INSTRUCTIONS – READ CAREFULLY 1. This paper consists of 6 pages. Please check that your question paper is complete.   2. Answer all questions on your exam pad. After completing the paper, scan in your answers, in the correct order, to a pdf file, and then upload. Remember to save your files with the name of the document and your name before uploading. 3. Read the questions carefully and make sure that you answer all parts of each question.   4. Show all working where applicable.   5. Non-programmable calculators may be used.   6. Number your answers exactly as the questions are numbered. 7. It is in your own interest to write legibly and to present your work neatly.

A   B C Working space X 0 0 0     0 0 1     0 1 0     0 1 1     1 0 0     1 0 1     1 1 0     1 1 1    

Scan your pages in pdf format and upload the pdf document to your quiz.

Question 2 – Computer architecture Answer all of the following questions 2.1 Name TWO components in the CPU. (2) 2.2    Name the three busses that connect the CPU to memory. (3) 2.3 Adding more memory is probably the cheapest way of upgrading the performance of a computer.   2.3.1 What type of memory is referred to? (1) 2.3.2 Why does a computer needs so many types of memory. Discuss the importance of ROM and RAM by referring to.   (a) The main property of each type of memory. (2) (b) Why each type of memory is needed in a computer. (2) 2.4 Most modern desktop or laptop computers come with 4 GB of RAM.     Briefly explain why computers have much greater storage (secondary memory) than memory (primary memory). (2) 2.5 One of the most important advances in computer design has been the increase in the size of cache memory.   2.5.1 Where is cache memory found? (1) 2.5.2 Briefly explain the function of cache memory. (2) 2.6 Another development in storage design has also led to a significant improvement in computer performance. This is the Solid State Drive (SSD).   2.5.1 Why is the drive referred to as solid state? (1) 2.5.2 What technology does this drive use for storing data? (1)     [17]

3.2 What types of livestock did the African farmers herd? (3)

QUESTION 5: Contextual questions 5.1 A friend of yours is interested to know how iron tools were made by the first African farmers. Explain the process to him/her and also include who was responsible for working with iron and what this specific person was called. You must have 6 sentences in total. (6)

QUESTION 6:   A book of mass 2 kg falls from a window ledge and drops 1.8 m to the ground. It falls freely under gravity.    6.1 Find the speed of the book immediately before it hits the ground. (2) 6.2 Find the downward Momentum of the book immediately before it hits the ground. (2)

3.2 What types of livestock did the African farmers herd? (3)

QUESTION 1   A car moves in a straight line so that its velocity, at time t is given by

QUESTION 5: Contextual questions 5.1 A friend of yours is interested to know how iron tools were made by the first African farmers. Explain the process to him/her and also include who was responsible for working with iron and what this specific person was called. You must have 6 sentences in total. (6)