Could someone please explain this question to me ? I am really struggling on it/don't understand it at all. You can find the mark scheme on the EDEXCEL website-> its the 2016 spec and 2018 paper 2. Id rather understand it through an explanation than look at the mark scheme.
Thank You!
Hey EM, thank you for another great question!
So the question is essentially asking what sort of validation checks the program must undertake to ensure the entered address code is legitimate. Edexcel is asking you to state an example of a validation check and then show an address code which doesn't follow this validation check. So they give you the example of a "Pattern Check" and their test data is "4W56AB92" which doesn't follow the required pattern.
Then in the mark scheme you can see there are 4 different examples of validation checks they are accepting. For each type of validation check you state they would like an example of test data which fails that check. For example if I was to do one for you:
Validation Check: Type Check ("ab1234cd")
Test Data: "1abc2*/3"
For the Type Check you are only allowed letters and numbers so if there are symbols as well as letters and numbers this would not follow the validation check.
I hope this helps :)
If you have any other questions please feel free to ask, thank you!