Validation: Ensuring that a password is exactly eight characters long., Checking that a mark entered is between 0 and 100., Ensuring that a phone number contains only digits., Checking that a required field, such as "First Name," is not left blank., Ensuring that an ID number follows the pattern "ABC1234.", Checking that the entered date follows the format "DD/MM/YYYY.", Ensuring a product code ends with a specific check digit., Ensuring the entered age is a whole number., Checking that the entered email address is not left empty., Verification: Asking the user to confirm their email address by re-entering it., Displaying a summary of entered data for the user to review and confirm., Comparing two entries of a username made by different operators to confirm they match., Asking the user to visually confirm that the billing address entered matches the address on their invoice., Comparing two copies of a file to ensure they are identical after being transferred., Prompting the user to confirm that the information displayed on a registration form is correct before submitting.,

Validation & verification

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