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GCE JAN 2010 : A2 1 Information Systems - Revised

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Sp N ec e i w ca tio n Centre Number 71 Candidate Number Assessment Unit A2 1 assessing Module 3: Information Systems [AW211] AW211 Information and Communication Technology *AW211* ADVANCED General Certificate of Education January 2010 WEDNESDAY 27 JANUARY, AFTERNOON TIME 2 hours. INSTRUCTIONS TO CANDIDATES Write your Centre Number and Candidate Number in the spaces provided at the top of this page. Write your answers in the spaces provided in this question paper. Answer all seven questions. INFORMATION FOR CANDIDATES The total mark for this paper is 120 including a maximum of 5 for quality of written communication. Figures in brackets printed down the right-hand side of pages indicate the marks awarded to each question or part question. For Examiner s use only Question Marks Number 1 2 3 4 5 6 7 QWC Total Marks 5918 1 A company uses a Database Management System (DBMS) to process data about its products and customers. Examiner Only Marks Remark (a) Describe the role of the database administrator (DBA) in a typical DBMS. [4] (b) With reference to a relational database, explain what is meant by Data consistency Data integrity [4] 5918 5918 2 [Turn over (c) The company also uses an expert system. Examiner Only Marks Remark Describe three main components of an expert system. 1. ______________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ 2. ______________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ 3. ______________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ _____________________________________________________ [6] 5918 5918 3 [Turn over 2 Businesses must ensure that all their data is secure. Examiner Only Marks Remark (a) Describe two main threats to data security when connected to the Internet. 1. _____________________________________________________ ________________________________________________________ ________________________________________________________ 2. _____________________________________________________ ________________________________________________________ _____________________________________________________ [4] (b) Explain how access rights can be used to improve data security. [4] 5918 5918 4 [Turn over (c) Describe a suitable backup and recovery strategy for a real-time application. Examiner Only Marks Remark _____________________________________________________ [6] (d) Describe the main features of A client server network A peer-to-peer network _____________________________________________________ [4] 5918 5918 5 [Turn over 3 Modern communications rely on ICT. Examiner Only Marks Remark (a) Describe how communication technology is used in A mobile phone network A wireless LAN [8] 5918 5918 6 [Turn over (b) Describe each of the following methods of error detection. Examiner Only Marks Remark Parity bits Check sums Echo checking [9] 5918 5918 7 [Turn over (c) Communication standards are necessary for data transmission. Examiner Only Marks Remark Describe the main features of the OSI model. [6] 5918 5918 8 [Turn over 4 An information system can be developed in a number of different ways. Examiner Only Marks Remark (a) Describe the main features of The waterfall model Rapid application development (RAD) [8] 5918 5918 9 [Turn over (b) Describe each of the following: Examiner Only Marks Remark Alpha testing Beta testing [8] 5918 5918 10 [Turn over 5 GUI and natural language are two types of user interface. Examiner Only Marks Remark (a) Identify the main features of a typical GUI. [4] (b) Describe the main features of a natural language interface. [4] (c) Describe one main drawback of a natural language interface. [2] 5918 5918 11 [Turn over A number of factors should be taken into account when designing a user interface. Examiner Only Marks Remark (d) Describe two psychological factors which can affect human interaction with a computer. 1. _____________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ 2. _____________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ _____________________________________________________ [6] (e) Describe two ergonomic factors which can affect human interaction with a computer. 1. _____________________________________________________ ________________________________________________________ ________________________________________________________ 2. _____________________________________________________ ________________________________________________________ _____________________________________________________ [4] 5918 5918 12 [Turn over 6 Many transactions which required a customer to visit a bank can now be performed at an ATM. Examiner Only Marks Remark (a) Evaluate two other ways in which ICT can be used to avoid the need for a customer to visit a bank. 1. _____________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ 2. _____________________________________________________ ________________________________________________________ ________________________________________________________ ________________________________________________________ _____________________________________________________ [6] (b) Describe two ways in which ICT can be used to train bank employees. 1. _____________________________________________________ ________________________________________________________ ________________________________________________________ 2. _____________________________________________________ ________________________________________________________ _____________________________________________________ [4] 5918 5918 13 [Turn over 7 The use of ICT involves a number of legal and professional issues. Examiner Only Marks Remark (a) Describe the main implications of Data Protection legislation for An organisation Members of the public [6] 5918 5918 14 [Turn over (b) An ICT consultant considers joining the British Computer Society (BCS). Examiner Only Marks Remark Write a short report focusing on The role of the BCS The professional advantages of joining the BCS [8] Quality of Written Communication 5918 5918 15 [Turn over 5918

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Additional Info : Gce ICT January 2010 Assessment Unit A2 1, Module 3: Information Systems - Revised
Tags : General Certificate of Education, A Level and AS Level, uk, council for the curriculum examinations and assessment, gce exam papers, gce a level and as level exam papers , gce past questions and answer, gce past question papers, ccea gce past papers, gce ccea past papers

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