IB Computer Science Paper 1 2006

Define semantics and syntax and give an example of how they each relate to programming code. [4 marks]

Describe the role of buses in the machine instruction cycle. [4 marks]

Define data integrity and identify one factor that affects integrity when data is transmitted from one computer to another. [2 marks]

Describe an example of multi tasking on a personal computer. [2 marks]

Outline two advantages to a programmer of modularity at the design stage of a program, which is being coded for the first time. [4 marks]

Explain why data must be ordered if a binary search is used. [2 marks]

Outline the way in which a macro could be used when producing a document with a word processor. [2 marks]

Define the terms function argument and function parameter. [2 marks]

Define virtual memory and give an example of when it might be used. [2 marks]

Explain one reason why flash memory is increasingly being used as a portable storage medium. [3 marks]

(a) Trace the following algorithmic extract for an input of 34. {input (i); k = i mod 6; m = i div 6; output (m*6+k); } [2 marks]

(b) Determine the output if any integer, n, is input. [1 mark]