IGCSE CIE COMPUTER SCIENCE UNIT
#7 EXAM QUESTIONS WITH CORRECT
ANSWERS
Linear Search - Answer-a search algorithm which checks each element of a list, in
order, until the desired value is found or all elements in the list have been checked.
Bubble Sort - Answer-A sort in which the first two items to be sorted are examined and
exchanged if necessary to place them in the specified order; the second item is then
compared with the third (exchanging them if required), the third is compared with the
fourth, and the process is repeated until all pairs have been examined and all items are
in the proper sequence.
Validation - Answer-automated checks carried out by a program that data is reasonable
before it is accepted into a computer system
Verification - Answer-checking that data has been accurately copied from another
source and input into a computer or transferred from one part of a computer system to
another
Set of test data - Answer-all the items of data required to work through a solution
Normal data - Answer-data that is accepted by a program
Abnormal data - Answer-data that is rejected by a program
Extreme data - Answer-the largest/smallest data value that is accepted by a program
Boundary data - Answer-the largest/smallest data value that is accepted by a program
and the corresponding smallest/largest rejected data value
Range check - Answer-a check that the value of a number is between an upper value
and a lower value
Length check - Answer-a method used to check that the data entered is a specific
number of characters long or that the number of characters is between an upper value
and a lower value
Type check - Answer-A validation technique which checks to see if data is of a certain
type such as text or date
Presence check - Answer-Check to make sure that data has been entered into a field.
#7 EXAM QUESTIONS WITH CORRECT
ANSWERS
Linear Search - Answer-a search algorithm which checks each element of a list, in
order, until the desired value is found or all elements in the list have been checked.
Bubble Sort - Answer-A sort in which the first two items to be sorted are examined and
exchanged if necessary to place them in the specified order; the second item is then
compared with the third (exchanging them if required), the third is compared with the
fourth, and the process is repeated until all pairs have been examined and all items are
in the proper sequence.
Validation - Answer-automated checks carried out by a program that data is reasonable
before it is accepted into a computer system
Verification - Answer-checking that data has been accurately copied from another
source and input into a computer or transferred from one part of a computer system to
another
Set of test data - Answer-all the items of data required to work through a solution
Normal data - Answer-data that is accepted by a program
Abnormal data - Answer-data that is rejected by a program
Extreme data - Answer-the largest/smallest data value that is accepted by a program
Boundary data - Answer-the largest/smallest data value that is accepted by a program
and the corresponding smallest/largest rejected data value
Range check - Answer-a check that the value of a number is between an upper value
and a lower value
Length check - Answer-a method used to check that the data entered is a specific
number of characters long or that the number of characters is between an upper value
and a lower value
Type check - Answer-A validation technique which checks to see if data is of a certain
type such as text or date
Presence check - Answer-Check to make sure that data has been entered into a field.
