1.
When you enter data with lots of mistakes or errors, it is called...
Correct Answer
D. GIGO
Explanation
When you enter data with lots of mistakes or errors, it is called GIGO. GIGO stands for "Garbage In, Garbage Out," which means that if you input incorrect or faulty data into a system, the output or results will also be incorrect or faulty. This emphasizes the importance of ensuring the accuracy and quality of data input in order to obtain reliable and meaningful results.
2.
Validation aims to make sure that data is sensible, reasonable, and....
Correct Answer
A. Allowable
Explanation
Validation aims to make sure that data is sensible, reasonable, and allowable. This means that the data meets certain criteria or rules and is within acceptable limits or boundaries. Validation ensures that the data is valid and can be used effectively and reliably for its intended purpose. It checks if the data is permissible or allowed according to predefined rules or standards, ensuring that it is suitable for use in the system or process.
3.
Validation is the same as verification. They work the same way. True or false?
Correct Answer
B. False
Explanation
Validation and verification are not the same and do not work in the same way. Verification refers to the process of evaluating a system or component to determine whether it meets the specified requirements. On the other hand, validation is the process of evaluating a system or component during or at the end of the development process to determine whether it satisfies the customer's needs and expectations. Therefore, the correct answer is false.
4.
Which type of validation would check that you had only put a number into a field with a 'numeric' datatype?
Correct Answer
B. Type check
Explanation
A type check validation would ensure that the input in a field with a 'numeric' datatype is indeed a number. It would verify that no other type of data, such as letters or symbols, are entered into the field. This validation helps to ensure that the data entered into the field is of the correct type and meets the required format.
5.
Verification means checking the data you have entered against the original source document. True or false?
Correct Answer
A. True
Explanation
Verification is the process of comparing the data entered with the original source document to ensure accuracy and correctness. This involves cross-checking and confirming that the information is consistent and matches the original source. Therefore, the statement "Verification means checking the data you have entered against the original source document" is true.
6.
Which validation check would you use for a field such as a postcode which is always laid out in the same order?
Correct Answer
A. Picture check
Explanation
A picture check would be the appropriate validation check for a field like a postcode, which is always laid out in the same order. A picture check ensures that the input matches a specific pattern or format. In this case, the postcode would need to match the expected format, such as a specific number of digits or a combination of letters and numbers. This helps to ensure that the data entered is in the correct format and reduces the chances of errors or inconsistencies.
7.
Which type of validation would you use to ensure that data is entered into a field and that it can't be left blank?
Correct Answer
C. Presence check
Explanation
A presence check is used to ensure that data is entered into a field and that it cannot be left blank. This validation method ensures that the required information is provided and prevents the submission of incomplete or missing data.
8.
If your company sold goods priced between £10 and £100, which would be the best validation method to use?
Correct Answer
B. Range check
Explanation
The best validation method to use when selling goods priced between £10 and £100 would be a range check. This method ensures that the input falls within the specified range, in this case, between £10 and £100. It helps to validate that the price entered is within the expected range and avoids any errors or inconsistencies in pricing.
9.
Which type of validation would be the best if you wanted to check that a series of numbers you had entered was correct?
Correct Answer
C. Check digit
Explanation
A check digit is a form of validation that is used to verify the accuracy of a series of numbers. It involves adding an extra digit to the end of the number sequence, which is calculated based on the other digits in the sequence. By recalculating the check digit and comparing it to the original, you can determine if the series of numbers was entered correctly. This method is commonly used in barcodes, credit card numbers, and identification numbers to ensure accuracy and detect errors in data entry.
10.
When you choose a new password and have to enter it twice, is this validation or verification?
Correct Answer
B. Verification
Explanation
When you choose a new password and have to enter it twice, it is an example of verification. Verification is the process of checking if the entered data matches the original data. In this case, the user is verifying that they have entered the correct password by entering it twice. Validation, on the other hand, checks if the entered data meets certain criteria or rules. In this scenario, the system may validate the password to ensure it meets the required complexity or length.