GCSE ICT- Storage and Test Data
Physical Storage
Logical Storage: The Cloud
USB Sticks
Portable Hard Drive
Hard Drive
CD/DVD and Blu Ray
It is External
It is Internal
It is External
Disadvantages: Just a scratch could break it and limited storage
Advantages: It is already built in
Disadvantages: You can't take it with you places.
Advantages: You can take it anywhere you go.
Disadvantages: Quite small so you can easily lose them
Disadvantages: You can damage it easily.
Advantages: You can take it anywhere and it stores a lot of data.
Advantages: Store music and films efficiently.
Disadvantages: Only can be accessed with the internet.
The cloud is a way to store and interact with data through the internet.
Advantages: Access it anywhere on any device!
Test Data
Extreme data is data that is on the border of what is valid and invalid
Valid data is data that is correct and fits inside a certain bracket eg. 1 and 20. Valid could be 3 and 18
Invalid data is data that is not correct and does not fit in the bracket of numbers eg. 1 and 20. 21 and -3 are invalid