The use of hierarchy memory technologies is a cost effective technique for designing large computer systems. It includes six general classes of storage media; (i) What are the six general classes of storage media made up a memory hierarchy? (ii) Arrange the classes of storage media provided in 1 (a) (i) in a Typical Storage Hierarchy Ladder Diagram. (b) Describe the two types of the memory located at the top of the hierarchy.

1. Arrange the classes of storage media provided in 1 (a) (i) in a Typical Storage Hierarchy Ladder Diagram. (0 alama)
2. Describe the two types of the memory located at the top of the hierarchy. (0 alama)

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ABC Company Ltd wants to install an electric fence system to its customers. One of its logical circuits is derived from the Boolean expression X= AB + ABC + A ̅̅̅ ̅ + A ̅ . (a) Use Boolean laws of algebra to simplify the given Boolean expression. (b) Draw the logic gate circuit for the simplified Boolean expression in 2 (a). (c) Use a truth table to determine what input conditions produce logic 1 output in the logic gate drawn in 2 (b).

1. Use Boolean laws of algebra to simplify the given Boolean expression. (0 alama)
2. Draw the logic gate circuit for the simplified Boolean expression in 2 (a). (0 alama)
3. Use a truth table to determine what input conditions produce logic 1 output in the logic gate drawn in 2 (b). (0 alama)

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(a) Programs allocate memory to variables statically or dynamically depending on the programmers’ requirement; (i) What does the variable mean? (ii) What is the difference between dynamic and static memory allocation? Give one circumstance in which you would prefer one instead of the other. (b) You are given the following set of integers 53, 45, 30, 67, 20, 55, 60. Design a program that would read and display them in an ascending order.

1. What is the difference between dynamic and static memory allocation? Give one circumstance in which you would prefer one instead of the other. (0 alama)
2. You are given the following set of integers 53, 45, 30, 67, 20, 55, 60. Design a program that would read and display them in an ascending order. (0 alama)

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(a) The rapid growth in the use of Information and Communication Technology in the society has attracted tremendous attack of the government and organizations unauthorized data via internet. Explain two principles that can be applied to avoid cyber-attack. (b) Emma Sugar Company (ESC) utilizes computerized system to operate its day to day activities. Recently, the company’s manager claims to have lost employee details and therefore found it difficult to pay them timely; (i) What are the two possible causes of the data loss? (ii) Suggest two control measures you would take to avoid future loss of the data.

1. Explain two principles that can be applied to avoid cyber-attack. (4 alama)
2. Explain two principles that can be applied to avoid cyber-attack. (0 alama)
3. Suggest two control measures you would take to avoid future loss of the data. (2 alama)
4. What are the two possible causes of the data loss? (0 alama)
5. Suggest two control measures you would take to avoid future loss of the data. (0 alama)

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Makole district hospital employees are facing a challenge of slowness in updating and retrieving of the information from their computers connected in a network. After detailed investigation, you realized that the network topology used produces much traffic as users connecting to the network increases. Suppose you are requested to redesign the network so as to improve the performance of the system; (a) What type of network topology was used in the hospital computer network? (b) Outline four factors you will consider before proposing a new network topology to the hospital management. (c) Which type of network topology will you suggest to design in order to replace the current network? Give a reason. (d) What are the four communication devices will be required to setup a new network topology?

1. What type of network topology was used in the hospital computer network? (0 alama)
2. What type of network topology was used in the hospital computer network? (2 alama)
3. Outline four factors you will consider before proposing a new network topology to the hospital management. (0 alama)
4. Which type of network topology will you suggest to design in order to replace the current network? Give a reason. (0 alama)
5. What are the four communication devices will be required to setup a new network topology? (0 alama)

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The following table shows ages of members and activities available in a Bonanza. Age Activity 51 and over Charting 31 – 50 Swimming 16 – 30 Playing volleyball Less than 15 Dancing Use the information in the table to write a Visual Basic program that accepts the age of a member through a text box. The program should then display the activity on a message box.

1. Implement date validation in Visual Basic for TRC's reservation facility, allowing bookings for the current day or the next 15 days. (3 alama)
2. Write a Visual Basic program that takes a member's age from a text box and displays the corresponding activity in a message box based on the provided age ranges. (7 alama)
3. Form1.Hide (1 alama)

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