Validation and verfirication

Question 1

Validation checks

Answer 1

used to make sure only sensible data is entered into a computer

Question 2

Transcription errors

Answer 2

sometimes occur when copying data to a computer

Question 3

Transposition errors

Answer 3

sometimes happen when characters are accidentally swapped around

Question 4

Verification checks

Answer 4

stopping errors when data is copied from one medium to another
used as techniques to overcome these possible sources of errors