7.7 Test Data Cambridge IGCSE 0478

What is the purpose of using test data in program testing?

• To ensure that the program behaves as expected in different scenarios.

• To check if the program runs without any syntax errors.

• To improve the speed of the program.

• To make the program more user-friendly.

Which type of test data consists of values that are within the expected range?

• Normal Data

• Abnormal Data

• Extreme Data

• Boundary Data

What is an example of normal data when testing a system that accepts exam scores between 0 and 100?

• 75

• -5

• 101

• "eighty"

What type of test data includes values that are outside the expected range?

• Abnormal Data

• Extreme Data

• Boundary Data

• Normal Data

Which of the following is an example of abnormal data for a system that only accepts whole numbers between 1 and 50?

• "abc"

• 25

• 50

What is an example of extreme data for a program that accepts ages between 18 and 60?

• 18 and 60

• 17 and 61

• 30 and 50

• "twenty" and "sixty"

What is the key difference between boundary data and extreme data?

• Boundary data includes values just inside and just outside the valid range, while extreme data includes only the largest and smallest valid values.

• There is no difference between boundary data and extreme data.

• Extreme data is always invalid, while boundary data is always valid.

• Boundary data is used only for syntax testing, while extreme data is used for logical testing.

Which of the following is an example of boundary data for a system that accepts numbers between 10 and 100?

• 9, 10, 100, 101

• 10, 50, 100

• -1, 0, 101

• "fifty", 20, 99

A system that accepts temperatures between -20°C and 50°C is tested. Which test data set correctly applies extreme and boundary values?

• -20, -19, 50, 51

• -21, -20, 49, 50

• -20, 0, 50

• -25, -10, 55

A login system checks if a username is between 5 and 12 characters. Which test set properly includes normal, abnormal, extreme, and boundary values?

• "username1" (9 chars), "admin" (5 chars), "guest" (6 chars)

• "test" (4 chars), "myusername" (10 chars), "a1b2c3" (6 chars)

• "hello!" (6 chars), "short" (5 chars), "user987654321" (12 chars)

• "hello" (5 chars), "user123" (7 chars), "a" (1 char), "abcdefghijklm" (13 chars)