IGCSE 0478/02 Computer Science 2023 Specimen Paper 2

A loop that will always iterate at least once

• REPEAT…UNTIL

• FOR…TO…NEXT

• IF…THEN…ELSE…ENDIF

• WHILE…DO…ENDWHILE

A conditional statement to deal with many possible outcomes

• IF…THEN…ELSE…ENDIF

• CASE…OF…OTHERWISE…ENDCASE

• REPEAT…UNTIL

• FOR…TO…NEXT

A conditional statement with

different outcomes for true and false

• REPEAT…UNTIL

• FOR…TO…NEXT

• IF…THEN…ELSE…ENDIF

• CASE…OF…OTHERWISE…ENDCASE

A loop that will always iterate a set

number of times

• WHILE…DO…ENDWHILE

• CASE…OF…OTHERWISE…ENDCASE

• IF…THEN…ELSE…ENDIF

• FOR…TO…NEXT

What is the output of this code:

Count ← 0

WHILE Count < 50 DO

OUTPUT Name[Count]

Count ← Count + 1

ENDWHILE

• Syntax Error

• It will count and output 50 numbers

• It will output 50 names that have been stored in the array of Name[]

• It will count the number of Name

Which statement describes about the Validation Check?

• A repeated check which which ensures that whether that the data is right or wrong by summing up data with other values

• A range check tests that data entered fits within specified values.

• To test if the data entered is possible / reasonable / sensible

• To test if the data input is the same as the data that was intended to be input.

Which statements describes about Verification check?

• A range check tests that data entered fits within specified values

• To test if the data entered is possible

• A double entry check expects each item of data to be entered twice and compares both entries to check they are the

  same.

• To test if the data input is the same as the data that was intended to be input.

Examples of validation checks are:

• Visual Check

• 2 Factor Entry Check

• Parameter Check

• Range Check

Examples of verification checks are:

• Presence Check

• Visual Check

• Length Check

• Double Entry Check

A program that performs a specific task is called?

• Process

• Parameter

• Function

• File