Computer Science · Oct / Nov 2016 · Paper 13 · Question 4

Any two from:

– Easy to make a mistake – Can be slow if not trained – Dirt/food can get into keys [2]

Any two with identification and explanation from:

– Fewer typing errors may be made … – … because one button is pressed to order an item – Speed up the time to enter an order … – … because fewer buttons are pressed to complete the order – May require less training … – … because it is easier to identify an order item from its image rather than typing it – Can stop dirt/food damage … – … normally has a protective layer // because there are no keys for dirt/food to get into [4]

1 mark for security measure, 1 mark for description. Any two from:

– Encryption – If the data is accessed or stolen it will be meaningless – Biometric device – Can help prevents unauthorised access to the system (only award once) – Firewall – Can alert to show unauthorised access attempt on the system – Can help prevent unauthorised access to the system (only award once) – Can help protect against viruses and malware entering the system – Anti-spyware – Can stop the keys being logged that, when analysed, would reveal the password to the data [4]