    2. need access to wireless hub, less secure with wireless connections, slower transmission speeds than wired broadband
  2. broadband
    1. better reception and faster than dial-up
    2. needs base which is wired in
  3. dial-up
    1. can use existing telephone circuits
    2. older technology gives poor reception, can be errors, slower
LESSON 1
1. communication
  1. email, messaging, newsgroups, social networking, conferencing, blogs/ vlogs
2. Real-time Info.
  1. timetables, news, sports updates, weather reports, travel news
3. commerce
  1. banking, auctions, online sales/ purchasing, poublishing
4. government
  1. tax returns, e-voting, applications for grants/ benefits
5. education
  1. online learning/ training
6. buisness
  1. business networks, collaborative working
7. entertainment
  1. multi-user games, radio & tv players
8. download services
  1. music, films, new software

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BTECH 1 - 6

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