IGCSE Computer Science Paper 2 Exam
Questions with Answers
algorithm - Correct Answer ✅a step-by-step procedure for
solving a problem
Computer system - Correct Answer ✅A five-part system
consisting of hardware, software, data, and people and
communications
normal data - Correct Answer ✅Entering data that should
be acceptable to the solution.
abnormal test data - Correct Answer ✅Test data that is
clearly incorrect and should produce an error.
extreme data - Correct Answer ✅Test data on the boundary
of what the program will accept
boundary data - Correct Answer ✅Data either side of the
range extremes. For example in a range of 1 to 10 boundary
data will include 0, 1, 10 and 11
, IGCSE Computer Science Paper 2 Exam
Questions with Answers
Validation - Correct Answer ✅Is the automated checking by
a program that data is reasonable before it is accepted into a
computer system.
Range check - Correct Answer ✅checks that only numbers
within a specified range (upper and lower limit) are accepted.
E.G. percentage marks between 0-100 ONLY
Length Check (2) - Correct Answer ✅1. checks that data
contains an exact number of characters. E.G. that a password
must by exactly 8 char in length.
2. That the data entered is a reasonable number of character
e.g. family name should be between 2-30 char
Type check - Correct Answer ✅checks that the data
entered is of a given data type. E.G. number of brothers or
sisters would be an integer (whole number)
Character check - Correct Answer ✅checks that when a
string of characters is entered it doesn't contain any invalid
Questions with Answers
algorithm - Correct Answer ✅a step-by-step procedure for
solving a problem
Computer system - Correct Answer ✅A five-part system
consisting of hardware, software, data, and people and
communications
normal data - Correct Answer ✅Entering data that should
be acceptable to the solution.
abnormal test data - Correct Answer ✅Test data that is
clearly incorrect and should produce an error.
extreme data - Correct Answer ✅Test data on the boundary
of what the program will accept
boundary data - Correct Answer ✅Data either side of the
range extremes. For example in a range of 1 to 10 boundary
data will include 0, 1, 10 and 11
, IGCSE Computer Science Paper 2 Exam
Questions with Answers
Validation - Correct Answer ✅Is the automated checking by
a program that data is reasonable before it is accepted into a
computer system.
Range check - Correct Answer ✅checks that only numbers
within a specified range (upper and lower limit) are accepted.
E.G. percentage marks between 0-100 ONLY
Length Check (2) - Correct Answer ✅1. checks that data
contains an exact number of characters. E.G. that a password
must by exactly 8 char in length.
2. That the data entered is a reasonable number of character
e.g. family name should be between 2-30 char
Type check - Correct Answer ✅checks that the data
entered is of a given data type. E.G. number of brothers or
sisters would be an integer (whole number)
Character check - Correct Answer ✅checks that when a
string of characters is entered it doesn't contain any invalid
