cameroon gce advanced level 2020 computer science paper 2

cameroon gce advanced level 2020 computer science paper 2

cameroon gce advanced level 2020 computer science paper 2

(0
(4 marks)
(ii) Computer images are described as Bitmapped or Vector graphics.
(a) Describe how images arc represented and manipulated as Bitmapped and Vector graphics
images.
( b) State one advantage and one disadvantage of using Vector graphics over a bitmapped graphics.
(3 marks)
(2 mark)
(1 mark)
(4 marks)
(1 mark)
(iii) (a) State what you understand by the term data compression.
(b) State two types of compression techniques. Explain how each works.
(c) Distinguish between data compression and data encryption.
(i) (a) Describe the stored program concept in von Neumann Machine architecture
(b) Illustrate with registers how an instruction is fetched and loaded for execution
2. (2 marks)
(4 marks)
( ii) Describe the role of each of the following:
(a) The Control Unit.
(b) The Arithmetic and Logical Unit.
(c) The I /0 controller.