ict info 2
characteristics of users
physical characteristics experience enivornment of use task to be undertaken age
what is data?
represents the raw facts and figures or a set of values. MEANINGLESS
reasons for security breaches
satisfaction personal gain financial gain sabotage
types of ict jobs
IT project manager computer game developer IT security coordinator IT support technician IT trainer web designer system analyst software developer server analyst helpdesk technician web manager
www
a collection of multimedia resources accessible via the internet
the Internet
a large group of interconnected computers around the world that allow the sending and retrieval of information from one computer to another
what is a bit?
a single unit of binary
what is a system?
any activity that involves the capture of data as input, the processing of data into information and the production of information as output.
what can ict provide
fast repetitive processing vast storage capacity search and combine improved presentation of information improved accessibility to information and services improved security of data and processes
essential skills for ict pro
good oral and written communication skills problem-solving skills patience flexibility teamwork
interfaces?
graphical user interface (GUI) for WIMPs menu-driven interface command line interface
threats to ict systems
human error employees external viruses spyware
what is ict?
information communication technology is the use of technology for the input, processing and storage of data and output of information
intranet
internal network used by many orgs to communicste via email and other methods like newsgroups
de jure standard
legally binding industry standards that all manufacturers have to agree to work to
file access levels
no access read only read/write read/write/delete full access
de facto standard
no formal agreement is in place, but a particular standard has become the one that is most commonly used in practice
what are the components of an ict system?
people procedures data information software hardware
types of software licence
single user multi user site educational free
factors influencing the use of ict
social legal economic environmental ethical cultural
extranet
the part of an organisation'd network that can be made available to outside users
what is processing?
the work the computer does on the data to convert it into information
what factors affect the quality of information?
timely reliable accurate compete relevant
encoding
used by computers to convert data into machine readable form
what to consider when choosing back up strategy
what data? how often? when? who responsible? where data stored?
what is coding? (remember: coding is shorter than encoding)
where some data is coded on collection before being entered and this changes the original data into a shortened version by assigning a code, necessary in order to process the data effectively
what is an ict system?
where the output from the system goes directly to a human being or into another ict system
