KASNEB DICT LEVEL II TUESDAY: 22 MAY 2018 COMPUTER SUPPORT AND MAINTENANCE Answer all Questions QUESTION ONE (a) Define the following terms as used in computing: Computer support (2 marks) Computer maintenance (2 marks) (b) John Busuti, a technician at Mafunzo College was asked to replace a fault optical drive. Required Outline five components or tools necessary for the task (5 marks) (c) (i) Describe the term "incremental backup" as used in computing. (2 marks) (ii) Highlight three advantages of incremental backup. (3 marks) (d) Joyce Maleki suspects that her desktop computer has overheating problems Required (i) Identify two indicators of an overheating computer. (2 marks) (ii) Suggest four possible causes of overheating in a computer. (4 marks) QUESTION TWO (a...
What is an ICT system? Is a set up consisting of hardware, software, data and the people who use them; includes communication technology such as internet. ICT and computers is not the same. Areas of ICT systems: Offices Shops Medicines Aircraft Factories Communication Types if ICT systems Information systems – managing data and information Control systems – control machines, robots Communication systems –transporting data Impact of ICT in society Faster communication speed Lower communication costs Paperless environment Borderless communication Reliable mode of communication Effective sharing of information Negative effects of ICT Fraud Hacking Pornography Identity theft Health problems A computer may harm users if they use it for long hours frequently. Users are also exposed to bad posture, eyestrain, physical and mental stress. In order to solve health problems, an ergonomic environment can be intro...
SYSTEMS ANALYSIS AND DESIGN – MAY 2017 WEDNESDAY: 24 MAY 2017 Answer ALL questions. Marks allocated to each question are shown at the end of the question QUESTION ONE (a) Enumerate four advantages of object-oriented analysis as compared to structured analysis. (2 marks) (b) Use a well labelled diagram to express the relationship among three sub-phases of the systems analysis phase of a project. (6 marks) (c) System modelling is a major activity in systems design. Assess why modelling activities tend to focus on logical system models. (3 marks) (d) The sales clerk at XYZ Ltd receives a phone call from a customer enquiring on a certain product. The clerk records the description of the item and quantity as well as the name and address of the customer. The items are then checked against the catalog of available items. If the item is not in stock, a reject e-mail is se...
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