ICT infrastructure Flashcards
what ae the elements of ice infrastcure?
access devices communication channels front end ice back ed cit data management
what are access devices>
communication achieved through tele communications
access devices used to make such communications
what’d ohs an accessdveice do?
sends messages between internal/external actors to the front end act systems
what are examples of access devices\/
mobiles ohos
telephoen
what are communication channels?
access devices work with these in order to achieve communication
though communication lines
e.g the internet or the web
what are the type of interconnected communication channels
internet service prov
internet service prov
network access pon
what is included in the internet protocol?.
EACH DEVICE IS GIVENE A UNIQUE IP ADDRESS
packages of messages are directed to devices through routers
why is there a global digital divide
only one quarter og the work use internet
what are the layers of an ICT system?
user interface
business rules
transactions
data mangement
what is the user interface layer?
manges dialogue between human and machine actors
way of getting data
what is the briskness rues tier?
used to enforce constraints on data entering act system
what s the transaction tier?
unit of work which creates reads updates and deletes data structures
what is the data management tier?
maintains data structures needs
what does tiered architecture allows?
it to be used by different actors
extranet
intranet
internet
what is the intranet
internal actors
