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4.1 One of your clients wants to set up a small network in their office. Their company is a small accounting firm which consists of three staff members who do data capture for their clients and two accountants who use the data and prepare balance sheets etc. from the data. The network has to be designed in such a way that only the two accountants have access to the calculations and preparations for the balance sheets while the other three can only enter data from prepared sheets. They need you to advise and set up the network.   4.1.1 You tell them that although they are running a small network, five users in three offices next to each other, they will need a client/server network.   a. Explain the briefly, each of the three types of computers in network architecture, namely, server, client or peer. (3) b. In what way will a client/server network be more expensive than a peer to peer. (2) c. Justify why you want the more expensive client/server option. (2) 4.1.2 Taking into account this setup (4.1.1), what type of network would you advise, wireless or wired? Motivate your answer. (3) 4.2 They will also need a connection to the internet and they will need email facilities.   4.2.1 You advise them on an internet package but you need to explain certain concepts.   a. What is meant by bandwidth? (2) b. Explain the concept of CAP. (2) 4.3 One of the most commonly used services on the internet is VOD (Video on demand) and video conferencing. Explain briefly the following concepts.   4.3.1 Streaming. (2) 4.3.2 Downloading. (2) 4.3.3 File compression. (2) 4.4.4 Voice over Internet Protocol (2)     [22]

Question 3 – Networks and Communication 3.1 Plug and Play is a technology that allows users to add or remove peripheral devices from their computers without the need of technical skills. Answer whether the following statements are TRUE or FALSE.   3.1.1 When you connect a Plug and Play device to a computer, an IRQ will automatically be allocated. (1) 3.1.2 For Plug and Play to be possible the BIOS does not need to support Plug and Play, as long as the Operating System supports Plug and Play. (1) 3.1.3 If a device is Plug and Play it does not need a device driver. (1) 3.2 Operating systems can radically differ in philosophy, design and the technologies that they operate on, yet they all perform some of the same basic functions.   3.3.1 Name three functions that all operating systems perform. (3) 3.3.2 Name two different types of computing devices and explain the main difference in their operating systems. (4)     [10]

Question 5 – Programming and Algorithms 5.1 Your part time job is going well and you now have a few businesses as clients that provide you with a guaranteed monthly income of R3 000. However, you have transport problems to get to your clients. You decide to buy a motorbike. The cost of the motorbike is R10 000.           Write an algorithm to determine the number of months it will take you to pay off the motorbike if you pay R2 000 per month at an interest rate of 12% per year, calculated at the beginning of every month on the outstanding amount.           Use the following variables:     amount Amount  outstanding     payment Monthly payment     rate Interest rate     numMonths Number of months     interest Monthly interest to be paid. [9]

  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)