5. Iqbal wants to test the new computerised payroll system he would like to introduce to his company. No company worker is paid less than $100 and no worker is paid more than $500. Explain what is by the following three types of test data using examples of the wages paid to workers. Normal Abnormal Extreme Normal data data within a (given) range/appropriate for that data type – Example any wage between $100 and $500 – Abnormal data data outside the range/of the wrong data type – Example any wage less than $100 or greater than $500 or text example – Extreme data data on the boundaries of the range – Example $100 or $500 – 6. The head teacher of a school is concerned that students may be hacking into the exam scores database to change their marks. Other than passwords, describe ICT methods that could be used to prevent this from happening. Biometric methods unique so only authorized users will have access – Encryption makes it difficult for unauthorised users to read data Firewall makes it difficult for unauthorised computers to access the system – Disconnect records computer from network limit access physically – Access levels only users with appropriate permissions can access data –
5. Iqbal wants to test the new computerised payroll system he would like to introduce to his company. No company worker is paid less than $100 and no worker is paid more than $500. Explain what is by the following three types of test data using examples of the wages paid to workers. Normal Abnormal Extreme Normal data – data within a (given) range/appropriate for that data type Example – any wage between $100 and $500 Abnormal data – data outside the range/of the wrong data type Example – any wage less than $100 or greater than $500 or text example Extreme data – data on the boundaries of the range Example – $100 or $500 6. The head teacher of a school is concerned that students may be hacking into the exam scores database to change their marks. Other than passwords, describe ICT methods that could be used to prevent this from happening. Biometric methods – unique so only authorized users will have access Encryption makes it difficult for unauthorised users to read data Firewall – makes it difficult for unauthorised computers to access the system Disconnect records computer from network – limit access physically Access levels – only users with appropriate permissions can access data
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