IGCSE COMPUTER SCIENCE EXAM
QUESTIONS AND ANSWERS
Abstraction - answer-picking out important bits of information
Accumulator - answer-part of alu that stores immediate results when doing a calculation
Algorithmic thinking - answer-coming up with an algorithm to solve a problem
Algorithm - answer-a step-by-step procedure for solving a problem
Argument - answer-value that a parameter of a sub program actually takes
Alu - answer-the part of the cpu that carries out arithmetic and boolean operations
Assembly language - answer-a low level language
Bandwidth - answer-the amount of data that can be transmitted over a network in a
given amount of time.
Binary shift - answer-moving the bits in a binary number left or right and filling the gap
with zeros
Bitmap image - answer-a graphic that is made up of pixels
Bit rate - answer-the number of bits used per second of sampled audio
1 byte - answer-8 bits
Cache - answer-quick access memory inside the cpu
Casting - answer-a way of changing from one data type to another
Character - answer-a single alphanumeric symbol
Colour depth - answer-the number of bits used for each pixel in an image file
Decomposition - answer-breaking down a problem into smaller problems
Defragmentation - answer-reorganising data on a hard drive to put broken up files back
together and collect up the free space
Erroneous data - answer-test data that a program isn't designed to accept
QUESTIONS AND ANSWERS
Abstraction - answer-picking out important bits of information
Accumulator - answer-part of alu that stores immediate results when doing a calculation
Algorithmic thinking - answer-coming up with an algorithm to solve a problem
Algorithm - answer-a step-by-step procedure for solving a problem
Argument - answer-value that a parameter of a sub program actually takes
Alu - answer-the part of the cpu that carries out arithmetic and boolean operations
Assembly language - answer-a low level language
Bandwidth - answer-the amount of data that can be transmitted over a network in a
given amount of time.
Binary shift - answer-moving the bits in a binary number left or right and filling the gap
with zeros
Bitmap image - answer-a graphic that is made up of pixels
Bit rate - answer-the number of bits used per second of sampled audio
1 byte - answer-8 bits
Cache - answer-quick access memory inside the cpu
Casting - answer-a way of changing from one data type to another
Character - answer-a single alphanumeric symbol
Colour depth - answer-the number of bits used for each pixel in an image file
Decomposition - answer-breaking down a problem into smaller problems
Defragmentation - answer-reorganising data on a hard drive to put broken up files back
together and collect up the free space
Erroneous data - answer-test data that a program isn't designed to accept
