LO1

• holders of information:

  1. categories of holders
  2. location
  3. comparison of technologies available and access issues across the global divide
• what is the digital divide?

  the difference in access to digital resources in different areas of the world.
• what is the global divide?

  the divide with respect to the access of information between different countries and different types of holders of information worldwide.  
• what are the 3 main categories of holders?

  government, individuals and business.
• what are the types of information storage media?

  paper, optical media, magnetic media, solid state media.
• what are the types of information formats?

  web pages( dynamic and static), blogs, podcasts, streamed audio and video, social media channels, document stores and RSS feeds.
• what is the purpose of RSS feeds?

  to deliver regularly changing web content and allows users to subscribe to updates.
• what are the advantages of RSS feeds?

  keeps users up to date with info they are interested in

  alternative communication channel

  increases the number of links back to a business' website

  automatically updates when new info is posted

  expands their reach and strengthen the company brand
• what are the disadvantages of RSS feeds?

  most browsers no longer have built-in RSS functionality.

  rarely used.

  tracking subscribers to RSS feeds is difficult.

  the content of feed can be copied easily, even without the permission of the business.
• hand-held devices: smartphones, tablets, e-readers, etc.
• portable devices: mobile phones, tablets, laptops, smart watches.
• fixed devices: larger tablets and laptops.
• shared devices: devices that are accessible to multiple users, such as printers and data centres.
• what are the different types of internet connections?

  copper cable, optical-fibre, satellite, mobile data networks and microwave.
• the internet is a network of interconnected networks spanning the world.
• what are some examples of information holders ?

  business, government, individual, education, healthcare, charity and community
• internet 

  worldwide network of interconnected networks 

  Public and Open access 
• intranet 

  a network that is not connected to the internet and is only available to those within an organization. 

  Private and Closed access 
• extranet 

  a website that provides restricted access to resources for an unauthorised set of users from outside the organization. 

  Private and Shared access 
• What is the world wide web? 

   WWW is all of  the public websites or pages that users can access on their local computers and other devices through the internet. 
• what are the characteristics you must consider when using the internet?

  speed, security, access levels and accessibility
• developing and developed countries developing countries tend to have less-developed industrial base than developed countries. They tend to have less access to computers and the internet- this makes information dispersal and gathering harder than for developed countries. 

  Urban and rural an urban location is in a city or other built-up areas. Rural locations are in the countryside. Rural areas tend to have poorer internet access. 
• what are the disadvantages of optical media for storage?

  • They have very slow access speeds  
  • Low capacity 
  • Not durable because discs are fragile and break or scratch easily 
• what are the advantages of optical media for storage?

  • Discs are thin and very portable  
  • Less likely to lose data 
  • Have a longer shelf-life  
  • Cheaper to produce 
• what are the advantages of using paper for storage?

  • Relatively inexpensive  
  • Very little energy is consumed when reading from paper 
  • Easy to use by people with limited computer experience 
• what are the disadvantages of using paper for storage?

  • Easily damaged when handled 
  • Costs a lot to transport 
  • Hard to keep secure 
  • Collaboration is not easy 
• what are the advantages of using magnetic media for storage?

  larger capacity and cheaper per gigabyte than solid state

  relatively quick access speed but slower than solid
• what are the disadvantages of using magnetic media for storage?

  not durable and not very portable when powered on because it can be damaged.
• what are the advantages of using solid state media for storage purposes?

  high capacity.

  usually durable but cheap USB sticks can break/snap.

  the small size makes it portable.

  has the fastest access speeds because they contain no moving parts.
• what are the disadvantages of using solid state media for storage purposes?

  more expensive than magnetic

  can be damaged if dropped

  easy to misplace or have stolen due to small size
• give 2 examples of solid state media

  USB flash drive and memory cards
• why are optical media devices called optical media?

  they are written and read by laser
• give 2 examples of magnetic media devices

  magnetic tape and hard disk drive
• give 3 examples of optical media devices

  blue-ray disc, CD-ROM and CD-R
• what is the purpose of solid state media?

  stores data and information in circuitry rather than magnetized disc or tape. it has no moving parts.