ICT Unit 3
What is encoding? - correct answer-encoding involves shortening of data when inputting into
a computer system
e.g airline codes (BA for british airway)
Advantages of encoding data - correct answer--saves time because entering coded data is
faster
-fewer characters so less storage space
-less chance of human typographical error
Advantages and disadvantages of storing data using ICT - correct answer-ad: -cheaper
because less money on overheads for filing cabinets space
-easier and quicker to transfer or back up data elsewhere using the internet
dis: -training will be needed and this can be expensive
-ease of transferring data is a security risk so protection from hackers will be needed
Batch total - correct answer-check something is not missing by adding together a number
field in different records and checking the total
Hash total - correct answer-same as batch total but field checked are meaningless
Parity check - correct answer-checks that data is correct when it is transmitted somewhere
Control systems - correct answer--security systems
-automatic doors
-traffic control
-car parking
-greenhouses
-robotic
-simulation
traffic control - correct answer-some traffic lights use traffic detection loops. so can detect
when a car goes over that part of the road and can turn green
greenhouses - correct answer-heat sensors can tell actuators to open a window if it
becomes too hot
robotics - correct answer-PIR sensors in robots can detect movement to avoid human injury.
robots can spray cars, lift heavy objects
simulation - correct answer-flight and car simulators use actuators to move the simulated
cockpit when a joystick or wheel is moved
, Advantages and disadvantages of control systems - correct answer-ad: robots can be put in
dangerous situations and do not need to take breaks
dis: assembly line jobs can be lost and robots can be expensive to repair
What does compression/optimization mean? - correct answer-making file sizes smaller by
reducing their quality
advantages of compression - correct answer--files load quicker and the download time is
less
-you can store more files because the file size is smaller
disadvantages of compression - correct answer--images, movies and sounds are of lower
quality
-it can be very expensive to buy the best compression software
What is web browser used for? - correct answer-view webpages on the internet
URL - correct answer-uniform resource locators:
enter a unique website url into address bar of browser
Keyword searches - correct answer-normally, a built-in search enters keyword searches into
a search engine
links - correct answer-click hyperlinks to move between different web pages
menus - correct answer-websites have menus to allow you to navigate between pages
what to analyse with websites - correct answer--house style (image colour)
-audience
-size
-techniques (what design skills used to produce it)
search (look at search engine ranking when searching for a website)
Interactive features of websites - correct answer-online forms: fill in information when signing
up to social networking
quiz: take tests and quizzes online
email: either online forms or links to an email address so you can contact a company
games: there are many free online games created using adobe flash
Things to consider when creating a website - correct answer--template
-home page
-site navigation
-golden triangle
-hyperlinks
-bookmarks
-navigation bar
-banners
-web icons
What is encoding? - correct answer-encoding involves shortening of data when inputting into
a computer system
e.g airline codes (BA for british airway)
Advantages of encoding data - correct answer--saves time because entering coded data is
faster
-fewer characters so less storage space
-less chance of human typographical error
Advantages and disadvantages of storing data using ICT - correct answer-ad: -cheaper
because less money on overheads for filing cabinets space
-easier and quicker to transfer or back up data elsewhere using the internet
dis: -training will be needed and this can be expensive
-ease of transferring data is a security risk so protection from hackers will be needed
Batch total - correct answer-check something is not missing by adding together a number
field in different records and checking the total
Hash total - correct answer-same as batch total but field checked are meaningless
Parity check - correct answer-checks that data is correct when it is transmitted somewhere
Control systems - correct answer--security systems
-automatic doors
-traffic control
-car parking
-greenhouses
-robotic
-simulation
traffic control - correct answer-some traffic lights use traffic detection loops. so can detect
when a car goes over that part of the road and can turn green
greenhouses - correct answer-heat sensors can tell actuators to open a window if it
becomes too hot
robotics - correct answer-PIR sensors in robots can detect movement to avoid human injury.
robots can spray cars, lift heavy objects
simulation - correct answer-flight and car simulators use actuators to move the simulated
cockpit when a joystick or wheel is moved
, Advantages and disadvantages of control systems - correct answer-ad: robots can be put in
dangerous situations and do not need to take breaks
dis: assembly line jobs can be lost and robots can be expensive to repair
What does compression/optimization mean? - correct answer-making file sizes smaller by
reducing their quality
advantages of compression - correct answer--files load quicker and the download time is
less
-you can store more files because the file size is smaller
disadvantages of compression - correct answer--images, movies and sounds are of lower
quality
-it can be very expensive to buy the best compression software
What is web browser used for? - correct answer-view webpages on the internet
URL - correct answer-uniform resource locators:
enter a unique website url into address bar of browser
Keyword searches - correct answer-normally, a built-in search enters keyword searches into
a search engine
links - correct answer-click hyperlinks to move between different web pages
menus - correct answer-websites have menus to allow you to navigate between pages
what to analyse with websites - correct answer--house style (image colour)
-audience
-size
-techniques (what design skills used to produce it)
search (look at search engine ranking when searching for a website)
Interactive features of websites - correct answer-online forms: fill in information when signing
up to social networking
quiz: take tests and quizzes online
email: either online forms or links to an email address so you can contact a company
games: there are many free online games created using adobe flash
Things to consider when creating a website - correct answer--template
-home page
-site navigation
-golden triangle
-hyperlinks
-bookmarks
-navigation bar
-banners
-web icons
